Add C# code examples to the docs

Only existing GDScript code examples are converted and added to the
docs.
This is the first batch include classes beginning with A and B.

Included classes:
 * AcceptDialog
 * AESContext
 * Animation
 * AnimationNodeStateMachine
 * AnimationNodeStateMachinePlayback
 * AnimationNodeStateMachineTransition
 * Array
 * ArrayMesh
 * AStar
 * AStar2D
 * Bool
 * Button

1 files changed, 67 insertions, 16 deletions

diff --git a/doc/classes/bool.xml b/doc/classes/bool.xml
index 869fc14d40..ce4d000a9b 100644
--- a/doc/classes/bool.xml
+++ b/doc/classes/bool.xml
@@ -6,36 +6,87 @@
 	<description>
 		Boolean is a built-in type. There are two boolean values: [code]true[/code] and [code]false[/code]. You can think of it as an switch with on or off (1 or 0) setting. Booleans are used in programming for logic in condition statements, like [code]if[/code] statements.
 		Booleans can be directly used in [code]if[/code] statements. The code below demonstrates this on the [code]if can_shoot:[/code] line. You don't need to use [code]== true[/code], you only need [code]if can_shoot:[/code]. Similarly, use [code]if not can_shoot:[/code] rather than [code]== false[/code].
-		[codeblock]
-		var can_shoot = true
+		[codeblocks]
+		[gdscript]
+		var _can_shoot = true
 
 		func shoot():
-		    if can_shoot:
+		    if _can_shoot:
 		        pass # Perform shooting actions here.
-		[/codeblock]
+		[/gdscript]
+		[csharp]
+		private bool _canShoot = true;
+
+		public void Shoot()
+		{
+		    if (_canShoot)
+		    {
+		        // Perform shooting actions here.
+		    }
+		}
+		[/csharp]
+		[/codeblocks]
 		The following code will only create a bullet if both conditions are met: action "shoot" is pressed and if [code]can_shoot[/code] is [code]true[/code].
 		[b]Note:[/b] [code]Input.is_action_pressed("shoot")[/code] is also a boolean that is [code]true[/code] when "shoot" is pressed and [code]false[/code] when "shoot" isn't pressed.
-		[codeblock]
-		var can_shoot = true
+		[codeblocks]
+		[gdscript]
+		var _can_shoot = true
 
 		func shoot():
-		    if can_shoot and Input.is_action_pressed("shoot"):
+		    if _can_shoot and Input.is_action_pressed("shoot"):
 		        create_bullet()
-		[/codeblock]
+		[/gdscript]
+		[csharp]
+		private bool _canShoot = true;
+
+		public void Shoot()
+		{
+		    if (_canShoot &amp;&amp; Input.IsActionPressed("shoot"))
+		    {
+		        CreateBullet();
+		    }
+		}
+		[/csharp]
+		[/codeblocks]
 		The following code will set [code]can_shoot[/code] to [code]false[/code] and start a timer. This will prevent player from shooting until the timer runs out. Next [code]can_shoot[/code] will be set to [code]true[/code] again allowing player to shoot once again.
-		[codeblock]
-		var can_shoot = true
-		onready var cool_down = $CoolDownTimer
+		[gdscript]
+		var _can_shoot = true
+		onready var _cool_down = $CoolDownTimer
 
 		func shoot():
-		    if can_shoot and Input.is_action_pressed("shoot"):
+		    if _can_shoot and Input.is_action_pressed("shoot"):
 		        create_bullet()
-		        can_shoot = false
-		        cool_down.start()
+		        _can_shoot = false
+		        _cool_down.start()
 
 		func _on_CoolDownTimer_timeout():
-		    can_shoot = true
-		[/codeblock]
+		    _can_shoot = true
+		[/gdscript]
+		[csharp]
+		private bool _canShoot = true;
+		private Timer _coolDown;
+
+		public override void _Ready()
+		{
+		    _coolDown = GetNode&lt;Timer&gt;("CoolDownTimer");
+		}
+
+		public void Shoot()
+		{
+		    if (_canShoot &amp;&amp; Input.IsActionPressed("shoot"))
+		    {
+		        CreateBullet();
+		        _canShoot = false;
+		        _coolDown.Start();
+		    }
+		}
+
+		public void OnCoolDownTimerTimeout()
+		{
+		    _canShoot = true;
+		}
+		[/csharp]
+		[/codeblocks]
 	</description>
 	<tutorials>
 	</tutorials>