Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / Data / System / Data / OleDb / PropertyIDSet.cs / 1 / PropertyIDSet.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- using System; using System.Data; using System.Data.Common; using System.Data.ProviderBase; using System.Diagnostics; using System.Runtime.InteropServices; using System.Runtime.CompilerServices; using System.Security; using System.Security.Permissions; namespace System.Data.OleDb { internal sealed class PropertyIDSet : DbBuffer { static private readonly int PropertyIDSetAndValueSize = ODB.SizeOf_tagDBPROPIDSET + ADP.PtrSize; // sizeof(tagDBPROPIDSET) + sizeof(int) static private readonly int PropertyIDSetSize = ODB.SizeOf_tagDBPROPIDSET; private int _count; // the PropertyID is stored at the end of the tagDBPROPIDSET structure // this way only a single memory allocation is required instead of two internal PropertyIDSet(Guid propertySet, int propertyID) : base(PropertyIDSetAndValueSize) { _count = 1; // rgPropertyIDs references where that PropertyID is stored // depending on IntPtr.Size, tagDBPROPIDSET is either 24 or 28 bytes long IntPtr ptr = ADP.IntPtrOffset(base.handle, PropertyIDSetSize); Marshal.WriteIntPtr(base.handle, 0, ptr); Marshal.WriteInt32(base.handle, ADP.PtrSize, /*propertyid count*/1); ptr = ADP.IntPtrOffset(base.handle, ODB.OffsetOf_tagDBPROPIDSET_PropertySet); Marshal.StructureToPtr(propertySet, ptr, false/*deleteold*/); // write the propertyID at the same offset Marshal.WriteInt32(base.handle, PropertyIDSetSize, propertyID); } // no propertyIDs, just the propertyset guids internal PropertyIDSet(Guid[] propertySets) : base(PropertyIDSetSize * propertySets.Length) { _count = propertySets.Length; for(int i = 0; i < propertySets.Length; ++i) { IntPtr ptr = ADP.IntPtrOffset(base.handle, (i * PropertyIDSetSize) + ODB.OffsetOf_tagDBPROPIDSET_PropertySet); Marshal.StructureToPtr(propertySets[i], ptr, false/*deleteold*/); } } internal int Count { get { return _count; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- using System; using System.Data; using System.Data.Common; using System.Data.ProviderBase; using System.Diagnostics; using System.Runtime.InteropServices; using System.Runtime.CompilerServices; using System.Security; using System.Security.Permissions; namespace System.Data.OleDb { internal sealed class PropertyIDSet : DbBuffer { static private readonly int PropertyIDSetAndValueSize = ODB.SizeOf_tagDBPROPIDSET + ADP.PtrSize; // sizeof(tagDBPROPIDSET) + sizeof(int) static private readonly int PropertyIDSetSize = ODB.SizeOf_tagDBPROPIDSET; private int _count; // the PropertyID is stored at the end of the tagDBPROPIDSET structure // this way only a single memory allocation is required instead of two internal PropertyIDSet(Guid propertySet, int propertyID) : base(PropertyIDSetAndValueSize) { _count = 1; // rgPropertyIDs references where that PropertyID is stored // depending on IntPtr.Size, tagDBPROPIDSET is either 24 or 28 bytes long IntPtr ptr = ADP.IntPtrOffset(base.handle, PropertyIDSetSize); Marshal.WriteIntPtr(base.handle, 0, ptr); Marshal.WriteInt32(base.handle, ADP.PtrSize, /*propertyid count*/1); ptr = ADP.IntPtrOffset(base.handle, ODB.OffsetOf_tagDBPROPIDSET_PropertySet); Marshal.StructureToPtr(propertySet, ptr, false/*deleteold*/); // write the propertyID at the same offset Marshal.WriteInt32(base.handle, PropertyIDSetSize, propertyID); } // no propertyIDs, just the propertyset guids internal PropertyIDSet(Guid[] propertySets) : base(PropertyIDSetSize * propertySets.Length) { _count = propertySets.Length; for(int i = 0; i < propertySets.Length; ++i) { IntPtr ptr = ADP.IntPtrOffset(base.handle, (i * PropertyIDSetSize) + ODB.OffsetOf_tagDBPROPIDSET_PropertySet); Marshal.StructureToPtr(propertySets[i], ptr, false/*deleteold*/); } } internal int Count { get { return _count; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- Rotation3D.cs
- GenericWebPart.cs
- ProcessRequestArgs.cs
- VisualStyleInformation.cs
- RedirectionProxy.cs
- _LoggingObject.cs
- MetadataImporter.cs
- CompositeActivityValidator.cs
- DllNotFoundException.cs
- AudioBase.cs
- ShellProvider.cs
- OutputWindow.cs
- FileSystemEventArgs.cs
- SerialStream.cs
- SeparatorAutomationPeer.cs
- SettingsPropertyNotFoundException.cs
- RequestQueryProcessor.cs
- DesignerCategoryAttribute.cs
- SafeNativeMethodsOther.cs
- CheckBoxRenderer.cs
- ReaderWriterLock.cs
- SocketInformation.cs
- ExpressionSelection.cs
- WebBrowserHelper.cs
- TemplateContainer.cs
- BeginEvent.cs
- Nodes.cs
- ItemContainerPattern.cs
- ReadOnlyHierarchicalDataSource.cs
- GuidelineCollection.cs
- odbcmetadatacollectionnames.cs
- ListViewUpdatedEventArgs.cs
- IndexedWhereQueryOperator.cs
- LoadedEvent.cs
- BitmapSourceSafeMILHandle.cs
- ToolBarOverflowPanel.cs
- Fonts.cs
- TrustManagerPromptUI.cs
- SHA512Managed.cs
- MetadataPropertyCollection.cs
- NavigationHelper.cs
- ComPlusAuthorization.cs
- ConfigXmlComment.cs
- Msec.cs
- Canvas.cs
- Int64KeyFrameCollection.cs
- Mouse.cs
- SqlDataSourceCommandEventArgs.cs
- TdsParserStateObject.cs
- LayoutEditorPart.cs
- ModifierKeysValueSerializer.cs
- Timer.cs
- ZipPackagePart.cs
- Debugger.cs
- Encoder.cs
- ItemsChangedEventArgs.cs
- cookie.cs
- IDispatchConstantAttribute.cs
- VScrollBar.cs
- UnsafeNativeMethods.cs
- DropShadowEffect.cs
- DetailsViewPageEventArgs.cs
- XmlQueryContext.cs
- UnmanagedMemoryStreamWrapper.cs
- GeneratedView.cs
- XmlEntityReference.cs
- InstanceOwner.cs
- Point3D.cs
- TimeoutException.cs
- ValidatedControlConverter.cs
- Environment.cs
- TraceRecord.cs
- SqlGenerator.cs
- EndEvent.cs
- IEnumerable.cs
- SafeNativeMethodsCLR.cs
- DataControlField.cs
- TdsParameterSetter.cs
- DesignerSerializerAttribute.cs
- NativeCppClassAttribute.cs
- TrustLevel.cs
- Matrix3DConverter.cs
- Formatter.cs
- WebPartConnectionsEventArgs.cs
- PartitionResolver.cs
- OperationInvokerTrace.cs
- EventMappingSettingsCollection.cs
- ApplicationBuildProvider.cs
- WebPartDisplayModeEventArgs.cs
- ParserExtension.cs
- ScaleTransform.cs
- GlobalizationSection.cs
- PhoneCall.cs
- WsdlBuildProvider.cs
- UserNamePasswordValidator.cs
- SystemSounds.cs
- OleDbCommand.cs
- ElementsClipboardData.cs
- Drawing.cs
- ObjectStateEntry.cs