Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / ComponentModel / COM2Interop / COM2IDispatchConverter.cs / 1 / COM2IDispatchConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms.ComponentModel.Com2Interop { using System.Diagnostics; using System; using System.ComponentModel; using System.Collections; using Microsoft.Win32; using System.Globalization; internal class Com2IDispatchConverter : Com2ExtendedTypeConverter{ Com2PropertyDescriptor propDesc; ////// /// What we return textually for null. /// protected static readonly string none = SR.GetString(SR.toStringNone); private bool allowExpand; public Com2IDispatchConverter(Com2PropertyDescriptor propDesc, bool allowExpand, TypeConverter baseConverter) : base(baseConverter){ this.propDesc = propDesc; this.allowExpand = allowExpand; } public Com2IDispatchConverter(Com2PropertyDescriptor propDesc, bool allowExpand) : base(propDesc.PropertyType){ this.propDesc = propDesc; this.allowExpand = allowExpand; } ////// /// Determines if this converter can convert an object in the given source /// type to the native type of the converter. /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { return false; } ////// /// Determines if this converter can convert an object to the given destination /// type. /// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { return destinationType == typeof(string); } ////// /// Converts the given object to another type. The most common types to convert /// are to and from a string object. The default implementation will make a call /// to ToString on the object if the object is valid and if the destination /// type is string. If this cannot convert to the desitnation type, this will /// throw a NotSupportedException. /// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == typeof(string)){ if (value == null){ return none; } string text = ComNativeDescriptor.Instance.GetName(value); if (text == null || text.Length == 0){ text = ComNativeDescriptor.Instance.GetClassName(value); } if (text == null){ return "(Object)"; } return text; } return base.ConvertTo(context, culture, value, destinationType); } public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes) { return TypeDescriptor.GetProperties(value, attributes); } ////// /// Determines if this object supports properties. By default, this /// is false. /// public override bool GetPropertiesSupported(ITypeDescriptorContext context) { return this.allowExpand; } // no dropdown, please! // public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return false; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- UpdateCommandGenerator.cs
- XmlSchemaGroupRef.cs
- HttpListener.cs
- InvokeMethod.cs
- Utils.cs
- SerializationObjectManager.cs
- Cursor.cs
- AmbientProperties.cs
- basenumberconverter.cs
- PenThreadPool.cs
- ReadingWritingEntityEventArgs.cs
- DrawListViewSubItemEventArgs.cs
- AsyncPostBackErrorEventArgs.cs
- BufferModesCollection.cs
- WinEventTracker.cs
- TdsEnums.cs
- ComponentCommands.cs
- ControlEvent.cs
- ToolstripProfessionalRenderer.cs
- QuaternionRotation3D.cs
- ClientData.cs
- PropertyTab.cs
- ScriptHandlerFactory.cs
- CodeChecksumPragma.cs
- SystemIPInterfaceProperties.cs
- ChameleonKey.cs
- Thumb.cs
- CultureMapper.cs
- XmlConverter.cs
- ListViewTableRow.cs
- EventSetterHandlerConverter.cs
- SessionIDManager.cs
- Int16.cs
- coordinator.cs
- TextDecorationLocationValidation.cs
- DataGridColumnFloatingHeader.cs
- BitmapVisualManager.cs
- ScriptReference.cs
- Splitter.cs
- TextServicesDisplayAttribute.cs
- OledbConnectionStringbuilder.cs
- FixedSOMTable.cs
- ForceCopyBuildProvider.cs
- ItemsControl.cs
- ObfuscationAttribute.cs
- RotateTransform3D.cs
- SystemPens.cs
- Size3DConverter.cs
- VarRemapper.cs
- ColumnReorderedEventArgs.cs
- DataSourceControlBuilder.cs
- WebBrowserUriTypeConverter.cs
- ScriptIgnoreAttribute.cs
- ApplicationException.cs
- BitStack.cs
- IgnoreFileBuildProvider.cs
- DeflateStream.cs
- DesignerDataTableBase.cs
- MailDefinitionBodyFileNameEditor.cs
- TargetConverter.cs
- Baml2006SchemaContext.cs
- SafeProcessHandle.cs
- SpellerError.cs
- MarshalByRefObject.cs
- StorageScalarPropertyMapping.cs
- WindowsFormsEditorServiceHelper.cs
- ResolveDuplexAsyncResult.cs
- MenuItemCollection.cs
- SqlProfileProvider.cs
- TextWriter.cs
- ZoomPercentageConverter.cs
- ModulesEntry.cs
- ValidationError.cs
- BinaryFormatter.cs
- DataGridViewCellPaintingEventArgs.cs
- SerialPinChanges.cs
- WorkflowPersistenceService.cs
- RadioButtonList.cs
- ObjectReaderCompiler.cs
- XmlSubtreeReader.cs
- SafeCryptoHandles.cs
- DbConnectionInternal.cs
- Debugger.cs
- FixedDSBuilder.cs
- BasicSecurityProfileVersion.cs
- Mutex.cs
- ClipboardProcessor.cs
- Menu.cs
- StrokeNodeData.cs
- MissingManifestResourceException.cs
- OdbcCommand.cs
- DrawingContextFlattener.cs
- LineSegment.cs
- Array.cs
- HtmlContainerControl.cs
- ResourceProperty.cs
- WebPartTransformerCollection.cs
- SystemResourceHost.cs
- FormView.cs
- MetaModel.cs