Silverlight and WPF Boolean Not Converter…To be or NOT to be

So you have an IsReadOnly flag on your viewmodel, but you want to set the IsEnabled property on control. A conundrum for a binding, right.

Well, simple solution to an annoying problem. Use the converter below on your binding and it becomes opposite day.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Data;
 
namespace Seekford{
   
public class BooleanNotConverter : IValueConverter
    {
       
//easy peezy.
 
       
/// <summary>
       
/// Converts a value.
       
/// </summary>
       
/// <param name="value">The value produced by the binding source.</param>
       
/// <param name="targetType">The type of the binding target property.</param>
       
/// <param name="parameter">The converter parameter to use.</param>
       
/// <param name="culture">The culture to use in the converter.</param>
       
/// <returns>
       
/// A converted value. If the method returns null, the valid null value is used.
       
/// </returns>
       
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
           
return !(bool)value;
        }
 
       
/// <summary>
       
/// Converts a value.
       
/// </summary>
       
/// <param name="value">The value that is produced by the binding target.</param>
       
/// <param name="targetType">The type to convert to.</param>
       
/// <param name="parameter">The converter parameter to use.</param>
       
/// <param name="culture">The culture to use in the converter.</param>
       
/// <returns>
       
/// A converted value. If the method returns null, the valid null value is used.
       
/// </returns>
       
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
           
return !(bool)value;
        }
 
        
    }
}

 

Happy Coding!

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