XAML Designer Sample -> Better Error Display

samples/XamlDesigner/DocumentView.xaml

@@ -13,10 +13,10 @@
 		<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}}"/>
+				Visibility="{Binding InDesignMode, Converter={StaticResource CollapsedWhenFalse}}"/>
 		</Grid>
 	</DockPanel>
 </UserControl>

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

@@ -2,15 +2,22 @@
          xmlns="http://schemas.microsoft.com/netfx/2007/xaml/presentation"
          xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
          xmlns:Services="clr-namespace:ICSharpCode.WpfDesign.Designer.Services;assembly=ICSharpCode.WpfDesign.Designer">
-    <Control.Resources>
-        <DataTemplate DataType="{x:Type Services:XamlError}">
-            <StackPanel Orientation="Horizontal">
-                <Image Source="Images/Error.png"
-                       Stretch="None"
-                       Margin="2"/>
-                <TextBlock Text="{Binding Message}" 
-                           VerticalAlignment="Center"/>
-            </StackPanel>
-        </DataTemplate>
-    </Control.Resources>
+	<Control.Resources>
+		<DataTemplate DataType="{x:Type Services:XamlError}">
+			<StackPanel Orientation="Horizontal">
+				<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>
+		</DataTemplate>
+	</Control.Resources>
 </ListBox>