mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/VariableExpressionConverter.cs

   1 //----------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 //----------------------------------------------------------------
   4
   5 namespace System.Activities.Presentation
   6 {
   7     using System.Diagnostics;
   8     using System.Globalization;
   9     using System.Windows.Data;
  10     using System.Activities.Presentation.Model;
  11
  12     class VariableExpressionConverter : IValueConverter
  13     {
  14         public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
  15         {
  16             return value;
  17         }
  18
  19         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
  20         {
  21             object convertedValue = null;
  22             if (value != null)
  23             {
  24                 if (value is ModelItem)
  25                 {
  26                     convertedValue = ((ModelItem)value).GetCurrentValue();
  27                 }
  28                 else
  29                 {
  30                     convertedValue = value;
  31                 }
  32             }
  33             return convertedValue;
  34         }
  35     }
  36 }