ProgressBar added to OpenFromGacDialog.

ILSpy/OpenFromGacDialog.xaml

@@ -39,5 +39,6 @@
 			<Button IsDefault="True" Margin="2,0" IsEnabled="False" Name="okButton" Click="OKButton_Click">Open</Button>
 			<Button IsCancel="True" Margin="2,0">Cancel</Button>
 		</StackPanel>
+		<ProgressBar Grid.Row="1" Height="10" HorizontalAlignment="Stretch" Name="gacReadingProgressBar" VerticalAlignment="Bottom" Visibility="Hidden" />
 	</Grid>
 </Window>

ILSpy/OpenFromGacDialog.xaml.cs

@@ -40,55 +40,55 @@ namespace ICSharpCode.ILSpy
 		ObservableCollection<GacEntry> gacEntries = new ObservableCollection<GacEntry>();
 		ObservableCollection<GacEntry> filteredEntries = new ObservableCollection<GacEntry>();
 		volatile bool cancelFetchThread;
-		
+
 		public OpenFromGacDialog()
 		{
 			InitializeComponent();
 			listView.ItemsSource = filteredEntries;
 			SortableGridViewColumn.SetCurrentSortColumn(listView, nameColumn);
 			SortableGridViewColumn.SetSortDirection(listView, ColumnSortDirection.Ascending);
-			
+
 			new Thread(new ThreadStart(FetchGacContents)).Start();
 		}
-		
+
 		protected override void OnClosing(CancelEventArgs e)
 		{
 			base.OnClosing(e);
 			cancelFetchThread = true;
 		}
-		
+
 		#region Fetch Gac Contents
 		sealed class GacEntry
 		{
 			readonly AssemblyNameReference r;
 			readonly string fileName;
-			
+
 			public GacEntry(AssemblyNameReference r, string fileName)
 			{
 				this.r = r;
 				this.fileName = fileName;
 			}
-			
+
 			public string FullName {
 				get { return r.FullName; }
 			}
-			
+
 			public string ShortName {
 				get { return r.Name; }
 			}
-			
+
 			public string FileName {
 				get { return fileName; }
 			}
-			
+
 			public Version Version {
 				get { return r.Version; }
 			}
-			
+
 			public string Culture {
 				get { return r.Culture; }
 			}
-			
+
 			public string PublicKeyToken {
 				get {
 					StringBuilder s = new StringBuilder();
@@ -97,29 +97,38 @@ namespace ICSharpCode.ILSpy
 					return s.ToString();
 				}
 			}
-			
+
 			public override string ToString()
 			{
 				return r.FullName;
 			}
 		}
-		
+
 		void FetchGacContents()
 		{
 			HashSet<string> fullNames = new HashSet<string>();
-			foreach (var r in GacInterop.GetGacAssemblyFullNames()) {
+			UpdateProgressBar(pg => { pg.Visibility = System.Windows.Visibility.Visible; pg.IsIndeterminate = true; });
+			var list = GacInterop.GetGacAssemblyFullNames().TakeWhile(_ => !cancelFetchThread).ToList();
+			UpdateProgressBar(pg => { pg.IsIndeterminate = false; pg.Maximum = list.Count; });
+			foreach (var r in list) {
 				if (cancelFetchThread)
-					return;
+					break;
 				if (fullNames.Add(r.FullName)) { // filter duplicates
 					var file = GacInterop.FindAssemblyInNetGac(r);
 					if (file != null) {
 						var entry = new GacEntry(r, file);
-						Dispatcher.BeginInvoke(DispatcherPriority.Normal, new Action<GacEntry>(AddNewEntry), entry);
+						UpdateProgressBar(pg => { pg.Value = pg.Value + 1; AddNewEntry(entry); });
 					}
 				}
 			}
+			UpdateProgressBar(pg => { pg.Visibility = System.Windows.Visibility.Hidden; });
+		}
+
+		void UpdateProgressBar(Action<ProgressBar> updateAction)
+		{
+			Dispatcher.BeginInvoke(DispatcherPriority.Normal, (Action)(() => updateAction(gacReadingProgressBar)));
 		}
-		
+
 		void AddNewEntry(GacEntry entry)
 		{
 			gacEntries.Add(entry);
@@ -128,7 +137,7 @@ namespace ICSharpCode.ILSpy
 				filteredEntries.Add(entry);
 		}
 		#endregion
-		
+
 		void FilterTextBox_TextChanged(object sender, TextChangedEventArgs e)
 		{
 			string filter = filterTextBox.Text;
@@ -138,18 +147,18 @@ namespace ICSharpCode.ILSpy
 					filteredEntries.Add(entry);
 			}
 		}
-		
+
 		void ListView_SelectionChanged(object sender, SelectionChangedEventArgs e)
 		{
 			okButton.IsEnabled = listView.SelectedItems.Count > 0;
 		}
-		
+
 		void OKButton_Click(object sender, RoutedEventArgs e)
 		{
 			this.DialogResult = true;
 			Close();
 		}
-		
+
 		public string[] SelectedFileNames {
 			get {
 				return listView.SelectedItems.OfType<GacEntry>().Select(e => e.FileName).ToArray();