Initial commit

ExtendedListBoxControl/ExtendedListBox.cs

@@ -0,0 +1,32 @@
+using System.Windows;
+using System.Windows.Controls;
+
+namespace Common.Wpf.ExtendedListBoxControl
+{
+    public class ExtendedListBox : ListBox
+    {
+        protected override DependencyObject GetContainerForItemOverride()
+        {
+            return new ExtendedListBoxItem();
+        }
+
+        private int _lastSelectedIndex = -1;
+
+        protected override void OnSelectionChanged(SelectionChangedEventArgs e)
+        {
+            base.OnSelectionChanged(e);
+
+            if (SelectedIndex == -1 && _lastSelectedIndex != -1)
+            {
+                int itemCount = Items.Count;
+
+                if (_lastSelectedIndex >= itemCount)
+                    _lastSelectedIndex = itemCount - 1;
+
+                SelectedIndex = _lastSelectedIndex;
+            }
+
+            _lastSelectedIndex = SelectedIndex;
+        }
+    }
+}