Is it possible to make substring of string as a hyperlink?

Hi, Anusha

You can use WinRT XAML toolkit to resolve your problem. See some codes below:

 <HyperlinkButton Name="ExamplesLink" Click="ExamplesLink_Click"
   Extensions:FrameworkElementExtensions.SystemCursor="Hand">
            <TextBlock>
      <Underline>
        <Run Text="Examples"/>
      </Underline>
            </TextBlock>
        </HyperlinkButton>

Also, you can use the RichTextBlock’s tapped event and its GetPositionFromPoint method:

<RichTextBlock IsTextSelectionEnabled="False"
               Margin="30"
               Width="600"
               TextAlignment="Justify"
               FontSize="40"
               TextWrapping="Wrap"
               Tapped="UIElement_OnTapped">
            <Paragraph>
                <Run Text="HyperlinkButton have the similar purpose of enabling a user to launch a specific URI using a separate browser app." />
                <Run Text=". " />

                <Underline x:Name="LinkToInfiniteSquare"
                   Foreground="#FFFF1BF5">
                    <Run Text="and a HyperlinkButton is a control" />
                 </Underline>
            </Paragraph>
        </RichTextBlock>

Code-behind:

    private void UIElement_OnTapped(object sender, TappedRoutedEventArgs e)
{
    var richTB = sender as RichTextBlock;
    var textPointer = richTB.GetPositionFromPoint(e.GetPosition(richTB));
 
    var element = textPointer.Parent as TextElement;
    while (element != null && !(element is Underline))
    {
        if (element.ContentStart != null
            && element != element.ElementStart.Parent)
        {
            element = element.ElementStart.Parent as TextElement;
        }
        else
        {
            element = null;
        }
    }
 
    if (element == null) return;
 
    var underline = element as Underline;
    if (underline.Name == "LinkToInfiniteSquare")
    {
        Launcher.LaunchUriAsync(new Uri("http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.controls.hyperlinkbutton.aspx"));
    }
   
 
}

Best Wishes!

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