Get the Source value in ConvertBack() method for IValueConverter implementation in WPF binding

Question

I am binding a dependency property to textboxex in WPF. The property is a string that has some values separated by \'/\' (example: \"1/2/3/4\" ). I need to bind individual v

Answer 1

I just built up quick sample. Please check if you are looking for the same. This is working at my end.

• Xaml Code

• Code Behind

  public class TextConverter : IValueConverter {
      #region IValueConverter Members
  
      public object Convert (object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) {
          string input = (string)value;
          char[] sep = {'/'};
          string[] iparray = input.Split (sep);
          int index = Int32.Parse((string)parameter);
  
          return iparray[index];
      }
  
      public object ConvertBack (object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) {
          throw new NotImplementedException ();
      }
  
      #endregion
  }
  

However, I couldn't understand the exact issue with ConvertBack method. Could you please elaborate on this?