Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Shared / MS / Internal / HashHelper.cs / 1305600 / HashHelper.cs
//---------------------------------------------------------------------------- // //// Copyright (C) 2003 by Microsoft Corporation. All rights reserved. // // // // Description: Static class to help work around hashing-related bugs. // //--------------------------------------------------------------------------- using System; using MS.Internal; // BaseHashHelper #if WINDOWS_BASE namespace MS.Internal.Hashing.WindowsBase #elif PRESENTATION_CORE namespace MS.Internal.Hashing.PresentationCore #elif PRESENTATIONFRAMEWORK using System.ComponentModel; // ICustomTypeDescriptor namespace MS.Internal.Hashing.PresentationFramework #else #error Attempt to define HashHelper in an unknown assembly. namespace MS.Internal.YourAssemblyName #endif { internal static class HashHelper { // The class cctor registers this assembly's exceptional types with // the base helper. static HashHelper() { Initialize(); // this makes FxCop happy - otherwise Initialize is "unused code" Type[] types = new Type[] { #if WINDOWS_BASE #elif PRESENTATION_CORE typeof(System.Windows.Media.CharacterMetrics), // bug 1612093 typeof(System.Windows.Ink.ExtendedProperty), // bug 1612101 typeof(System.Windows.Media.FamilyTypeface), // bug 1612103 typeof(System.Windows.Media.NumberSubstitution), // bug 1612105 #elif PRESENTATIONFRAMEWORK typeof(System.Windows.Markup.Localizer.BamlLocalizableResource), // bug 1612118 typeof(System.Windows.ComponentResourceKey), // bug 1612119 #endif }; BaseHashHelper.RegisterTypes(typeof(HashHelper).Assembly, types); // initialize lower-level assemblies #if PRESENTATIONFRAMEWORK MS.Internal.Hashing.PresentationCore.HashHelper.Initialize(); #endif } // certain objects don't have reliable hashcodes, and cannot be used // within a Hashtable, Dictionary, etc. internal static bool HasReliableHashCode(object item) { return BaseHashHelper.HasReliableHashCode(item); } // this method doesn't do anything, but calling it makes sure the static // cctor gets called internal static void Initialize() { } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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