From abc94713e8ea86a83a8fca3a450321e427c0a048 Mon Sep 17 00:00:00 2001
From: Daniel Grunwald <daniel@danielgrunwald.de>
Date: Wed, 16 Feb 2011 14:42:29 +0100
Subject: [PATCH] Allow expanding/collapsing nodes with numpad plus/minus.

---
 SharpTreeView/SharpTreeView.cs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/SharpTreeView/SharpTreeView.cs b/SharpTreeView/SharpTreeView.cs
index 4c5fd928a..4d1112736 100644
--- a/SharpTreeView/SharpTreeView.cs
+++ b/SharpTreeView/SharpTreeView.cs
@@ -192,6 +192,18 @@ namespace ICSharpCode.TreeView
 						container.Node.ActivateItem(e);
 					}
 					break;
+				case Key.Add:
+					if (container != null && ItemsControl.ItemsControlFromItemContainer(container) == this) {
+						container.Node.IsExpanded = true;
+						e.Handled = true;
+					}
+					break;
+				case Key.Subtract:
+					if (container != null && ItemsControl.ItemsControlFromItemContainer(container) == this) {
+						container.Node.IsExpanded = false;
+						e.Handled = true;
+					}
+					break;
 			}
 			if (!e.Handled)
 				base.OnKeyDown(e);