[Mono-bugs] [Bug 79077][Nor] Changed - ListBox: Setting SelectedItem to null doesn't match MS behaviour

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Changed by unserkonig at gmail.com.

http://bugzilla.ximian.com/show_bug.cgi?id=79077

--- shadow/79077	2006-08-15 11:15:28.000000000 -0400
+++ shadow/79077.tmp.5268	2006-08-15 19:57:26.000000000 -0400
@@ -30,6 +30,52 @@
 
 ------- Additional Comments From peter at novonyx.com  2006-08-15 10:39 -------
 ->Mike
 
 ------- Additional Comments From mkestner at ximian.com  2006-08-15 11:15 -------
 Were you attaching a sample?
+
+------- Additional Comments From unserkonig at gmail.com  2006-08-15 19:57 -------
+// Sample
+using System;
+using System.Windows.Forms;
+using System.Drawing;
+
+public class TestForm : Form
+{
+	static void Main ()
+	{
+		Application.Run (new TestForm ());
+	}
+
+	ListBox lb;
+
+	public TestForm ()
+	{
+		lb = new ListBox ();
+		lb.Location = new Point (5, 5);
+		lb.Items.AddRange (new object [] {"One", "Two"});
+		lb.Parent = this;
+		lb.SelectedIndexChanged += new EventHandler (OnSelectedIndexChanged);
+
+		Button button = new Button ();
+		button.Location = new Point (5, lb.Bottom + 5);
+		button.Size = new Size (100, 30);
+		button.Text = "Set SelectedItem";
+		button.Parent = this;
+		button.Click += new EventHandler (OnClick);
+	}
+
+	void OnClick (object o, EventArgs args)
+	{
+		lb.SelectedItem = null; // Should unselect items
+	}
+
+	void OnSelectedIndexChanged (object o, EventArgs args)
+	{
+		// Print info about the state of ListBox (SelectedIndex & SelectedItem)
+		Console.WriteLine ("Selected Item = " + (lb.SelectedItem == null ?
+"null" : lb.SelectedItem.ToString ()) +
+				"\nSelected Index = " + lb.SelectedIndex + "\n");
+	}
+}
+