// ------------------------------------------------------------------- // Copyright (c) Microsoft Corporation. All Rights Reserved. // ------------------------------------------------------------------- //From \\authoring\Sparkle\Source\1.0.1083.0\Common\Source\Framework\Data namespace System.Activities.Presentation.Internal.PropertyEditing.FromExpression.Framework.Data { using System; using System.Collections; using System.ComponentModel; using System.Diagnostics; using System.Globalization; using System.Reflection; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Diagnostics.CodeAnalysis; using System.Runtime; // <summary> // Converts non-null to true, and null to false. // </summary> [SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses")] internal class NullToBoolConverter : IValueConverter { // IValueConverter Implementation public object ConvertBack(object o, Type targetType, object parameter, CultureInfo culture) { Fx.Assert(false, "NullToBoolConverter can only be used for forward conversion."); return null; } public object Convert(object o, Type targetType, object parameter, CultureInfo culture) { return o != null; } } } |