Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / ComponentModel / COM2Interop / COM2IDispatchConverter.cs / 1305376 / 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. // //----------------------------------------------------------------------------- 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.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- BitVector32.cs
- ThreadInterruptedException.cs
- UniqueSet.cs
- RequestCacheManager.cs
- ConfigsHelper.cs
- Literal.cs
- OAVariantLib.cs
- WebPart.cs
- XamlVector3DCollectionSerializer.cs
- HostProtectionException.cs
- TextTreeUndo.cs
- PtsContext.cs
- TrustManagerMoreInformation.cs
- WorkItem.cs
- ClientSponsor.cs
- Activity.cs
- MobileControlPersister.cs
- StringFunctions.cs
- Monitor.cs
- WindowPatternIdentifiers.cs
- MatrixTransform3D.cs
- CatalogPartCollection.cs
- PortCache.cs
- IxmlLineInfo.cs
- CellParagraph.cs
- ISCIIEncoding.cs
- DataBindingHandlerAttribute.cs
- RequestCachePolicyConverter.cs
- NullableFloatAverageAggregationOperator.cs
- ComponentResourceKeyConverter.cs
- Vector.cs
- SqlProfileProvider.cs
- RichTextBox.cs
- XmlSchemaCollection.cs
- Sql8ConformanceChecker.cs
- ListParaClient.cs
- Queue.cs
- RepeaterItemCollection.cs
- RewritingPass.cs
- XmlHierarchicalEnumerable.cs
- CodeObject.cs
- Double.cs
- FieldMetadata.cs
- DataRow.cs
- WizardForm.cs
- OdbcCommandBuilder.cs
- AdapterUtil.cs
- SwitchCase.cs
- RemotingSurrogateSelector.cs
- ConditionedDesigner.cs
- AnnotationMap.cs
- SignatureToken.cs
- HttpModuleActionCollection.cs
- PermissionRequestEvidence.cs
- MessageQueueTransaction.cs
- localization.cs
- ScriptMethodAttribute.cs
- ToolbarAUtomationPeer.cs
- ExceptionHelpers.cs
- DependencyPropertyHelper.cs
- AssemblyInfo.cs
- ExceptionAggregator.cs
- RayMeshGeometry3DHitTestResult.cs
- COAUTHINFO.cs
- ExceptionUtility.cs
- ListView.cs
- ArrayList.cs
- DatagridviewDisplayedBandsData.cs
- KeyBinding.cs
- ComponentEditorPage.cs
- MonthCalendar.cs
- ChangePassword.cs
- AtomServiceDocumentSerializer.cs
- PEFileReader.cs
- PropertyToken.cs
- BamlBinaryWriter.cs
- LocationSectionRecord.cs
- Model3D.cs
- COM2Enum.cs
- TypeUsage.cs
- StyleSheet.cs
- TextDecorationCollectionConverter.cs
- XmlDataSourceDesigner.cs
- FlagPanel.cs
- HttpCookiesSection.cs
- SQLDecimal.cs
- ToolStripItemClickedEventArgs.cs
- WebCategoryAttribute.cs
- TabPanel.cs
- SoapIncludeAttribute.cs
- ExpressionBinding.cs
- CodeAttributeDeclaration.cs
- SQLGuid.cs
- BooleanAnimationBase.cs
- MemberNameValidator.cs
- TemplateControl.cs
- ApplicationFileCodeDomTreeGenerator.cs
- Helpers.cs
- Model3DCollection.cs
- ResolveNameEventArgs.cs