XAML Designer Sample -> Better Error Display

samples/XamlDesigner/DocumentView.xaml

@@ -13,7 +13,7 @@
 		<Grid>
 			<AvalonEdit:TextEditor
 				x:Name="uxTextEditor"
-				SyntaxHighlighting="XML"
+				SyntaxHighlighting="XML" ShowLineNumbers="True"
 				Visibility="{Binding InXamlMode, Converter={StaticResource CollapsedWhenFalse}}" />
 			<ContentPresenter Content="{Binding DesignSurface}"
 				Visibility="{Binding InDesignMode, Converter={StaticResource CollapsedWhenFalse}}"/>

samples/XamlDesigner/DocumentView.xaml.cs

@@ -52,7 +52,15 @@ namespace ICSharpCode.XamlDesigner
 			try {
 				uxTextEditor.ScrollTo(error.Line, error.Column);
 				uxTextEditor.CaretOffset = uxTextEditor.Document.GetOffset(error.Line, error.Column);
-			} catch (ArgumentException) {
+				
+				int n = 0;
+				char chr;
+				while ((chr = uxTextEditor.Document.GetCharAt(uxTextEditor.CaretOffset + n)) != ' ' && chr != '.' && chr != '<' && chr != '>' && chr != '"')
+				{ n++; }
+
+				uxTextEditor.SelectionLength = n;
+			}
+			catch (ArgumentException) {
 				// invalid line number
 			}
 		}

samples/XamlDesigner/ErrorListView.xaml

@@ -8,6 +8,13 @@
 				<Image Source="Images/Error.png"
 				       Stretch="None"
 				       Margin="2"/>
+				<TextBlock TextAlignment="Right" Text="{Binding Line}" Width="25"
+				           VerticalAlignment="Center"/>
+				<TextBlock Text=" / "
+				           VerticalAlignment="Center"/>
+				<TextBlock Text="{Binding Column}" Width="25"
+				           VerticalAlignment="Center"/>
+				<TextBlock Text=" - " />
 				<TextBlock Text="{Binding Message}"
 				           VerticalAlignment="Center"/>
 			</StackPanel>