toggle button in silverlight3

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I am making the project as coding in c# and designing in silverlight3..

I have three toggle button "bold" , "Italics" , "underline"

I have done the coding for bold and italics

void _btnBold1_Click(object sender, RoutedEventArgs e)
{
try
{
if (_btnBold1.IsChecked.HasValue)
{
txtMailBody1.Selection.FontWeight = _btnBold1.IsChecked.Value ? FontWeights.Bold : FontWeights.Normal;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}

void _btnItalics1_Click(object sender, RoutedEventArgs e)
{
try
{
if (_btnItalics1.IsChecked.HasValue)
{
txtMailBody1.Selection.FontStyle = _btnItalics1.IsChecked.Value ? FontStyles.Italic : FontStyles.Normal;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}

but In don't know what coding is required for underline....

void _btnUnderline_Click(object sender, RoutedEventArgs e)
{
if (_btnUnderline.IsChecked.HasValue)
{

}
}

Posted 22-Jan-10 20:25pm

HanuBaba

Updated 23-Jan-10 19:09pm

Abhinav S

v4

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Abhinav S · Answer 1 · 2010-01-22T20:59:00

Solution 1

Try using something like -
txtMailBody1.TextDecorations=TextDecorations.Underline;

Posted 22-Jan-10 20:59pm

Abhinav S

Updated 22-Jan-10 21:00pm

v2

Abhinav S · Answer 2 · 2010-01-23T18:50:00

If this is the Component one rich text box - have a look at their documentation here.

They provide the following solution.
You need to do the same

private void _btnUnderline_Click(object sender, RoutedEventArgs e)
{
bool underline = _rtb.Selection.TextDecorations ==
TextDecorations.Underline;
_rtb.Selection.TextDecorations = underline
? null
: TextDecorations.Underline;
}

Your code will be something like this - txtMailBody1.Selection.TextDecorations == TextDecoration.Underline;