Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / WinForms / Managed / System / WinForms / ComponentModel / COM2Interop / COM2EnumConverter.cs / 1 / COM2EnumConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Windows.Forms.ComponentModel.Com2Interop { using System.Diagnostics; using System; using System.ComponentModel; using System.Drawing; using System.Collections; using Microsoft.Win32; using System.Globalization; internal class Com2EnumConverter : TypeConverter { internal readonly Com2Enum com2Enum; private StandardValuesCollection values; public Com2EnumConverter(Com2Enum enumObj) { com2Enum = enumObj; } ////// /// 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) { if (sourceType == typeof(string)) { return true; } return base.CanConvertFrom(context, sourceType); } public override bool CanConvertTo(ITypeDescriptorContext context, Type destType) { if (base.CanConvertTo(context, destType)) { return true; } return destType.IsEnum; } ////// /// Converts the given object to the converter's native type. /// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value is string) { return com2Enum.FromString((string)value); } return base.ConvertFrom(context, culture, value); } ////// /// 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 == null) { throw new ArgumentNullException("destinationType"); } if (destinationType == typeof(string)) { if (value != null) { string str = com2Enum.ToString(value); return (str == null ? "" : str); } } if (destinationType.IsEnum) { return Enum.ToObject(destinationType, value); } return base.ConvertTo(context, culture, value, destinationType); } ////// /// Retrieves a collection containing a set of standard values /// for the data type this validator is designed for. This /// will return null if the data type does not support a /// standard set of values. /// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { if (values == null) { object[] objValues = com2Enum.Values; if (objValues != null) { values = new StandardValuesCollection(objValues); } } return values; } ////// /// Determines if the list of standard values returned from /// GetStandardValues is an exclusive list. If the list /// is exclusive, then no other values are valid, such as /// in an enum data type. If the list is not exclusive, /// then there are other valid values besides the list of /// standard values GetStandardValues provides. /// public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return com2Enum.IsStrictEnum; } ////// /// Determines if this object supports a standard set of values /// that can be picked from a list. /// public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } ////// /// Determines if the given object value is valid for this type. /// public override bool IsValid(ITypeDescriptorContext context, object value) { string strValue = com2Enum.ToString(value); return strValue != null && strValue.Length > 0; } public void RefreshValues() { this.values = null; } } } // 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.Drawing; using System.Collections; using Microsoft.Win32; using System.Globalization; internal class Com2EnumConverter : TypeConverter { internal readonly Com2Enum com2Enum; private StandardValuesCollection values; public Com2EnumConverter(Com2Enum enumObj) { com2Enum = enumObj; } ////// /// 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) { if (sourceType == typeof(string)) { return true; } return base.CanConvertFrom(context, sourceType); } public override bool CanConvertTo(ITypeDescriptorContext context, Type destType) { if (base.CanConvertTo(context, destType)) { return true; } return destType.IsEnum; } ////// /// Converts the given object to the converter's native type. /// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value is string) { return com2Enum.FromString((string)value); } return base.ConvertFrom(context, culture, value); } ////// /// 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 == null) { throw new ArgumentNullException("destinationType"); } if (destinationType == typeof(string)) { if (value != null) { string str = com2Enum.ToString(value); return (str == null ? "" : str); } } if (destinationType.IsEnum) { return Enum.ToObject(destinationType, value); } return base.ConvertTo(context, culture, value, destinationType); } ////// /// Retrieves a collection containing a set of standard values /// for the data type this validator is designed for. This /// will return null if the data type does not support a /// standard set of values. /// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { if (values == null) { object[] objValues = com2Enum.Values; if (objValues != null) { values = new StandardValuesCollection(objValues); } } return values; } ////// /// Determines if the list of standard values returned from /// GetStandardValues is an exclusive list. If the list /// is exclusive, then no other values are valid, such as /// in an enum data type. If the list is not exclusive, /// then there are other valid values besides the list of /// standard values GetStandardValues provides. /// public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return com2Enum.IsStrictEnum; } ////// /// Determines if this object supports a standard set of values /// that can be picked from a list. /// public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } ////// /// Determines if the given object value is valid for this type. /// public override bool IsValid(ITypeDescriptorContext context, object value) { string strValue = com2Enum.ToString(value); return strValue != null && strValue.Length > 0; } public void RefreshValues() { this.values = null; } } } // 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
- DynamicVirtualDiscoSearcher.cs
- ComboBoxDesigner.cs
- RtfControlWordInfo.cs
- ReservationNotFoundException.cs
- COM2ExtendedUITypeEditor.cs
- GeometryGroup.cs
- ArgumentValueSerializer.cs
- NameTable.cs
- PolyBezierSegmentFigureLogic.cs
- Socket.cs
- CertificateManager.cs
- ZipIOLocalFileBlock.cs
- NotFiniteNumberException.cs
- ModelFunctionTypeElement.cs
- BaseCollection.cs
- AttributeConverter.cs
- AttachedPropertiesService.cs
- PersonalizationStateInfo.cs
- ColumnWidthChangingEvent.cs
- HyperlinkAutomationPeer.cs
- StateMachine.cs
- ObjRef.cs
- CultureInfoConverter.cs
- ValuePattern.cs
- Options.cs
- EditorPartChrome.cs
- FunctionDescription.cs
- IxmlLineInfo.cs
- Command.cs
- DbParameterCollectionHelper.cs
- NameTable.cs
- SymLanguageType.cs
- SqlTriggerAttribute.cs
- LineUtil.cs
- PropertyRecord.cs
- TextBlock.cs
- ModifierKeysConverter.cs
- NativeWindow.cs
- Stylesheet.cs
- smtpconnection.cs
- ObjectViewFactory.cs
- ItemChangedEventArgs.cs
- AsymmetricKeyExchangeDeformatter.cs
- InfoCardAsymmetricCrypto.cs
- Form.cs
- ThemeDirectoryCompiler.cs
- SchemaNotation.cs
- Shared.cs
- SapiRecoInterop.cs
- OracleColumn.cs
- CallSiteHelpers.cs
- XmlWrappingWriter.cs
- ConfigXmlSignificantWhitespace.cs
- XmlAtomicValue.cs
- DataGridViewTextBoxColumn.cs
- MethodBuilderInstantiation.cs
- Queue.cs
- Image.cs
- XmlDocumentType.cs
- XmlDomTextWriter.cs
- MessageDirection.cs
- NewArrayExpression.cs
- TimersDescriptionAttribute.cs
- entityreference_tresulttype.cs
- XmlEntity.cs
- LineVisual.cs
- ObsoleteAttribute.cs
- Speller.cs
- TextBoxRenderer.cs
- AxImporter.cs
- JulianCalendar.cs
- MediaSystem.cs
- TransformerTypeCollection.cs
- BamlResourceSerializer.cs
- XmlSchemaChoice.cs
- ConstantCheck.cs
- FilterableAttribute.cs
- QuaternionAnimationBase.cs
- Graph.cs
- PersistenceMetadataNamespace.cs
- ListMarkerSourceInfo.cs
- SiteMapPath.cs
- RewritingProcessor.cs
- Clipboard.cs
- FrameworkReadOnlyPropertyMetadata.cs
- SqlFacetAttribute.cs
- XmlSchemaType.cs
- HWStack.cs
- WindowsFormsHost.cs
- CodeMemberProperty.cs
- UpdateDelegates.Generated.cs
- MouseCaptureWithinProperty.cs
- HttpProfileGroupBase.cs
- SafeMILHandleMemoryPressure.cs
- Helpers.cs
- ToolStripDropDownClosedEventArgs.cs
- RegexTree.cs
- QilParameter.cs
- MenuItemAutomationPeer.cs
- WebPartDisplayModeCancelEventArgs.cs