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
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SvcMapFileSerializer.cs
- DataGridState.cs
- BufferedGraphicsContext.cs
- ServiceDescription.cs
- X509Chain.cs
- InfiniteIntConverter.cs
- UserPersonalizationStateInfo.cs
- ProfileGroupSettings.cs
- ParameterElement.cs
- GraphicsPath.cs
- DataDocumentXPathNavigator.cs
- FontDriver.cs
- DataGridViewTopLeftHeaderCell.cs
- TaskExceptionHolder.cs
- MDIClient.cs
- GridItemPattern.cs
- WaitForChangedResult.cs
- MemberInfoSerializationHolder.cs
- ItemCheckedEvent.cs
- NumberFormatInfo.cs
- Parameter.cs
- CaseInsensitiveComparer.cs
- SqlNotificationRequest.cs
- QEncodedStream.cs
- Profiler.cs
- ConversionContext.cs
- ChtmlCalendarAdapter.cs
- ToolboxBitmapAttribute.cs
- GenericParameterDataContract.cs
- HttpDebugHandler.cs
- DBParameter.cs
- RSAOAEPKeyExchangeDeformatter.cs
- HandleTable.cs
- ParseHttpDate.cs
- WebPartConnectionsEventArgs.cs
- EnumUnknown.cs
- FileCodeGroup.cs
- HasCopySemanticsAttribute.cs
- Glyph.cs
- XmlChildNodes.cs
- ApplicationException.cs
- InitializationEventAttribute.cs
- ComPlusServiceHost.cs
- EventProviderClassic.cs
- BroadcastEventHelper.cs
- RoleServiceManager.cs
- CompositeDataBoundControl.cs
- RSAPKCS1KeyExchangeDeformatter.cs
- SymDocumentType.cs
- DetailsViewInsertedEventArgs.cs
- IIS7WorkerRequest.cs
- XmlAtomicValue.cs
- WebDisplayNameAttribute.cs
- PieceNameHelper.cs
- DbQueryCommandTree.cs
- ExternalDataExchangeClient.cs
- TextServicesCompartmentEventSink.cs
- LOSFormatter.cs
- OleDbPropertySetGuid.cs
- DefaultBinder.cs
- ToolBarButtonDesigner.cs
- ActivityCodeDomSerializationManager.cs
- UInt64.cs
- ConditionedDesigner.cs
- ModelUIElement3D.cs
- CompressionTransform.cs
- OleDbParameterCollection.cs
- compensatingcollection.cs
- SchemaTableColumn.cs
- XPathNodeList.cs
- ZoneMembershipCondition.cs
- ItemAutomationPeer.cs
- ResourceDisplayNameAttribute.cs
- Calendar.cs
- CryptoHelper.cs
- VariantWrapper.cs
- RowParagraph.cs
- ListenerAdaptersInstallComponent.cs
- RedirectionProxy.cs
- SQLMoneyStorage.cs
- ObjectContext.cs
- WindowProviderWrapper.cs
- HistoryEventArgs.cs
- InfoCardAsymmetricCrypto.cs
- ComponentResourceKeyConverter.cs
- EntitySqlException.cs
- Operand.cs
- XDRSchema.cs
- MappingSource.cs
- SymbolTable.cs
- HtmlTableCellCollection.cs
- AutomationElement.cs
- DataServiceHostFactory.cs
- sortedlist.cs
- StdValidatorsAndConverters.cs
- Privilege.cs
- RelationshipType.cs
- SRDisplayNameAttribute.cs
- EncryptedType.cs
- FocusWithinProperty.cs