Underline a Label in C#

Question

Hey I have tried to underline a Label in C#. What I am trying to do is modifying the Label control so it looks like a hyperlink.

I have tried a lot of stuff and looked at many sites/blogs but haven't found a solution. I thought about using a TextBlock instead but there must be a way to do it with Label controls.

<Label Name="link" HorizontalAlignment="Stretch" VerticalAlignment="Center" Foreground="Blue"></Label>

I hope you can help me and appreciate any kind of help.

EDIT: Forgot to mention that I am using the WPF framework.

Answer 1

You can not use a Label with underline. Use a TextBlock instead. The difference is not very noticeable besides the better styling options for a TextBlock.

Answer 2

You can use a Linked Label:

http://msdn.microsoft.com/en-us/library/system.windows.forms.linklabel(v=vs.110).aspx

Or:

this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Underline, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

Disregard after your edit stating it's a WPF project.

Answer 3

If all you want is a link, you can use a HyperLink as the content for a label.

<Label x:Name="link">
    <Hyperlink NavigateUri="http://www.stackoverflow.com">
        Click here to go to StackOverflow
     </Hyperlink>
</Label>

It will underline the text and set the font color to a blue color. I don't know how to actually make it navigate to that page, however. Sorry about that.

Answer 4

I am still new at WPF and C# but it appears that a label contains a built-in text block. I have a project with a lot of buttons on the main menu. Each button has a label next to it. The requirement was to change the color of the label and underline it when the button next to it has focus.

There is probably a way easier way to do this but this is how I accomplished it:

1. I wrapped each label-button pair into a stack panel so that there was only one child other than the button (which is the label).

2. Then I can use UIHelper and VisualTreeHelper to find the built in text block to add and remove the underline.

Hope this helps someone.

The XAML:

<StackPanel Grid.Row="1"
            Grid.ColumnSpan="2"
            Orientation="Horizontal"
            >
  <atris:AtrLabel Width="15"
                  HorizontalAlignment="Left"
                  Content="1"
                  Style="{StaticResource SomeStyle}"
                  />
  <atris:AtrButton Margin="0,0,0,0"
                   HorizontalAlignment="Left"
                   VerticalAlignment="Stretch"
                   VerticalContentAlignment="Top"
                   Command="{Binding SomeCommand}"
                   Content="Deposit"
                   >
    <i:Interaction.Triggers>
      <i:EventTrigger EventName="GotFocus">
        <cmd:EventToCommand Command="{Binding Path=SetLabelForeground}" PassEventArgsToCommand="True"/>
      </i:EventTrigger>
      <i:EventTrigger EventName="LostFocus">
        <cmd:EventToCommand Command="{Binding Path=RemoveLabelForeground}" PassEventArgsToCommand="True"/>
      </i:EventTrigger>
    </i:Interaction.Triggers>
  </atris:AtrButton>
</StackPanel>

The ViewModel:

protected sealed override void InitCommands()
  {
     SetLabelForeground = new RelayCommand<RoutedEventArgs>(SetForegroundOnLable);
     RemoveLabelForeground = new RelayCommand<RoutedEventArgs>(UnSetForegroundOnLable);
  }
   //changes the number back to gray and removes underline 
  private void UnSetForegroundOnLable(RoutedEventArgs obj)
  {
    Label closestLable = GetChildLabel(obj);
    closestLable.Foreground = new System.Windows.Media.SolidColorBrush((Color)ColorConverter.ConvertFromString("#666666"));
    TextBlock childTextBlock = UIHelper.FindVisualChild<TextBlock>(closestLable);
    childTextBlock.TextDecorations.Remove(TextDecorations.Underline[0]);
  }
  //changes the number to blue and underlines it
  private void SetForegroundOnLable(RoutedEventArgs obj)
  {
    Label closestLable = GetChildLabel(obj);
    closestLable.Foreground = new System.Windows.Media.SolidColorBrush((Color)ColorConverter.ConvertFromString("#FF009df3"));
    TextBlock childTextBlock = UIHelper.FindVisualChild<TextBlock>(closestLable);
    childTextBlock.TextDecorations.Add(System.Windows.TextDecorations.Underline);
  }
  //gets the number next to the button
  private static Label GetChildLabel(RoutedEventArgs obj)
  {
    Button buttonThatHasFocus = (Button)obj.OriginalSource;
    DependencyObject parent = VisualTreeHelper.GetParent(buttonThatHasFocus);
    Label closestLable = UIHelper.FindVisualChild<Label>(parent);
    return closestLable;
  }