Adding reference source for part of Workflow Foundation

[mono.git] / mcs / class / referencesource / System.Activities.Presentation / System.Activities.Presentation / System / Activities / Presentation / NullToBooleanConverter.cs

diff --git a/mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/NullToBooleanConverter.cs b/mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/NullToBooleanConverter.cs
new file mode 100644 (file)
index 0000000..eb73c15
--- /dev/null
+++ b/mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/NullToBooleanConverter.cs
@@ -0,0 +1,24 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.Activities.Presentation
+{
+    using System.Globalization;
+    using System.Windows.Data;
+
+    //Null To Boolean Converter
+    internal sealed class NullToBooleanConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return value != null;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw FxTrace.Exception.AsError(new NotSupportedException());
+        }
+    }
+
+}