fix deleting rows from settings designer

src/AddIns/DisplayBindings/SettingsEditor/Project/SettingsView.Designer.cs

@@ -53,13 +53,14 @@ namespace ICSharpCode.SettingsEditor
 									this.ValueColumn});
 			this.grid.DataSource = this.bindingSource;
 			this.grid.Dock = System.Windows.Forms.DockStyle.Fill;
-			this.grid.EditMode = System.Windows.Forms.DataGridViewEditMode.EditOnEnter;
+			this.grid.EditMode = System.Windows.Forms.DataGridViewEditMode.EditOnKeystroke;
 			this.grid.Location = new System.Drawing.Point(0, 0);
 			this.grid.Name = "grid";
 			this.grid.Size = new System.Drawing.Size(486, 362);
 			this.grid.TabIndex = 0;
 			this.grid.DataError += new System.Windows.Forms.DataGridViewDataErrorEventHandler(this.GridDataError);
 			this.grid.SelectionChanged += new System.EventHandler(this.GridSelectionChanged);
+			this.grid.UserDeletingRow += new System.Windows.Forms.DataGridViewRowCancelEventHandler(this.GridUserDeletingRow);
 			// 
 			// NameColumn
 			// 

src/AddIns/DisplayBindings/SettingsEditor/Project/SettingsView.cs

@@ -49,12 +49,8 @@ namespace ICSharpCode.SettingsEditor
 		
 		public SettingsView()
 		{
-			//
-			// The InitializeComponent() call is required for Windows Forms designer support.
-			//
 			InitializeComponent();
 			
-			
 			ambience = AmbienceService.GetCurrentAmbience();
 			foreach (Type type in defaultAvailableTypes) {
 				types.Add(type);
@@ -77,9 +73,7 @@ namespace ICSharpCode.SettingsEditor
 			bindingSource.ListChanged += delegate(object sender, ListChangedEventArgs e) {
 				if (e.NewIndex >= 0 && e.NewIndex < bindingSource.Count) {
 					if (((SettingsEntry)bindingSource[e.NewIndex]).Name != null) {
-						if (SettingsChanged != null) {
+						OnSettingsChanged(e);
-							SettingsChanged(this, e);
-						}
 					}
 				}
 			};
@@ -163,5 +157,19 @@ namespace ICSharpCode.SettingsEditor
 			}
 			return null;
 		}
+		
+		void GridUserDeletingRow(object sender, DataGridViewRowCancelEventArgs e)
+		{
+			if (e.Row != null && !e.Cancel) {
+				OnSettingsChanged(EventArgs.Empty);
+			}
+		}
+		
+		protected virtual void OnSettingsChanged(EventArgs e)
+		{
+			if (SettingsChanged != null) {
+				SettingsChanged(this, e);
+			}
+		}
 	}
 }

src/AddIns/DisplayBindings/SettingsEditor/Project/SettingsViewContent.cs

@@ -31,7 +31,8 @@ namespace ICSharpCode.SettingsEditor
 				propertyContainer.SelectedObjects = view.GetSelectedEntriesForPropertyGrid().ToArray();
 			};
 			view.SettingsChanged += delegate {
-				this.PrimaryFile.MakeDirty();
+				if (this.PrimaryFile != null)
+					this.PrimaryFile.MakeDirty();
 				if (appConfigFile != null)
 					appConfigFile.MakeDirty();
 			};