How to bind a Localized string in the TargetNullValue attribute?

Question

I have a Textblock which Text attribute is binding to a DateTime? type data, and I want to show something when the DateTime? data is null.
The code below works great.<

Answer 1

Since you can't have a binding inside another binding you will need to use a multi-binding.

Something like:

    



    
        
            
            
            
        
    


public class NullConverter : IMultiValueConverter
{
    #region Implementation of IMultiValueConverter

    public object Convert(object[] values, Type targetType, 
                          object parameter, CultureInfo culture)
    {
        if (values == null || values.Length != 2)
        {
            return string.Empty;
        }

        return (values[0] ?? values[1]).ToString();
    }

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

    #endregion
}