Label doesn't display “_” character

Question

My Label.Content in WPF doesn\'t display the first occurrence of \"_\" character. Why?

Answer 1

I have several places where text bound into a Label control has to display the '_' character. So I wrote a converter:

using System;
using System.Globalization;
using System.Windows;
using System.Windows.Data;

namespace Converters
{
    public class TextToLabelConverter : DependencyObject, IValueConverter
    {
        /// <inheritdoc />
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return (value is string strValue)
                ? strValue.Replace("_", "__")
                : Binding.DoNothing;
        }

        /// <inheritdoc />
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}

Use it in the XAML thusly:

...
    xmlns:converters="clr-namespace:Converters"
...

<Window.Resources>
    <converters:TextToLabelConverter x:Key="TextToLabelConverter" />
</Window.Resources>

<Grid>
    <Label Content="{Binding SourceText, Converter={StaticResource TextToLabelConverter}}" />
</Grid>