Fix C# examples in documentation

- Fix documentation after C# renames.
- Add missing `partial` in C# class declarations.
- Change `delta` parameter type to `double` in C#.
- Ensure parameters match base declaration.
- Use `$` string interpolation in C#.
- Fix invalid or outdated C# code.
- Changed some examples to follow our style guide more closely.

35 files changed, 295 insertions, 278 deletions

diff --git a/doc/classes/AESContext.xml b/doc/classes/AESContext.xml
index 7f582e4be7..747968ea91 100644
--- a/doc/classes/AESContext.xml
+++ b/doc/classes/AESContext.xml
@@ -39,39 +39,38 @@
 		[/gdscript]
 		[csharp]
 		using Godot;
-		using System;
 		using System.Diagnostics;
 
-		public class Example : Node
+		public partial class MyNode : Node
 		{
-		    public AESContext Aes = new AESContext();
+		    private AesContext _aes = new AesContext();
 
 		    public override void _Ready()
 		    {
 		        string key = "My secret key!!!"; // Key must be either 16 or 32 bytes.
 		        string data = "My secret text!!"; // Data size must be multiple of 16 bytes, apply padding if needed.
 		        // Encrypt ECB
-		        Aes.Start(AESContext.Mode.EcbEncrypt, key.ToUTF8());
-		        byte[] encrypted = Aes.Update(data.ToUTF8());
-		        Aes.Finish();
+		        _aes.Start(AesContext.Mode.EcbEncrypt, key.ToUtf8());
+		        byte[] encrypted = _aes.Update(data.ToUtf8());
+		        _aes.Finish();
 		        // Decrypt ECB
-		        Aes.Start(AESContext.Mode.EcbDecrypt, key.ToUTF8());
-		        byte[] decrypted = Aes.Update(encrypted);
-		        Aes.Finish();
+		        _aes.Start(AesContext.Mode.EcbDecrypt, key.ToUtf8());
+		        byte[] decrypted = _aes.Update(encrypted);
+		        _aes.Finish();
 		        // Check ECB
-		        Debug.Assert(decrypted == data.ToUTF8());
+		        Debug.Assert(decrypted == data.ToUtf8());
 
 		        string iv = "My secret iv!!!!"; // IV must be of exactly 16 bytes.
 		        // Encrypt CBC
-		        Aes.Start(AESContext.Mode.EcbEncrypt, key.ToUTF8(), iv.ToUTF8());
-		        encrypted = Aes.Update(data.ToUTF8());
-		        Aes.Finish();
+		        _aes.Start(AesContext.Mode.EcbEncrypt, key.ToUtf8(), iv.ToUtf8());
+		        encrypted = _aes.Update(data.ToUtf8());
+		        _aes.Finish();
 		        // Decrypt CBC
-		        Aes.Start(AESContext.Mode.EcbDecrypt, key.ToUTF8(), iv.ToUTF8());
-		        decrypted = Aes.Update(encrypted);
-		        Aes.Finish();
+		        _aes.Start(AesContext.Mode.EcbDecrypt, key.ToUtf8(), iv.ToUtf8());
+		        decrypted = _aes.Update(encrypted);
+		        _aes.Finish();
 		        // Check CBC
-		        Debug.Assert(decrypted == data.ToUTF8());
+		        Debug.Assert(decrypted == data.ToUtf8());
 		    }
 		}
 		[/csharp]
diff --git a/doc/classes/AStar3D.xml b/doc/classes/AStar3D.xml
index 4e8394195d..f0481c1745 100644
--- a/doc/classes/AStar3D.xml
+++ b/doc/classes/AStar3D.xml
@@ -19,15 +19,16 @@
 		        return min(0, abs(u - v) - 1)
 		[/gdscript]
 		[csharp]
-		public class MyAStar : AStar3D
+		public partial class MyAStar : AStar3D
 		{
-		    public override float _ComputeCost(int u, int v)
+		    public override float _ComputeCost(long fromId, long toId)
 		    {
-		        return Mathf.Abs(u - v);
+		        return Mathf.Abs((int)(fromId - toId));
 		    }
-		    public override float _EstimateCost(int u, int v)
+
+		    public override float _EstimateCost(long fromId, long toId)
 		    {
-		        return Mathf.Min(0, Mathf.Abs(u - v) - 1);
+		        return Mathf.Min(0, Mathf.Abs((int)(fromId - toId)) - 1);
 		    }
 		}
 		[/csharp]
diff --git a/doc/classes/Color.xml b/doc/classes/Color.xml
index 57278d9241..cee0e3ef7d 100644
--- a/doc/classes/Color.xml
+++ b/doc/classes/Color.xml
@@ -233,7 +233,6 @@
 			<description>
 				Returns a new color from [param rgba], an HTML hexadecimal color string. [param rgba] is not case-sensitive, and may be prefixed by a hash sign ([code]#[/code]).
 				[param rgba] must be a valid three-digit or six-digit hexadecimal color string, and may contain an alpha channel value. If [param rgba] does not contain an alpha channel value, an alpha channel value of 1.0 is applied. If [param rgba] is invalid, returns an empty color.
-				[b]Note:[/b] In C#, this method is not implemented. The same functionality is provided by the Color constructor.
 				[codeblocks]
 				[gdscript]
 				var blue = Color.html("#0000ff") # blue is Color(0.0, 0.0, 1.0, 1.0)
@@ -264,13 +263,13 @@
 				Color.html_is_valid("#55aaFF5")  # Returns false
 				[/gdscript]
 				[csharp]
-				Color.IsHtmlValid("#55AAFF");   // Returns true
-				Color.IsHtmlValid("#55AAFF20"); // Returns true
-				Color.IsHtmlValid("55AAFF");    // Returns true
-				Color.IsHtmlValid("#F2C");      // Returns true
+				Color.HtmlIsValid("#55AAFF");   // Returns true
+				Color.HtmlIsValid("#55AAFF20"); // Returns true
+				Color.HtmlIsValid("55AAFF");    // Returns true
+				Color.HtmlIsValid("#F2C");      // Returns true
 
-				Color.IsHtmlValid("#AABBC");    // Returns false
-				Color.IsHtmlValid("#55aaFF5");  // Returns false
+				Color.HtmlIsValid("#AABBC");    // Returns false
+				Color.HtmlIsValid("#55aaFF5");  // Returns false
 				[/csharp]
 				[/codeblocks]
 			</description>
diff --git a/doc/classes/Control.xml b/doc/classes/Control.xml
index 0d675112b8..d74ddba369 100644
--- a/doc/classes/Control.xml
+++ b/doc/classes/Control.xml
@@ -37,11 +37,11 @@
 				    return typeof(data) == TYPE_DICTIONARY and data.has("expected")
 				[/gdscript]
 				[csharp]
-				public override bool CanDropData(Vector2 position, object data)
+				public override bool _CanDropData(Vector2 atPosition, Variant data)
 				{
 				    // Check position if it is relevant to you
 				    // Otherwise, just check data
-				    return data is Godot.Collections.Dictionary &amp;&amp; (data as Godot.Collections.Dictionary).Contains("expected");
+				    return data.VariantType == Variant.Type.Dictionary &amp;&amp; data.AsGodotDictionary().Contains("expected");
 				}
 				[/csharp]
 				[/codeblocks]
@@ -57,17 +57,19 @@
 				[gdscript]
 				func _can_drop_data(position, data):
 				    return typeof(data) == TYPE_DICTIONARY and data.has("color")
+
 				func _drop_data(position, data):
 				    var color = data["color"]
 				[/gdscript]
 				[csharp]
-				public override bool CanDropData(Vector2 position, object data)
+				public override bool _CanDropData(Vector2 atPosition, Variant data)
 				{
-				    return data is Godot.Collections.Dictionary &amp;&amp; (data as Godot.Collections.Dictionary).Contains("color");
+				    return data.VariantType == Variant.Type.Dictionary &amp;&amp; dict.AsGodotDictionary().Contains("color");
 				}
-				public override void DropData(Vector2 position, object data)
+
+				public override void _DropData(Vector2 atPosition, Variant data)
 				{
-				    Color color = (Color)(data as Godot.Collections.Dictionary)["color"];
+				    Color color = data.AsGodotDictionary()["color"].AsColor();
 				}
 				[/csharp]
 				[/codeblocks]
@@ -87,11 +89,11 @@
 				    return mydata
 				[/gdscript]
 				[csharp]
-				public override object GetDragData(Vector2 position)
+				public override Variant _GetDragData(Vector2 atPosition)
 				{
-				    object mydata = MakeData(); // This is your custom method generating the drag data.
-				    SetDragPreview(MakePreview(mydata)); // This is your custom method generating the preview of the drag data.
-				    return mydata;
+				    var myData = MakeData(); // This is your custom method generating the drag data.
+				    SetDragPreview(MakePreview(myData)); // This is your custom method generating the preview of the drag data.
+				    return myData;
 				}
 				[/csharp]
 				[/codeblocks]
@@ -121,10 +123,9 @@
 				[csharp]
 				public override void _GuiInput(InputEvent @event)
 				{
-				    if (@event is InputEventMouseButton)
+				    if (@event is InputEventMouseButton mb)
 				    {
-				        var mb = @event as InputEventMouseButton;
-				        if (mb.ButtonIndex == (int)ButtonList.Left &amp;&amp; mb.Pressed)
+				        if (mb.ButtonIndex == MouseButton.Left &amp;&amp; mb.Pressed)
 				        {
 				            GD.Print("I've been clicked D:");
 				        }
@@ -168,7 +169,7 @@
 				    return label
 				[/gdscript]
 				[csharp]
-				public override Godot.Control _MakeCustomTooltip(String forText)
+				public override Control _MakeCustomTooltip(string forText)
 				{
 				    var label = new Label();
 				    label.Text = forText;
@@ -185,7 +186,7 @@
 				    return tooltip
 				[/gdscript]
 				[csharp]
-				public override Godot.Control _MakeCustomTooltip(String forText)
+				public override Control _MakeCustomTooltip(string forText)
 				{
 				    Node tooltip = ResourceLoader.Load&lt;PackedScene&gt;("res://some_tooltip_scene.tscn").Instantiate();
 				    tooltip.GetNode&lt;Label&gt;("Label").Text = forText;
@@ -229,11 +230,11 @@
 				[/gdscript]
 				[csharp]
 				// Given the child Label node "MyLabel", override its font color with a custom value.
-				GetNode&lt;Label&gt;("MyLabel").AddThemeColorOverride("font_color", new Color(1, 0.5f, 0))
+				GetNode&lt;Label&gt;("MyLabel").AddThemeColorOverride("font_color", new Color(1, 0.5f, 0));
 				// Reset the font color of the child label.
-				GetNode&lt;Label&gt;("MyLabel").RemoveThemeColorOverride("font_color")
+				GetNode&lt;Label&gt;("MyLabel").RemoveThemeColorOverride("font_color");
 				// Alternatively it can be overridden with the default value from the Label type.
-				GetNode&lt;Label&gt;("MyLabel").AddThemeColorOverride("font_color", GetThemeColor("font_color", "Label"))
+				GetNode&lt;Label&gt;("MyLabel").AddThemeColorOverride("font_color", GetThemeColor("font_color", "Label"));
 				[/csharp]
 				[/codeblocks]
 			</description>
@@ -542,12 +543,12 @@
 				[codeblocks]
 				[gdscript]
 				func _process(delta):
-				    grab_click_focus() #when clicking another Control node, this node will be clicked instead
+				    grab_click_focus() # When clicking another Control node, this node will be clicked instead.
 				[/gdscript]
 				[csharp]
-				public override void _Process(float delta)
+				public override void _Process(double delta)
 				{
-				    GrabClickFocus(); //when clicking another Control node, this node will be clicked instead
+				    GrabClickFocus(); // When clicking another Control node, this node will be clicked instead.
 				}
 				[/csharp]
 				[/codeblocks]
@@ -812,16 +813,16 @@
 				[/gdscript]
 				[csharp]
 				[Export]
-				public Color Color = new Color(1, 0, 0, 1);
+				private Color _color = new Color(1, 0, 0, 1);
 
-				public override object GetDragData(Vector2 position)
+				public override Variant _GetDragData(Vector2 atPosition)
 				{
 				    // Use a control that is not in the tree
 				    var cpb = new ColorPickerButton();
-				    cpb.Color = Color;
-				    cpb.RectSize = new Vector2(50, 50);
+				    cpb.Color = _color;
+				    cpb.Size = new Vector2(50, 50);
 				    SetDragPreview(cpb);
-				    return Color;
+				    return _color;
 				}
 				[/csharp]
 				[/codeblocks]
diff --git a/doc/classes/Crypto.xml b/doc/classes/Crypto.xml
index ade63225dc..a7e7e756c6 100644
--- a/doc/classes/Crypto.xml
+++ b/doc/classes/Crypto.xml
@@ -9,9 +9,11 @@
 		[codeblocks]
 		[gdscript]
 		extends Node
+
 		var crypto = Crypto.new()
 		var key = CryptoKey.new()
 		var cert = X509Certificate.new()
+
 		func _ready():
 		    # Generate new RSA key.
 		    key = crypto.generate_rsa(4096)
@@ -35,35 +37,35 @@
 		[/gdscript]
 		[csharp]
 		using Godot;
-		using System;
 		using System.Diagnostics;
 
-		public class CryptoNode : Node
+		public partial class MyNode : Node
 		{
-		    public Crypto Crypto = new Crypto();
-		    public CryptoKey Key = new CryptoKey();
-		    public X509Certificate Cert = new X509Certificate();
+		    private Crypto _crypto = new Crypto();
+		    private CryptoKey _key = new CryptoKey();
+		    private X509Certificate _cert = new X509Certificate();
+
 		    public override void _Ready()
 		    {
 		        // Generate new RSA key.
-		        Key = Crypto.GenerateRsa(4096);
+		        _key = _crypto.GenerateRsa(4096);
 		        // Generate new self-signed certificate with the given key.
-		        Cert = Crypto.GenerateSelfSignedCertificate(Key, "CN=mydomain.com,O=My Game Company,C=IT");
+		        _cert = _crypto.GenerateSelfSignedCertificate(_key, "CN=mydomain.com,O=My Game Company,C=IT");
 		        // Save key and certificate in the user folder.
-		        Key.Save("user://generated.key");
-		        Cert.Save("user://generated.crt");
+		        _key.Save("user://generated.key");
+		        _cert.Save("user://generated.crt");
 		        // Encryption
 		        string data = "Some data";
-		        byte[] encrypted = Crypto.Encrypt(Key, data.ToUTF8());
+		        byte[] encrypted = _crypto.Encrypt(_key, data.ToUtf8());
 		        // Decryption
-		        byte[] decrypted = Crypto.Decrypt(Key, encrypted);
+		        byte[] decrypted = _crypto.Decrypt(_key, encrypted);
 		        // Signing
-		        byte[] signature = Crypto.Sign(HashingContext.HashType.Sha256, Data.SHA256Buffer(), Key);
+		        byte[] signature = _crypto.Sign(HashingContext.HashType.Sha256, Data.Sha256Buffer(), _key);
 		        // Verifying
-		        bool verified = Crypto.Verify(HashingContext.HashType.Sha256, Data.SHA256Buffer(), signature, Key);
+		        bool verified = _crypto.Verify(HashingContext.HashType.Sha256, Data.Sha256Buffer(), signature, _key);
 		        // Checks
 		        Debug.Assert(verified);
-		        Debug.Assert(data.ToUTF8() == decrypted);
+		        Debug.Assert(data.ToUtf8() == decrypted);
 		    }
 		}
 		[/csharp]
diff --git a/doc/classes/DTLSServer.xml b/doc/classes/DTLSServer.xml
index a3a0b0456c..ae1ba10ec7 100644
--- a/doc/classes/DTLSServer.xml
+++ b/doc/classes/DTLSServer.xml
@@ -38,45 +38,46 @@
 		                p.put_packet("Hello DTLS client".to_utf8())
 		[/gdscript]
 		[csharp]
-		using Godot;
-		using System;
 		// ServerNode.cs
-		public class ServerNode : Node
+		using Godot;
+
+		public partial class ServerNode : Node
 		{
-		    public DTLSServer Dtls = new DTLSServer();
-		    public UDPServer Server = new UDPServer();
-		    public Godot.Collections.Array&lt;PacketPeerDTLS&gt; Peers = new Godot.Collections.Array&lt;PacketPeerDTLS&gt;();
+		    private DtlsServer _dtls = new DtlsServer();
+		    private UdpServer _server = new UdpServer();
+		    private Godot.Collections.Array&lt;PacketPeerDTLS&gt; _peers = new Godot.Collections.Array&lt;PacketPeerDTLS&gt;();
+
 		    public override void _Ready()
 		    {
-		        Server.Listen(4242);
+		        _server.Listen(4242);
 		        var key = GD.Load&lt;CryptoKey&gt;("key.key"); // Your private key.
 		        var cert = GD.Load&lt;X509Certificate&gt;("cert.crt"); // Your X509 certificate.
-		        Dtls.Setup(key, cert);
+		        _dtls.Setup(key, cert);
 		    }
 
-		    public override void _Process(float delta)
+		    public override void _Process(double delta)
 		    {
 		        while (Server.IsConnectionAvailable())
 		        {
-		            PacketPeerUDP peer = Server.TakeConnection();
-		            PacketPeerDTLS dtlsPeer = Dtls.TakeConnection(peer);
-		            if (dtlsPeer.GetStatus() != PacketPeerDTLS.Status.Handshaking)
+		            PacketPeerUDP peer = _server.TakeConnection();
+		            PacketPeerDTLS dtlsPeer = _dtls.TakeConnection(peer);
+		            if (dtlsPeer.GetStatus() != PacketPeerDtls.Status.Handshaking)
 		            {
 		                continue; // It is normal that 50% of the connections fails due to cookie exchange.
 		            }
 		            GD.Print("Peer connected!");
-		            Peers.Add(dtlsPeer);
+		            _peers.Add(dtlsPeer);
 		        }
 
-		        foreach (var p in Peers)
+		        foreach (var p in _peers)
 		        {
 		            p.Poll(); // Must poll to update the state.
-		            if (p.GetStatus() == PacketPeerDTLS.Status.Connected)
+		            if (p.GetStatus() == PacketPeerDtls.Status.Connected)
 		            {
 		                while (p.GetAvailablePacketCount() &gt; 0)
 		                {
-		                    GD.Print("Received Message From Client: " + p.GetPacket().GetStringFromUTF8());
-		                    p.PutPacket("Hello Dtls Client".ToUTF8());
+		                    GD.Print($"Received Message From Client: {p.GetPacket().GetStringFromUtf8()}");
+		                    p.PutPacket("Hello DTLS Client".ToUtf8());
 		                }
 		            }
 		        }
@@ -108,34 +109,36 @@
 		            connected = true
 		[/gdscript]
 		[csharp]
+		// ClientNode.cs
 		using Godot;
 		using System.Text;
-		// ClientNode.cs
-		public class ClientNode : Node
+
+		public partial class ClientNode : Node
 		{
-		    public PacketPeerDTLS Dtls = new PacketPeerDTLS();
-		    public PacketPeerUDP Udp = new PacketPeerUDP();
-		    public bool Connected = false;
+		    private PacketPeerDtls _dtls = new PacketPeerDtls();
+		    private PacketPeerUdp _udp = new PacketPeerUdp();
+		    private bool _connected = false;
+
 		    public override void _Ready()
 		    {
-		        Udp.ConnectToHost("127.0.0.1", 4242);
-		        Dtls.ConnectToPeer(Udp, false); // Use true in production for certificate validation!
+		        _udp.ConnectToHost("127.0.0.1", 4242);
+		        _dtls.ConnectToPeer(_udp, validateCerts: false); // Use true in production for certificate validation!
 		    }
 
-		    public override void _Process(float delta)
+		    public override void _Process(double delta)
 		    {
-		        Dtls.Poll();
-		        if (Dtls.GetStatus() == PacketPeerDTLS.Status.Connected)
+		        _dtls.Poll();
+		        if (_dtls.GetStatus() == PacketPeerDtls.Status.Connected)
 		        {
-		            if (!Connected)
+		            if (!_connected)
 		            {
 		                // Try to contact server
-		                Dtls.PutPacket("The Answer Is..42!".ToUTF8());
+		                _dtls.PutPacket("The Answer Is..42!".ToUtf8());
 		            }
-		            while (Dtls.GetAvailablePacketCount() &gt; 0)
+		            while (_dtls.GetAvailablePacketCount() &gt; 0)
 		            {
-		                GD.Print("Connected: " + Dtls.GetPacket().GetStringFromUTF8());
-		                Connected = true;
+		                GD.Print($"Connected: {_dtls.GetPacket().GetStringFromUtf8()}");
+		                _connected = true;
 		            }
 		        }
 		    }
diff --git a/doc/classes/Dictionary.xml b/doc/classes/Dictionary.xml
index 1591aa59bf..a5a50b4c6a 100644
--- a/doc/classes/Dictionary.xml
+++ b/doc/classes/Dictionary.xml
@@ -51,7 +51,7 @@
 		[csharp]
 		[Export(PropertyHint.Enum, "White,Yellow,Orange")]
 		public string MyColor { get; set; }
-		public Godot.Collections.Dictionary pointsDict = new Godot.Collections.Dictionary
+		private Godot.Collections.Dictionary _pointsDict = new Godot.Collections.Dictionary
 		{
 		    {"White", 50},
 		    {"Yellow", 75},
@@ -60,7 +60,7 @@
 
 		public override void _Ready()
 		{
-		    int points = (int)pointsDict[MyColor];
+		    int points = (int)_pointsDict[MyColor];
 		}
 		[/csharp]
 		[/codeblocks]
diff --git a/doc/classes/DirAccess.xml b/doc/classes/DirAccess.xml
index 181d2eb485..27f2eb7f2f 100644
--- a/doc/classes/DirAccess.xml
+++ b/doc/classes/DirAccess.xml
@@ -44,11 +44,11 @@
 		        {
 		            if (dir.CurrentIsDir())
 		            {
-		                GD.Print("Found directory: " + fileName);
+		                GD.Print($"Found directory: {fileName}");
 		            }
 		            else
 		            {
-		                GD.Print("Found file: " + fileName);
+		                GD.Print($"Found file: {fileName}");
 		            }
 		            fileName = dir.GetNext();
 		        }
diff --git a/doc/classes/EditorImportPlugin.xml b/doc/classes/EditorImportPlugin.xml
index ec9efcc9c4..b30ce5a528 100644
--- a/doc/classes/EditorImportPlugin.xml
+++ b/doc/classes/EditorImportPlugin.xml
@@ -48,61 +48,67 @@
 		[/gdscript]
 		[csharp]
 		using Godot;
-		using System;
 
-		public class MySpecialPlugin : EditorImportPlugin
+		public partial class MySpecialPlugin : EditorImportPlugin
 		{
-		    public override String GetImporterName()
+		    public override string _GetImporterName()
 		    {
 		        return "my.special.plugin";
 		    }
 
-		    public override String GetVisibleName()
+		    public override string _GetVisibleName()
 		    {
 		        return "Special Mesh";
 		    }
 
-		    public override Godot.Collections.Array GetRecognizedExtensions()
+		    public override string[] _GetRecognizedExtensions()
 		    {
-		        return new Godot.Collections.Array{"special", "spec"};
+		        return new string[] { "special", "spec" };
 		    }
 
-		    public override String GetSaveExtension()
+		    public override string _GetSaveExtension()
 		    {
 		        return "mesh";
 		    }
 
-		    public override String GetResourceType()
+		    public override string _GetResourceType()
 		    {
 		        return "Mesh";
 		    }
 
-		    public override int GetPresetCount()
+		    public override int _GetPresetCount()
 		    {
 		        return 1;
 		    }
 
-		    public override String GetPresetName(int i)
+		    public override string _GetPresetName(int presetIndex)
 		    {
 		        return "Default";
 		    }
 
-		    public override Godot.Collections.Array GetImportOptions(int i)
+		    public override Godot.Collections.Array&lt;Godot.Collections.Dictionary&gt; _GetImportOptions(string path, int presetIndex)
 		    {
-		        return new Godot.Collections.Array{new Godot.Collections.Dictionary{{"name", "myOption"}, {"defaultValue", false}}};
+		        return new Godot.Collections.Array&lt;Godot.Collections.Dictionary&gt;
+		        {
+		            new Godot.Collections.Dictionary
+		            {
+		                { "name", "myOption" },
+		                { "defaultValue", false },
+		            }
+		        };
 		    }
 
-		    public override int Import(String sourceFile, String savePath, Godot.Collections.Dictionary options, Godot.Collections.Array platformVariants, Godot.Collections.Array genFiles)
+		    public override int _Import(string sourceFile, string savePath, Godot.Collections.Dictionary options, Godot.Collections.Array&lt;string&gt; platformVariants, Godot.Collections.Array&lt;string&gt; genFiles)
 		    {
-		        var file = new File();
-		        if (file.Open(sourceFile, File.ModeFlags.Read) != Error.Ok)
+		        using var file = FileAccess.Open(sourceFile, FileAccess.ModeFlags.Read);
+		        if (file.GetError() != Error.Ok)
 		        {
 		            return (int)Error.Failed;
 		        }
 
 		        var mesh = new ArrayMesh();
 		        // Fill the Mesh with data read in "file", left as an exercise to the reader.
-		        String filename = savePath + "." + GetSaveExtension();
+		        string filename = $"{savePath}.{_GetSaveExtension()}";
 		        return (int)ResourceSaver.Save(mesh, filename);
 		    }
 		}
diff --git a/doc/classes/EditorPlugin.xml b/doc/classes/EditorPlugin.xml
index c097c8f685..f4b912de9e 100644
--- a/doc/classes/EditorPlugin.xml
+++ b/doc/classes/EditorPlugin.xml
@@ -69,21 +69,22 @@
 				    return EditorPlugin.AFTER_GUI_INPUT_PASS
 				[/gdscript]
 				[csharp]
-				public override void _Forward3dDrawOverViewport(Godot.Control overlay)
+				public override void _Forward3DDrawOverViewport(Control viewportControl)
 				{
 				    // Draw a circle at cursor position.
-				    overlay.DrawCircle(overlay.GetLocalMousePosition(), 64, Colors.White);
+				    viewportControl.DrawCircle(viewportControl.GetLocalMousePosition(), 64, Colors.White);
 				}
 
-				public override EditorPlugin.AfterGUIInput _Forward3dGuiInput(Godot.Camera3D camera, InputEvent @event)
+				public override EditorPlugin.AfterGuiInput _Forward3DGuiInput(Camera3D viewportCamera, InputEvent @event)
 				{
 				    if (@event is InputEventMouseMotion)
 				    {
 				        // Redraw viewport when cursor is moved.
 				        UpdateOverlays();
-				        return EditorPlugin.AFTER_GUI_INPUT_STOP;
+				        return EditorPlugin.AfterGuiInput.Stop;
 				    }
-				    return EditorPlugin.AFTER_GUI_INPUT_PASS;
+				    return EditorPlugin.AfterGuiInput.Pass;
+				}
 				[/csharp]
 				[/codeblocks]
 			</description>
@@ -111,9 +112,9 @@
 				[/gdscript]
 				[csharp]
 				// Prevents the InputEvent from reaching other Editor classes.
-				public override EditorPlugin.AfterGUIInput _Forward3dGuiInput(Camera3D camera, InputEvent @event)
+				public override EditorPlugin.AfterGuiInput _Forward3DGuiInput(Camera3D camera, InputEvent @event)
 				{
-				    return EditorPlugin.AFTER_GUI_INPUT_STOP;
+				    return EditorPlugin.AfterGuiInput.Stop;
 				}
 				[/csharp]
 				[/codeblocks]
@@ -127,9 +128,9 @@
 				[/gdscript]
 				[csharp]
 				// Consumes InputEventMouseMotion and forwards other InputEvent types.
-				public override EditorPlugin.AfterGUIInput _Forward3dGuiInput(Camera3D camera, InputEvent @event)
+				public override EditorPlugin.AfterGuiInput _Forward3DGuiInput(Camera3D camera, InputEvent @event)
 				{
-				    return @event is InputEventMouseMotion ? EditorPlugin.AFTER_GUI_INPUT_STOP : EditorPlugin.AFTER_GUI_INPUT_PASS;
+				    return @event is InputEventMouseMotion ? EditorPlugin.AfterGuiInput.Stop : EditorPlugin.AfterGuiInput.Pass;
 				}
 				[/csharp]
 				[/codeblocks]
@@ -154,13 +155,13 @@
 				    return false
 				[/gdscript]
 				[csharp]
-				public override void ForwardCanvasDrawOverViewport(Godot.Control overlay)
+				public override void _ForwardCanvasDrawOverViewport(Control viewportControl)
 				{
 				    // Draw a circle at cursor position.
-				    overlay.DrawCircle(overlay.GetLocalMousePosition(), 64, Colors.White);
+				    viewportControl.DrawCircle(viewportControl.GetLocalMousePosition(), 64, Colors.White);
 				}
 
-				public override bool ForwardCanvasGuiInput(InputEvent @event)
+				public override bool _ForwardCanvasGuiInput(InputEvent @event)
 				{
 				    if (@event is InputEventMouseMotion)
 				    {
@@ -169,6 +170,7 @@
 				        return true;
 				    }
 				    return false;
+				}
 				[/csharp]
 				[/codeblocks]
 			</description>
@@ -213,12 +215,13 @@
 				[/gdscript]
 				[csharp]
 				// Consumes InputEventMouseMotion and forwards other InputEvent types.
-				public override bool ForwardCanvasGuiInput(InputEvent @event)
+				public override bool _ForwardCanvasGuiInput(InputEvent @event)
 				{
-				    if (@event is InputEventMouseMotion) {
+				    if (@event is InputEventMouseMotion)
+				    {
 				        return true;
 				    }
-				    return false
+				    return false;
 				}
 				[/csharp]
 				[/codeblocks]
@@ -245,7 +248,7 @@
 				    return get_editor_interface().get_base_control().get_theme_icon("Node", "EditorIcons")
 				[/gdscript]
 				[csharp]
-				public override Texture2D GetPluginIcon()
+				public override Texture2D _GetPluginIcon()
 				{
 				    // You can use a custom icon:
 				    return ResourceLoader.Load&lt;Texture2D&gt;("res://addons/my_plugin/my_plugin_icon.svg");
diff --git a/doc/classes/EditorScenePostImport.xml b/doc/classes/EditorScenePostImport.xml
index d2ad8d1bed..44bc72ea49 100644
--- a/doc/classes/EditorScenePostImport.xml
+++ b/doc/classes/EditorScenePostImport.xml
@@ -10,12 +10,14 @@
 		[gdscript]
 		@tool # Needed so it runs in editor.
 		extends EditorScenePostImport
+
 		# This sample changes all node names.
 		# Called right after the scene is imported and gets the root node.
 		func _post_import(scene):
 		    # Change all node names to "modified_[oldnodename]"
 		    iterate(scene)
 		    return scene # Remember to return the imported scene
+
 		func iterate(node):
 		    if node != null:
 		        node.name = "modified_" + node.name
@@ -30,17 +32,18 @@
 		[Tool]
 		public partial class NodeRenamer : EditorScenePostImport
 		{
-		    public override Object _PostImport(Node scene)
+		    public override GodotObject _PostImport(Node scene)
 		    {
 		        // Change all node names to "modified_[oldnodename]"
 		        Iterate(scene);
 		        return scene; // Remember to return the imported scene
 		    }
+
 		    public void Iterate(Node node)
 		    {
 		        if (node != null)
 		        {
-		            node.Name = "modified_" + node.Name;
+		            node.Name = $"modified_{node.Name}";
 		            foreach (Node child in node.GetChildren())
 		            {
 		                Iterate(child);
diff --git a/doc/classes/EditorScript.xml b/doc/classes/EditorScript.xml
index a02fd215d8..33d2f40d0b 100644
--- a/doc/classes/EditorScript.xml
+++ b/doc/classes/EditorScript.xml
@@ -17,10 +17,9 @@
 		[/gdscript]
 		[csharp]
 		using Godot;
-		using System;
 
 		[Tool]
-		public class HelloEditor : EditorScript
+		public partial class HelloEditor : EditorScript
 		{
 		    public override void _Run()
 		    {
diff --git a/doc/classes/EditorSettings.xml b/doc/classes/EditorSettings.xml
index 72843eb157..1bf8cbf175 100644
--- a/doc/classes/EditorSettings.xml
+++ b/doc/classes/EditorSettings.xml
@@ -22,7 +22,7 @@
 		settings.SetSetting("some/property", Value);
 		// `settings.get("some/property", value)` also works as this class overrides `_get()` internally.
 		settings.GetSetting("some/property");
-		Godot.Collections.Array listOfSettings = settings.GetPropertyList();
+		Godot.Collections.Array&lt;Godot.Collections.Dictionary&gt; listOfSettings = settings.GetPropertyList();
 		[/csharp]
 		[/codeblocks]
 		[b]Note:[/b] This class shouldn't be instantiated directly. Instead, access the singleton using [method EditorInterface.get_editor_settings].
diff --git a/doc/classes/EditorTranslationParserPlugin.xml b/doc/classes/EditorTranslationParserPlugin.xml
index 89746363d8..40b469de0a 100644
--- a/doc/classes/EditorTranslationParserPlugin.xml
+++ b/doc/classes/EditorTranslationParserPlugin.xml
@@ -27,27 +27,25 @@
 		[/gdscript]
 		[csharp]
 		using Godot;
-		using System;
 
 		[Tool]
-		public class CustomParser : EditorTranslationParserPlugin
+		public partial class CustomParser : EditorTranslationParserPlugin
 		{
-		    public override void ParseFile(string path, Godot.Collections.Array msgids, Godot.Collections.Array msgidsContextPlural)
+		    public override void _ParseFile(string path, Godot.Collections.Array&lt;string&gt; msgids, Godot.Collections.Array&lt;Godot.Collections.Array&gt; msgidsContextPlural)
 		    {
-		        var file = new File();
-		        file.Open(path, File.ModeFlags.Read);
+		        using var file = FileAccess.Open(path, FileAccess.ModeFlags.Read);
 		        string text = file.GetAsText();
-		        string[] splitStrs = text.Split(",", false);
-		        foreach (var s in splitStrs)
+		        string[] splitStrs = text.Split(",", allowEmpty: false);
+		        foreach (string s in splitStrs)
 		        {
 		            msgids.Add(s);
-		            //GD.Print("Extracted string: " + s)
+		            //GD.Print($"Extracted string: {s}");
 		        }
 		    }
 
-		    public override Godot.Collections.Array GetRecognizedExtensions()
+		    public override string[] _GetRecognizedExtensions()
 		    {
-		        return new Godot.Collections.Array{"csv"};
+		        return new string[] { "csv" };
 		    }
 		}
 		[/csharp]
@@ -84,16 +82,16 @@
 		    return ["gd"]
 		[/gdscript]
 		[csharp]
-		public override void ParseFile(string path, Godot.Collections.Array msgids, Godot.Collections.Array msgidsContextPlural)
+		public override void _ParseFile(string path, Godot.Collections.Array&lt;string&gt; msgids, Godot.Collections.Array&lt;Godot.Collections.Array&gt; msgidsContextPlural)
 		{
 		    var res = ResourceLoader.Load&lt;Script&gt;(path, "Script");
 		    string text = res.SourceCode;
 		    // Parsing logic.
 		}
 
-		public override Godot.Collections.Array GetRecognizedExtensions()
+		public override string[] _GetRecognizedExtensions()
 		{
-		    return new Godot.Collections.Array{"gd"};
+		    return new string[] { "gd" };
 		}
 		[/csharp]
 		[/codeblocks]
diff --git a/doc/classes/Expression.xml b/doc/classes/Expression.xml
index 2c7d83a811..fd5a921836 100644
--- a/doc/classes/Expression.xml
+++ b/doc/classes/Expression.xml
@@ -24,7 +24,7 @@
 		        $LineEdit.text = str(result)
 		[/gdscript]
 		[csharp]
-		public Expression expression = new Expression();
+		private Expression _expression = new Expression();
 
 		public override void _Ready()
 		{
@@ -33,14 +33,14 @@
 
 		private void OnTextEntered(string command)
 		{
-		    Error error = expression.Parse(command);
+		    Error error = _expression.Parse(command);
 		    if (error != Error.Ok)
 		    {
-		        GD.Print(expression.GetErrorText());
+		        GD.Print(_expression.GetErrorText());
 		        return;
 		    }
-		    object result = expression.Execute();
-		    if (!expression.HasExecuteFailed())
+		    Variant result = _expression.Execute();
+		    if (!_expression.HasExecuteFailed())
 		    {
 		        GetNode&lt;LineEdit&gt;("LineEdit").Text = result.ToString();
 		    }
diff --git a/doc/classes/FileAccess.xml b/doc/classes/FileAccess.xml
index be0c8fd6ca..687a64b8ff 100644
--- a/doc/classes/FileAccess.xml
+++ b/doc/classes/FileAccess.xml
@@ -348,8 +348,8 @@
 				    f.Seek(0); // Go back to start to read the stored value.
 				    ushort read1 = f.Get16(); // 65494
 				    ushort read2 = f.Get16(); // 121
-				    short converted1 = BitConverter.ToInt16(BitConverter.GetBytes(read1), 0); // -42
-				    short converted2 = BitConverter.ToInt16(BitConverter.GetBytes(read2), 0); // 121
+				    short converted1 = (short)read1; // -42
+				    short converted2 = (short)read2; // 121
 				}
 				[/csharp]
 				[/codeblocks]
diff --git a/doc/classes/Geometry2D.xml b/doc/classes/Geometry2D.xml
index 0142018f1a..f015026bc1 100644
--- a/doc/classes/Geometry2D.xml
+++ b/doc/classes/Geometry2D.xml
@@ -160,14 +160,13 @@
 				var polygon = PackedVector2Array([Vector2(0, 0), Vector2(100, 0), Vector2(100, 100), Vector2(0, 100)])
 				var offset = Vector2(50, 50)
 				polygon = Transform2D(0, offset) * polygon
-				print(polygon) # prints [Vector2(50, 50), Vector2(150, 50), Vector2(150, 150), Vector2(50, 150)]
+				print(polygon) # prints [(50, 50), (150, 50), (150, 150), (50, 150)]
 				[/gdscript]
 				[csharp]
 				var polygon = new Vector2[] { new Vector2(0, 0), new Vector2(100, 0), new Vector2(100, 100), new Vector2(0, 100) };
 				var offset = new Vector2(50, 50);
-				// TODO: This code is not valid right now. Ping @aaronfranke about it before Godot 4.0 is out.
-				//polygon = (Vector2[]) new Transform2D(0, offset).Xform(polygon);
-				//GD.Print(polygon); // prints [Vector2(50, 50), Vector2(150, 50), Vector2(150, 150), Vector2(50, 150)]
+				polygon = new Transform2D(0, offset) * polygon;
+				GD.Print((Variant)polygon); // prints [(50, 50), (150, 50), (150, 150), (50, 150)]
 				[/csharp]
 				[/codeblocks]
 			</description>
diff --git a/doc/classes/GraphEdit.xml b/doc/classes/GraphEdit.xml
index ea4e4b53ba..490637374d 100644
--- a/doc/classes/GraphEdit.xml
+++ b/doc/classes/GraphEdit.xml
@@ -72,8 +72,9 @@
 				    return from != to
 				[/gdscript]
 				[csharp]
-				public override bool _IsNodeHoverValid(String from, int fromSlot, String to, int toSlot) {
-				    return from != to;
+				public override bool _IsNodeHoverValid(StringName fromNode, int fromPort, StringName toNode, int toPort)
+				{
+				    return fromNode != toNode;
 				}
 				[/csharp]
 				[/codeblocks]
diff --git a/doc/classes/HMACContext.xml b/doc/classes/HMACContext.xml
index 706ee30963..fbdc6b5e64 100644
--- a/doc/classes/HMACContext.xml
+++ b/doc/classes/HMACContext.xml
@@ -26,25 +26,24 @@
 		[/gdscript]
 		[csharp]
 		using Godot;
-		using System;
 		using System.Diagnostics;
 
-		public class CryptoNode : Node
+		public partial class MyNode : Node
 		{
-		    private HMACContext ctx = new HMACContext();
+		    private HmacContext _ctx = new HmacContext();
 
 		    public override void _Ready()
 		    {
-		        byte[] key = "supersecret".ToUTF8();
-		        Error err = ctx.Start(HashingContext.HashType.Sha256, key);
+		        byte[] key = "supersecret".ToUtf8();
+		        Error err = _ctx.Start(HashingContext.HashType.Sha256, key);
 		        Debug.Assert(err == Error.Ok);
-		        byte[] msg1 = "this is ".ToUTF8();
-		        byte[] msg2 = "super duper secret".ToUTF8();
-		        err = ctx.Update(msg1);
+		        byte[] msg1 = "this is ".ToUtf8();
+		        byte[] msg2 = "super duper secret".ToUtf8();
+		        err = _ctx.Update(msg1);
 		        Debug.Assert(err == Error.Ok);
-		        err = ctx.Update(msg2);
+		        err = _ctx.Update(msg2);
 		        Debug.Assert(err == Error.Ok);
-		        byte[] hmac = ctx.Finish();
+		        byte[] hmac = _ctx.Finish();
 		        GD.Print(hmac.HexEncode());
 		    }
 		}
diff --git a/doc/classes/HTTPClient.xml b/doc/classes/HTTPClient.xml
index b7a5cff694..4973f3fddf 100644
--- a/doc/classes/HTTPClient.xml
+++ b/doc/classes/HTTPClient.xml
@@ -105,7 +105,7 @@
 				[/gdscript]
 				[csharp]
 				var fields = new Godot.Collections.Dictionary { { "username", "user" }, { "password", "pass" } };
-				string queryString = new HTTPClient().QueryStringFromDict(fields);
+				string queryString = httpClient.QueryStringFromDict(fields);
 				// Returns "username=user&amp;password=pass"
 				[/csharp]
 				[/codeblocks]
@@ -117,8 +117,13 @@
 				# Returns "single=123&amp;not_valued&amp;multiple=22&amp;multiple=33&amp;multiple=44"
 				[/gdscript]
 				[csharp]
-				var fields = new Godot.Collections.Dictionary{{"single", 123}, {"notValued", null}, {"multiple", new Godot.Collections.Array{22, 33, 44}}};
-				string queryString = new HTTPClient().QueryStringFromDict(fields);
+				var fields = new Godot.Collections.Dictionary
+				{
+				    { "single", 123 },
+				    { "notValued", default },
+				    { "multiple", new Godot.Collections.Array { 22, 33, 44 } },
+				};
+				string queryString = httpClient.QueryStringFromDict(fields);
 				// Returns "single=123&amp;not_valued&amp;multiple=22&amp;multiple=33&amp;multiple=44"
 				[/csharp]
 				[/codeblocks]
@@ -151,7 +156,7 @@
 				[csharp]
 				var fields = new Godot.Collections.Dictionary { { "username", "user" }, { "password", "pass" } };
 				string queryString = new HTTPClient().QueryStringFromDict(fields);
-				string[] headers = {"Content-Type: application/x-www-form-urlencoded", "Content-Length: " + queryString.Length};
+				string[] headers = { "Content-Type: application/x-www-form-urlencoded", $"Content-Length: {queryString.Length}" };
 				var result = new HTTPClient().Request(HTTPClient.Method.Post, "index.php", headers, queryString);
 				[/csharp]
 				[/codeblocks]
diff --git a/doc/classes/HTTPRequest.xml b/doc/classes/HTTPRequest.xml
index d403acf90c..5a0b12e198 100644
--- a/doc/classes/HTTPRequest.xml
+++ b/doc/classes/HTTPRequest.xml
@@ -57,7 +57,7 @@
 		    // Perform a POST request. The URL below returns JSON as of writing.
 		    // Note: Don't make simultaneous requests using a single HTTPRequest node.
 		    // The snippet below is provided for reference only.
-		    string body = new JSON().Stringify(new Godot.Collections.Dictionary
+		    string body = new Json().Stringify(new Godot.Collections.Dictionary
 		    {
 		        { "name", "Godette" }
 		    });
@@ -69,14 +69,14 @@
 		}
 
 		// Called when the HTTP request is completed.
-		private void HttpRequestCompleted(int result, int responseCode, string[] headers, byte[] body)
+		private void HttpRequestCompleted(long result, long responseCode, string[] headers, byte[] body)
 		{
-		    var json = new JSON();
-		    json.Parse(body.GetStringFromUTF8());
-		    var response = json.GetData() as Godot.Collections.Dictionary;
+		    var json = new Json();
+		    json.Parse(body.GetStringFromUtf8());
+		    var response = json.GetData().AsGodotDictionary();
 
 		    // Will print the user agent string used by the HTTPRequest node (as recognized by httpbin.org).
-		    GD.Print((response["headers"] as Godot.Collections.Dictionary)["User-Agent"]);
+		    GD.Print((response["headers"].AsGodotDictionary())["User-Agent"]);
 		}
 		[/csharp]
 		[/codeblocks]
@@ -128,9 +128,9 @@
 		}
 
 		// Called when the HTTP request is completed.
-		private void HttpRequestCompleted(int result, int responseCode, string[] headers, byte[] body)
+		private void HttpRequestCompleted(long result, long responseCode, string[] headers, byte[] body)
 		{
-		    if (result != (int)HTTPRequest.Result.Success)
+		    if (result != (long)HTTPRequest.Result.Success)
 		    {
 		        GD.PushError("Image couldn't be downloaded. Try a different image.");
 		    }
diff --git a/doc/classes/HashingContext.xml b/doc/classes/HashingContext.xml
index 7c2be6f817..5223cbf52f 100644
--- a/doc/classes/HashingContext.xml
+++ b/doc/classes/HashingContext.xml
@@ -8,7 +8,7 @@
 		The [enum HashType] enum shows the supported hashing algorithms.
 		[codeblocks]
 		[gdscript]
-		const CHUNK_SIZE = 102
+		const CHUNK_SIZE = 1024
 
 		func hash_file(path):
 		    # Check that file exists.
@@ -32,17 +32,16 @@
 
 		public void HashFile(string path)
 		{
-		    var ctx = new HashingContext();
-		    var file = new File();
-		    // Start a SHA-256 context.
-		    ctx.Start(HashingContext.HashType.Sha256);
 		    // Check that file exists.
-		    if (!file.FileExists(path))
+		    if (!FileAccess.FileExists(path))
 		    {
 		        return;
 		    }
+		    // Start a SHA-256 context.
+		    var ctx = new HashingContext();
+		    ctx.Start(HashingContext.HashType.Sha256);
 		    // Open the file to hash.
-		    file.Open(path, File.ModeFlags.Read);
+		    using var file = FileAccess.Open(path, FileAccess.ModeFlags.Read);
 		    // Update the context after reading each chunk.
 		    while (!file.EofReached())
 		    {
@@ -51,8 +50,7 @@
 		    // Get the computed hash.
 		    byte[] res = ctx.Finish();
 		    // Print the result as hex string and array.
-
-		    GD.PrintT(res.HexEncode(), res);
+		    GD.PrintT(res.HexEncode(), (Variant)res);
 		}
 		[/csharp]
 		[/codeblocks]
diff --git a/doc/classes/InputEventMIDI.xml b/doc/classes/InputEventMIDI.xml
index 67e7ced2e8..e4ba380741 100644
--- a/doc/classes/InputEventMIDI.xml
+++ b/doc/classes/InputEventMIDI.xml
@@ -35,9 +35,9 @@
 		    GD.Print(OS.GetConnectedMidiInputs());
 		}
 
-		public override void _Input(InputEvent inputEvent)
+		public override void _Input(InputEvent @event)
 		{
-		    if (inputEvent is InputEventMIDI midiEvent)
+		    if (@event is InputEventMIDI midiEvent)
 		    {
 		        PrintMIDIInfo(midiEvent);
 		    }
@@ -46,14 +46,14 @@
 		private void PrintMIDIInfo(InputEventMIDI midiEvent)
 		{
 		    GD.Print(midiEvent);
-		    GD.Print("Channel " + midiEvent.Channel);
-		    GD.Print("Message " + midiEvent.Message);
-		    GD.Print("Pitch " + midiEvent.Pitch);
-		    GD.Print("Velocity " + midiEvent.Velocity);
-		    GD.Print("Instrument " + midiEvent.Instrument);
-		    GD.Print("Pressure " + midiEvent.Pressure);
-		    GD.Print("Controller number: " + midiEvent.ControllerNumber);
-		    GD.Print("Controller value: " + midiEvent.ControllerValue);
+		    GD.Print($"Channel {midiEvent.Channel}");
+		    GD.Print($"Message {midiEvent.Message}");
+		    GD.Print($"Pitch {midiEvent.Pitch}");
+		    GD.Print($"Velocity {midiEvent.Velocity}");
+		    GD.Print($"Instrument {midiEvent.Instrument}");
+		    GD.Print($"Pressure {midiEvent.Pressure}");
+		    GD.Print($"Controller number: {midiEvent.ControllerNumber}");
+		    GD.Print($"Controller value: {midiEvent.ControllerValue}");
 		}
 		[/csharp]
 		[/codeblocks]
diff --git a/doc/classes/MainLoop.xml b/doc/classes/MainLoop.xml
index 674adb1772..260efb0eab 100644
--- a/doc/classes/MainLoop.xml
+++ b/doc/classes/MainLoop.xml
@@ -29,29 +29,28 @@
 		[/gdscript]
 		[csharp]
 		using Godot;
-		using System;
 
-		public class CustomMainLoop : MainLoop
+		public partial class CustomMainLoop : MainLoop
 		{
-		    public float TimeElapsed = 0;
+		    private double _timeElapsed = 0;
 
 		    public override void _Initialize()
 		    {
 		        GD.Print("Initialized:");
-		        GD.Print($"  Starting Time: {TimeElapsed}");
+		        GD.Print($"  Starting Time: {_timeElapsed}");
 		    }
 
-		    public override bool _Process(float delta)
+		    public override bool _Process(double delta)
 		    {
-		        TimeElapsed += delta;
+		        _timeElapsed += delta;
 		        // Return true to end the main loop.
-		        return Input.GetMouseButtonMask() != 0 || Input.IsKeyPressed((int)KeyList.Escape);
+		        return Input.GetMouseButtonMask() != 0 || Input.IsKeyPressed(Key.Escape);
 		    }
 
 		    private void _Finalize()
 		    {
 		        GD.Print("Finalized:");
-		        GD.Print($"  End Time: {TimeElapsed}");
+		        GD.Print($"  End Time: {_timeElapsed}");
 		    }
 		}
 		[/csharp]
diff --git a/doc/classes/Object.xml b/doc/classes/Object.xml
index e4607456ca..e30ff6be19 100644
--- a/doc/classes/Object.xml
+++ b/doc/classes/Object.xml
@@ -110,7 +110,7 @@
 				[/gdscript]
 				[csharp]
 				[Tool]
-				public class MyNode2D : Node2D
+				public partial class MyNode2D : Node2D
 				{
 				    private bool _holdingHammer;
 
@@ -433,9 +433,9 @@
 				    var button = new Button();
 				    // Option 1: In C#, we can use signals as events and connect with this idiomatic syntax:
 				    button.ButtonDown += OnButtonDown;
-				    // Option 2: Object.Connect() with a constructed Callable from a method group.
+				    // Option 2: GodotObject.Connect() with a constructed Callable from a method group.
 				    button.Connect(Button.SignalName.ButtonDown, Callable.From(OnButtonDown));
-				    // Option 3: Object.Connect() with a constructed Callable using a target object and method name.
+				    // Option 3: GodotObject.Connect() with a constructed Callable using a target object and method name.
 				    button.Connect(Button.SignalName.ButtonDown, new Callable(this, MethodName.OnButtonDown));
 				}
 
@@ -700,10 +700,10 @@
 				sprite2d.is_class("Node3D")   # Returns false
 				[/gdscript]
 				[csharp]
-				var sprite2d = new Sprite2D();
-				sprite2d.IsClass("Sprite2D"); // Returns true
-				sprite2d.IsClass("Node");     // Returns true
-				sprite2d.IsClass("Node3D");   // Returns false
+				var sprite2D = new Sprite2D();
+				sprite2D.IsClass("Sprite2D"); // Returns true
+				sprite2D.IsClass("Node");     // Returns true
+				sprite2D.IsClass("Node3D");   // Returns false
 				[/csharp]
 				[/codeblocks]
 				[b]Note:[/b] This method ignores [code]class_name[/code] declarations in the object's script.
@@ -747,10 +747,10 @@
 				player.SetScript(GD.Load("res://player.gd"));
 
 				player.Notification(NotificationEnterTree);
-				// The call order is Object -&gt; Node -&gt; Node2D -&gt; player.gd.
+				// The call order is GodotObject -&gt; Node -&gt; Node2D -&gt; player.gd.
 
-				player.notification(NotificationEnterTree, true);
-				// The call order is player.gd -&gt; Node2D -&gt; Node -&gt; Object.
+				player.Notification(NotificationEnterTree, true);
+				// The call order is player.gd -&gt; Node2D -&gt; Node -&gt; GodotObject.
 				[/csharp]
 				[/codeblocks]
 			</description>
diff --git a/doc/classes/ProjectSettings.xml b/doc/classes/ProjectSettings.xml
index 95bd060fc6..1b731a0f76 100644
--- a/doc/classes/ProjectSettings.xml
+++ b/doc/classes/ProjectSettings.xml
@@ -1743,7 +1743,7 @@
 			[/gdscript]
 			[csharp]
 			// Set the default gravity strength to 980.
-			PhysicsServer2D.AreaSetParam(GetViewport().FindWorld2d().Space, PhysicsServer2D.AreaParameter.Gravity, 980);
+			PhysicsServer2D.AreaSetParam(GetViewport().FindWorld2D().Space, PhysicsServer2D.AreaParameter.Gravity, 980);
 			[/csharp]
 			[/codeblocks]
 		</member>
@@ -1757,7 +1757,7 @@
 			[/gdscript]
 			[csharp]
 			// Set the default gravity direction to `Vector2(0, 1)`.
-			PhysicsServer2D.AreaSetParam(GetViewport().FindWorld2d().Space, PhysicsServer2D.AreaParameter.GravityVector, Vector2.Down)
+			PhysicsServer2D.AreaSetParam(GetViewport().FindWorld2D().Space, PhysicsServer2D.AreaParameter.GravityVector, Vector2.Down)
 			[/csharp]
 			[/codeblocks]
 		</member>
diff --git a/doc/classes/RichTextEffect.xml b/doc/classes/RichTextEffect.xml
index c01546524d..333d34d1b7 100644
--- a/doc/classes/RichTextEffect.xml
+++ b/doc/classes/RichTextEffect.xml
@@ -13,7 +13,7 @@
 		[/gdscript]
 		[csharp]
 		// The RichTextEffect will be usable like this: `[example]Some text[/example]`
-		public string bbcode = "example";
+		string bbcode = "example";
 		[/csharp]
 		[/codeblocks]
 		[b]Note:[/b] As soon as a [RichTextLabel] contains at least one [RichTextEffect], it will continuously process the effect unless the project is paused. This may impact battery life negatively.
diff --git a/doc/classes/SceneTree.xml b/doc/classes/SceneTree.xml
index bf19ebc23a..6adb37a3f7 100644
--- a/doc/classes/SceneTree.xml
+++ b/doc/classes/SceneTree.xml
@@ -74,10 +74,10 @@
 				    print("end")
 				[/gdscript]
 				[csharp]
-				public async void SomeFunction()
+				public async Task SomeFunction()
 				{
 				    GD.Print("start");
-				    await ToSignal(GetTree().CreateTimer(1.0f), "timeout");
+				    await ToSignal(GetTree().CreateTimer(1.0f), SceneTreeTimer.SignalName.Timeout);
 				    GD.Print("end");
 				}
 				[/csharp]
diff --git a/doc/classes/SceneTreeTimer.xml b/doc/classes/SceneTreeTimer.xml
index f28e65c5bf..42b070d7d9 100644
--- a/doc/classes/SceneTreeTimer.xml
+++ b/doc/classes/SceneTreeTimer.xml
@@ -14,10 +14,10 @@
 		    print("Timer ended.")
 		[/gdscript]
 		[csharp]
-		public async void SomeFunction()
+		public async Task SomeFunction()
 		{
 		    GD.Print("Timer started.");
-		    await ToSignal(GetTree().CreateTimer(1.0f), "timeout");
+		    await ToSignal(GetTree().CreateTimer(1.0f), SceneTreeTimer.SignalName.Timeout);
 		    GD.Print("Timer ended.");
 		}
 		[/csharp]
diff --git a/doc/classes/Sprite2D.xml b/doc/classes/Sprite2D.xml
index 235fef0bdd..033dbf51f3 100644
--- a/doc/classes/Sprite2D.xml
+++ b/doc/classes/Sprite2D.xml
@@ -23,11 +23,11 @@
 				            print("A click!")
 				[/gdscript]
 				[csharp]
-				public override void _Input(InputEvent inputEvent)
+				public override void _Input(InputEvent @event)
 				{
-				    if (inputEvent is InputEventMouseButton inputEventMouse)
+				    if (@event is InputEventMouseButton inputEventMouse)
 				    {
-				        if (inputEventMouse.Pressed &amp;&amp; inputEventMouse.ButtonIndex == (int)ButtonList.Left)
+				        if (inputEventMouse.Pressed &amp;&amp; inputEventMouse.ButtonIndex == MouseButton.Left)
 				        {
 				            if (GetRect().HasPoint(ToLocal(inputEventMouse.Position)))
 				            {
diff --git a/doc/classes/StreamPeer.xml b/doc/classes/StreamPeer.xml
index f05b5f7dbf..969cbac57d 100644
--- a/doc/classes/StreamPeer.xml
+++ b/doc/classes/StreamPeer.xml
@@ -223,7 +223,7 @@
 				put_data("Hello world".to_utf8())
 				[/gdscript]
 				[csharp]
-				PutData("Hello World".ToUTF8());
+				PutData("Hello World".ToUtf8());
 				[/csharp]
 				[/codeblocks]
 			</description>
diff --git a/doc/classes/Tween.xml b/doc/classes/Tween.xml
index 9bb92cf362..16e4ce3714 100644
--- a/doc/classes/Tween.xml
+++ b/doc/classes/Tween.xml
@@ -77,13 +77,13 @@
 		    tween = create_tween()
 		[/gdscript]
 		[csharp]
-		private Tween tween;
+		private Tween _tween;
 
 		public void Animate()
 		{
-		    if (tween != null)
-		        tween.Kill(); // Abort the previous animation
-		    tween = CreateTween();
+		    if (_tween != null)
+		        _tween.Kill(); // Abort the previous animation
+		    _tween = CreateTween();
 		}
 		[/csharp]
 		[/codeblocks]
diff --git a/doc/classes/UDPServer.xml b/doc/classes/UDPServer.xml
index c3a3a49a80..8151ecb625 100644
--- a/doc/classes/UDPServer.xml
+++ b/doc/classes/UDPServer.xml
@@ -9,7 +9,8 @@
 		Below a small example of how it can be used:
 		[codeblocks]
 		[gdscript]
-		class_name Server
+		# server_node.gd
+		class_name ServerNode
 		extends Node
 
 		var server := UDPServer.new()
@@ -34,35 +35,35 @@
 		        pass # Do something with the connected peers.
 		[/gdscript]
 		[csharp]
+		// ServerNode.cs
 		using Godot;
-		using System;
 		using System.Collections.Generic;
 
-		public class Server : Node
+		public partial class ServerNode : Node
 		{
-		    public UDPServer Server = new UDPServer();
-		    public List&lt;PacketPeerUDP&gt; Peers = new List&lt;PacketPeerUDP&gt;();
+		    private UdpServer _server = new UdpServer();
+		    private List&lt;PacketPeerUdp&gt; _peers  = new List&lt;PacketPeerUdp&gt;();
 
 		    public override void _Ready()
 		    {
-		        Server.Listen(4242);
+		        _server.Listen(4242);
 		    }
 
-		    public override void _Process(float delta)
+		    public override void _Process(double delta)
 		    {
-		        Server.Poll(); // Important!
-		        if (Server.IsConnectionAvailable())
+		        _server.Poll(); // Important!
+		        if (_server.IsConnectionAvailable())
 		        {
-		            PacketPeerUDP peer = Server.TakeConnection();
+		            PacketPeerUdp peer = _server.TakeConnection();
 		            byte[] packet = peer.GetPacket();
-		            GD.Print($"Accepted Peer: {peer.GetPacketIp()}:{peer.GetPacketPort()}");
-		            GD.Print($"Received Data: {packet.GetStringFromUTF8()}");
+		            GD.Print($"Accepted Peer: {peer.GetPacketIP()}:{peer.GetPacketPort()}");
+		            GD.Print($"Received Data: {packet.GetStringFromUtf8()}");
 		            // Reply so it knows we received the message.
 		            peer.PutPacket(packet);
 		            // Keep a reference so we can keep contacting the remote peer.
-		            Peers.Add(peer);
+		            _peers.Add(peer);
 		        }
-		        foreach (var peer in Peers)
+		        foreach (var peer in _peers)
 		        {
 		            // Do something with the peers.
 		        }
@@ -72,7 +73,8 @@
 		[/codeblocks]
 		[codeblocks]
 		[gdscript]
-		class_name Client
+		# client_node.gd
+		class_name ClientNode
 		extends Node
 
 		var udp := PacketPeerUDP.new()
@@ -90,30 +92,30 @@
 		        connected = true
 		[/gdscript]
 		[csharp]
+		// ClientNode.cs
 		using Godot;
-		using System;
 
-		public class Client : Node
+		public partial class ClientNode : Node
 		{
-		    public PacketPeerUDP Udp = new PacketPeerUDP();
-		    public bool Connected = false;
+		    private PacketPeerUdp _udp = new PacketPeerUdp();
+		    private bool _connected = false;
 
 		    public override void _Ready()
 		    {
-		        Udp.ConnectToHost("127.0.0.1", 4242);
+		        _udp.ConnectToHost("127.0.0.1", 4242);
 		    }
 
-		    public override void _Process(float delta)
+		    public override void _Process(double delta)
 		    {
-		        if (!Connected)
+		        if (!_connected)
 		        {
 		            // Try to contact server
-		            Udp.PutPacket("The Answer Is..42!".ToUTF8());
+		            _udp.PutPacket("The Answer Is..42!".ToUtf8());
 		        }
-		        if (Udp.GetAvailablePacketCount() &gt; 0)
+		        if (_udp.GetAvailablePacketCount() &gt; 0)
 		        {
-		            GD.Print($"Connected: {Udp.GetPacket().GetStringFromUTF8()}");
-		            Connected = true;
+		            GD.Print($"Connected: {_udp.GetPacket().GetStringFromUtf8()}");
+		            _connected = true;
 		        }
 		    }
 		}
diff --git a/doc/classes/UndoRedo.xml b/doc/classes/UndoRedo.xml
index 6c151ef958..e43bceb941 100644
--- a/doc/classes/UndoRedo.xml
+++ b/doc/classes/UndoRedo.xml
@@ -27,11 +27,11 @@
 		    undo_redo.commit_action()
 		[/gdscript]
 		[csharp]
-		public UndoRedo UndoRedo;
+		private UndoRedo _undoRedo;
 
 		public override void _Ready()
 		{
-		    UndoRedo = GetUndoRedo(); // Method of EditorPlugin.
+		    _undoRedo = GetUndoRedo(); // Method of EditorPlugin.
 		}
 
 		public void DoSomething()
@@ -47,12 +47,12 @@
 		private void OnMyButtonPressed()
 		{
 		    var node = GetNode&lt;Node2D&gt;("MyNode2D");
-		    UndoRedo.CreateAction("Move the node");
-		    UndoRedo.AddDoMethod(this, MethodName.DoSomething);
-		    UndoRedo.AddUndoMethod(this, MethodName.UndoSomething);
-		    UndoRedo.AddDoProperty(node, Node2D.PropertyName.Position, new Vector2(100, 100));
-		    UndoRedo.AddUndoProperty(node, Node2D.PropertyName.Position, node.Position);
-		    UndoRedo.CommitAction();
+		    _undoRedo.CreateAction("Move the node");
+		    _undoRedo.AddDoMethod(new Callable(this, MethodName.DoSomething));
+		    _undoRedo.AddUndoMethod(new Callable(this, MethodName.UndoSomething));
+		    _undoRedo.AddDoProperty(node, "position", new Vector2(100, 100));
+		    _undoRedo.AddUndoProperty(node, "position", node.Position);
+		    _undoRedo.CommitAction();
 		}
 		[/csharp]
 		[/codeblocks]
diff --git a/modules/mono/glue/GodotSharp/GodotSharp/Core/Extensions/PackedSceneExtensions.cs b/modules/mono/glue/GodotSharp/GodotSharp/Core/Extensions/PackedSceneExtensions.cs
index 8463403096..4610761bdb 100644
--- a/modules/mono/glue/GodotSharp/GodotSharp/Core/Extensions/PackedSceneExtensions.cs
+++ b/modules/mono/glue/GodotSharp/GodotSharp/Core/Extensions/PackedSceneExtensions.cs
@@ -7,7 +7,7 @@ namespace Godot
         /// <summary>
         /// Instantiates the scene's node hierarchy, erroring on failure.
         /// Triggers child scene instantiation(s). Triggers a
-        /// <see cref="Node.NotificationInstanced"/> notification on the root node.
+        /// <see cref="Node.NotificationSceneInstantiated"/> notification on the root node.
         /// </summary>
         /// <seealso cref="InstantiateOrNull{T}(GenEditState)"/>
         /// <exception cref="InvalidCastException">
@@ -23,7 +23,7 @@ namespace Godot
         /// <summary>
         /// Instantiates the scene's node hierarchy, returning <see langword="null"/> on failure.
         /// Triggers child scene instantiation(s). Triggers a
-        /// <see cref="Node.NotificationInstanced"/> notification on the root node.
+        /// <see cref="Node.NotificationSceneInstantiated"/> notification on the root node.
         /// </summary>
         /// <seealso cref="Instantiate{T}(GenEditState)"/>
         /// <typeparam name="T">The type to cast to. Should be a descendant of <see cref="Node"/>.</typeparam>