Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / Tools / System.Activities.Core.Presentation / System / Activities / Core / Presentation / NotConverter.cs / 1305376 / NotConverter.cs
//---------------------------------------------------------------- // Copyright (c) Microsoft Corporation. All rights reserved. //--------------------------------------------------------------- namespace System.Activities.Core.Presentation { // Code borrowed from System.Activities.Presentation using System; using System.ComponentModel; using System.Windows; using System.Windows.Data; using System.Globalization; using System.Reflection; using System.Diagnostics.CodeAnalysis; //// Transform bool value using logical not. // [SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses")] internal sealed class NotConverter : IValueConverter { // IValueConverter Members public object Convert(object o, Type targetType, object parameter, CultureInfo culture) { return !(bool)o; } public object ConvertBack(object o, Type targetType, object parameter, CultureInfo culture) { return !AssureBool(o, false); } static bool AssureBool(object value, bool defaultIfNull) { if (value is bool?) { bool? nbValue = (bool?)value; if (nbValue.HasValue) { return nbValue.Value; } else { return defaultIfNull; } } return (bool)value; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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