Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / 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
- ResourcePart.cs
- InternalConfigSettingsFactory.cs
- SponsorHelper.cs
- View.cs
- LineMetrics.cs
- Point3DAnimation.cs
- IpcClientManager.cs
- XmlTextAttribute.cs
- TabOrder.cs
- MembershipValidatePasswordEventArgs.cs
- CellParagraph.cs
- ModulesEntry.cs
- InProcStateClientManager.cs
- validationstate.cs
- ThumbButtonInfoCollection.cs
- FontSizeConverter.cs
- URLString.cs
- PassportAuthenticationEventArgs.cs
- Visual3D.cs
- HttpWriter.cs
- WrappingXamlSchemaContext.cs
- Vector3D.cs
- MenuCommand.cs
- PixelShader.cs
- ToolStripLabel.cs
- WebServiceHostFactory.cs
- WebService.cs
- IfAction.cs
- TerminatorSinks.cs
- hresults.cs
- SerTrace.cs
- WCFModelStrings.Designer.cs
- PrintingPermission.cs
- DecoderReplacementFallback.cs
- XmlWrappingWriter.cs
- InitializeCorrelation.cs
- SqlVersion.cs
- CacheVirtualItemsEvent.cs
- DataServiceClientException.cs
- AggregatePushdown.cs
- OdbcConnectionString.cs
- LayoutUtils.cs
- TextParagraph.cs
- DataSourceDescriptorCollection.cs
- VisualBrush.cs
- RowSpanVector.cs
- ToolboxBitmapAttribute.cs
- Int32.cs
- IconConverter.cs
- TraceContextEventArgs.cs
- InvokeSchedule.cs
- SingleSelectRootGridEntry.cs
- DataTableTypeConverter.cs
- Propagator.JoinPropagator.cs
- AssociationEndMember.cs
- BridgeDataRecord.cs
- log.cs
- FormatException.cs
- SerializerWriterEventHandlers.cs
- PtsContext.cs
- ConsumerConnectionPoint.cs
- WebPartMenuStyle.cs
- DrawingState.cs
- ContextMenuStrip.cs
- StatusBarPanelClickEvent.cs
- ImageAttributes.cs
- MSAAEventDispatcher.cs
- CryptoApi.cs
- Set.cs
- DataFormats.cs
- XmlILOptimizerVisitor.cs
- StandardTransformFactory.cs
- UInt32Storage.cs
- GridPattern.cs
- DataGridViewTextBoxCell.cs
- FormatException.cs
- _PooledStream.cs
- Tablet.cs
- ChangeNode.cs
- CompilerScope.cs
- FileVersionInfo.cs
- PermissionSetTriple.cs
- Light.cs
- X509ClientCertificateAuthentication.cs
- SQLUtility.cs
- DataReceivedEventArgs.cs
- XmlSerializerFactory.cs
- LayoutSettings.cs
- AdapterDictionary.cs
- SystemKeyConverter.cs
- AppearanceEditorPart.cs
- EventDescriptorCollection.cs
- TextDecorationCollection.cs
- AuthenticationServiceManager.cs
- AggregateNode.cs
- XPathMultyIterator.cs
- Pair.cs
- DesignerCategoryAttribute.cs
- BufferBuilder.cs
- ArrayMergeHelper.cs