Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / clr / src / BCL / Microsoft / Win32 / OAVariantLib.cs / 1 / OAVariantLib.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: OAVariantLib ** ** ** Purpose: This class only exists to provide support for ** implenting IDispatch on managed objects. It is ** used to provide OleAut style coercion rules. ** ** ===========================================================*/ namespace Microsoft.Win32 { using System; using System.Reflection; using System.Runtime.CompilerServices; using CultureInfo = System.Globalization.CultureInfo; using Assert = System.Diagnostics.Assert; internal sealed class OAVariantLib { #region Contants // Constants for VariantChangeType from OleAuto.h public const int NoValueProp = 0x01; public const int AlphaBool = 0x02; public const int NoUserOverride = 0x04; public const int CalendarHijri = 0x08; public const int LocalBool = 0x10; internal static readonly Type [] ClassTypes = { typeof(Empty), typeof(void), typeof(Boolean), typeof(Char), typeof(SByte), typeof(Byte), typeof(Int16), typeof(UInt16), typeof(Int32), typeof(UInt32), typeof(Int64), typeof(UInt64), typeof(Single), typeof(Double), typeof(String), typeof(void), typeof(DateTime), typeof(TimeSpan), typeof(Object), typeof(Decimal), null, // Enums - what do we do here? typeof(Missing), typeof(DBNull), }; // Same hack hack hack - Keep these numbers in [....] w/ the above array. private const int CV_OBJECT=0x12; #endregion #region Private Constructor private OAVariantLib() { } #endregion #region Internal Methods /** * Changes a Variant from one type to another, calling the OLE * Automation VariantChangeTypeEx routine. Note the legal types here are * restricted to the subset of what can be legally found in a VB * Variant and the types that CLR supports explicitly in the * CLR Variant class. */ internal static Variant ChangeType(Variant source, Type targetClass, short options, CultureInfo culture) { if (targetClass == null) throw new ArgumentNullException("targetClass"); if (culture == null) throw new ArgumentNullException("culture"); Variant result = new Variant (); ChangeTypeEx(ref result, source, culture.LCID, GetCVTypeFromClass(targetClass), options); return result; } #endregion #region Private Helpers private static int GetCVTypeFromClass(Type ctype) { #if _DEBUG BCLDebug.Assert(ClassTypes[CV_OBJECT] == typeof(Object), "OAVariantLib::ClassTypes[CV_OBJECT] == Object.class"); #endif int cvtype=-1; for (int i=0; i
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- EventPropertyMap.cs
- PropertyKey.cs
- TryCatch.cs
- SupportsPreviewControlAttribute.cs
- SslStream.cs
- ListBoxItem.cs
- Missing.cs
- NavigatorInput.cs
- CFStream.cs
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- Debug.cs
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- Table.cs
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- IntegerFacetDescriptionElement.cs
- XmlCountingReader.cs
- OLEDB_Enum.cs
- TemplateKey.cs
- EventProxy.cs
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- OleDbStruct.cs
- NameScope.cs
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- XamlFigureLengthSerializer.cs
- SmiSettersStream.cs
- StreamUpdate.cs
- ProfileSettingsCollection.cs
- DesignerActionItem.cs
- SamlAudienceRestrictionCondition.cs
- LeftCellWrapper.cs
- TextEditorContextMenu.cs
- DataPagerCommandEventArgs.cs
- SafeNativeMethods.cs
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- FontResourceCache.cs
- AsyncOperationContext.cs
- ToolStripItemRenderEventArgs.cs
- QueryTask.cs
- CharKeyFrameCollection.cs
- TreeViewImageIndexConverter.cs
- BaseTemplateCodeDomTreeGenerator.cs
- CryptographicAttribute.cs
- EmptyCollection.cs
- DependencyPropertyHelper.cs
- TextTreeDeleteContentUndoUnit.cs
- MappingMetadataHelper.cs
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- FormsAuthenticationModule.cs
- BitHelper.cs
- CngAlgorithm.cs
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- RegistryPermission.cs
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- XmlResolver.cs
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