CODEWITHSUNDEEP
c#wpfxaml
Gethma
Gethma

Reputation: 309

How to display a text without the whitespaces in Xaml textbox

I get an input from a different view model, and i need to show it in another window without the white spaces inserted. But it should not replace the original text. I need the white spaces removed only when displayed

Upvotes: 1

Views: 709

Answers (1)

Ankush Madankar
Ankush Madankar

Reputation: 3834

Here you need Converter to trim your text like this:

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

[ValueConversion( typeof( string ), typeof( string ) )]
public class NoWhiteSpaceTextConverter : IValueConverter
{
    public object Convert( object value, Type targetType, object parameter, CultureInfo culture )
    {
        if ( ( value is string ) == false )
        {
            throw new ArgumentNullException( "value should be string type" );
        }

        string returnValue = ( value as string );

        return returnValue != null ? returnValue.Trim() : returnValue;
    }

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

And use converter with text binding in xaml like this:

<Windows.Resources>         
     <converter:NoWhiteSpaceTextConverter x:Key="noWhiteSpaceTextConverter"></converter:NoWhiteSpaceTextConverter>            
</Windows.Resources>

<TextBox Text="{Binding YourTextWithSpaces, Converter={StaticResource noWhiteSpaceTextConverter}}" />

Upvotes: 1

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