Code style #130 (#132)

This closes #99.

Aga.Controls/Tree/NodeControls/NodeControlValueEventArgs.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Aga.Controls.Tree.NodeControls
+{
+	public class NodeControlValueEventArgs : NodeEventArgs
+	{
+		private object _value;
+		public object Value
+		{
+			get { return _value; }
+			set { _value = value; }
+		}
+
+		public NodeControlValueEventArgs(TreeNodeAdv node)
+			:base(node)
+		{
+		}
+	}
+}