Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / Data / System / Data / ColumnTypeConverter.cs / 1 / ColumnTypeConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- /* */ namespace System.Data { using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Diagnostics; using System.Globalization; using System.Data.SqlTypes; ////// internal sealed class ColumnTypeConverter : TypeConverter { private static Type[] types = new Type[] { typeof(Boolean), typeof(Byte), typeof(Byte[]), typeof(Char), typeof(DateTime), typeof(Decimal), typeof(Double), typeof(Guid), typeof(Int16), typeof(Int32), typeof(Int64), typeof(object), typeof(SByte), typeof(Single), typeof(string), typeof(TimeSpan), typeof(UInt16), typeof(UInt32), typeof(UInt64), typeof(SqlInt16), typeof(SqlInt32), typeof(SqlInt64), typeof(SqlDecimal), typeof(SqlSingle), typeof(SqlDouble), typeof(SqlString), typeof(SqlBoolean), typeof(SqlBinary), typeof(SqlByte), typeof(SqlDateTime), typeof(SqlGuid), typeof(SqlMoney), typeof(SqlBytes), typeof(SqlChars), typeof(SqlXml) }; private StandardValuesCollection values; // converter classes should have public ctor public ColumnTypeConverter() { } ///Provides a type /// converter that can be used to populate a list box with available types. ////// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor)) { return true; } return base.CanConvertTo(context, destinationType); } ///Gets a value indicating whether this converter can /// convert an object to the given destination type using the context. ////// 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) { return String.Empty; } else { value.ToString(); } } if (value != null && destinationType == typeof(InstanceDescriptor)) { Object newValue = value; if (value is string) { for (int i = 0; i < types.Length; i++) { if (types[i].ToString().Equals(value)) newValue = types[i]; } } if (value is Type || value is string) { System.Reflection.MethodInfo method = typeof(Type).GetMethod("GetType", new Type[] {typeof(string)}); // change done for security review if (method != null) { return new InstanceDescriptor(method, new object[] {((Type)newValue).AssemblyQualifiedName}); } } } return base.ConvertTo(context, culture, value, destinationType); } public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } return base.CanConvertTo(context, sourceType); } public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value != null && value.GetType() == typeof(string)) { for (int i = 0; i < types.Length; i++) { if (types[i].ToString().Equals(value)) return types[i]; } return typeof(string); } return base.ConvertFrom(context, culture, value); } ///Converts the given value object to the specified destination type. ////// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { if (values == null) { object[] objTypes; if (types != null) { objTypes = new object[types.Length]; Array.Copy(types, objTypes, types.Length); } else { objTypes = null; } values = new StandardValuesCollection(objTypes); } return values; } ///Gets a collection of standard values for the data type this validator is /// designed for. ////// public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return true; } ///Gets a value indicating whether the list of standard values returned from /// ///is an exclusive list. /// public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //Gets a value indicating whether this object supports a /// standard set of values that can be picked from a list using the specified /// context. ///// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- /* */ namespace System.Data { using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Diagnostics; using System.Globalization; using System.Data.SqlTypes; ////// internal sealed class ColumnTypeConverter : TypeConverter { private static Type[] types = new Type[] { typeof(Boolean), typeof(Byte), typeof(Byte[]), typeof(Char), typeof(DateTime), typeof(Decimal), typeof(Double), typeof(Guid), typeof(Int16), typeof(Int32), typeof(Int64), typeof(object), typeof(SByte), typeof(Single), typeof(string), typeof(TimeSpan), typeof(UInt16), typeof(UInt32), typeof(UInt64), typeof(SqlInt16), typeof(SqlInt32), typeof(SqlInt64), typeof(SqlDecimal), typeof(SqlSingle), typeof(SqlDouble), typeof(SqlString), typeof(SqlBoolean), typeof(SqlBinary), typeof(SqlByte), typeof(SqlDateTime), typeof(SqlGuid), typeof(SqlMoney), typeof(SqlBytes), typeof(SqlChars), typeof(SqlXml) }; private StandardValuesCollection values; // converter classes should have public ctor public ColumnTypeConverter() { } ///Provides a type /// converter that can be used to populate a list box with available types. ////// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor)) { return true; } return base.CanConvertTo(context, destinationType); } ///Gets a value indicating whether this converter can /// convert an object to the given destination type using the context. ////// 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) { return String.Empty; } else { value.ToString(); } } if (value != null && destinationType == typeof(InstanceDescriptor)) { Object newValue = value; if (value is string) { for (int i = 0; i < types.Length; i++) { if (types[i].ToString().Equals(value)) newValue = types[i]; } } if (value is Type || value is string) { System.Reflection.MethodInfo method = typeof(Type).GetMethod("GetType", new Type[] {typeof(string)}); // change done for security review if (method != null) { return new InstanceDescriptor(method, new object[] {((Type)newValue).AssemblyQualifiedName}); } } } return base.ConvertTo(context, culture, value, destinationType); } public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } return base.CanConvertTo(context, sourceType); } public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value != null && value.GetType() == typeof(string)) { for (int i = 0; i < types.Length; i++) { if (types[i].ToString().Equals(value)) return types[i]; } return typeof(string); } return base.ConvertFrom(context, culture, value); } ///Converts the given value object to the specified destination type. ////// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { if (values == null) { object[] objTypes; if (types != null) { objTypes = new object[types.Length]; Array.Copy(types, objTypes, types.Length); } else { objTypes = null; } values = new StandardValuesCollection(objTypes); } return values; } ///Gets a collection of standard values for the data type this validator is /// designed for. ////// public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return true; } ///Gets a value indicating whether the list of standard values returned from /// ///is an exclusive list. /// public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.Gets a value indicating whether this object supports a /// standard set of values that can be picked from a list using the specified /// context. ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- HiddenFieldPageStatePersister.cs
- ParameterCollection.cs
- TextRunCacheImp.cs
- PlaceHolder.cs
- ThreadInterruptedException.cs
- Converter.cs
- ListBindingConverter.cs
- IriParsingElement.cs
- SafePipeHandle.cs
- Image.cs
- RuleInfoComparer.cs
- CompilationUtil.cs
- HMACSHA512.cs
- TypeExtensions.cs
- DataChangedEventManager.cs
- GeneratedContractType.cs
- ExceptionWrapper.cs
- designeractionbehavior.cs
- InternalPolicyElement.cs
- SqlIdentifier.cs
- Point3DCollection.cs
- AssociationEndMember.cs
- LinqDataSourceUpdateEventArgs.cs
- LinqDataSourceContextEventArgs.cs
- TripleDES.cs
- WebPartEditVerb.cs
- BinaryUtilClasses.cs
- FormViewRow.cs
- EntityProviderServices.cs
- ImportCatalogPart.cs
- SmtpTransport.cs
- ReflectionPermission.cs
- FontSource.cs
- StatusStrip.cs
- DesignerAutoFormatStyle.cs
- ServiceOperationHelpers.cs
- TextWriter.cs
- ArrangedElement.cs
- HandleScope.cs
- ObjectStateEntry.cs
- Grid.cs
- FileDialogPermission.cs
- NullPackagingPolicy.cs
- Queue.cs
- TargetControlTypeAttribute.cs
- ModelService.cs
- Content.cs
- Preprocessor.cs
- DefaultAuthorizationContext.cs
- DesignTimeTemplateParser.cs
- TextContainerHelper.cs
- StreamInfo.cs
- datacache.cs
- VersionPair.cs
- ProxyFragment.cs
- DesignOnlyAttribute.cs
- UiaCoreTypesApi.cs
- ComponentChangingEvent.cs
- CannotUnloadAppDomainException.cs
- SplitterEvent.cs
- BinaryConverter.cs
- WindowsTreeView.cs
- QueryStringParameter.cs
- BinHexDecoder.cs
- newinstructionaction.cs
- ConfigurationValidatorAttribute.cs
- BrowserCapabilitiesCodeGenerator.cs
- VSWCFServiceContractGenerator.cs
- TextEmbeddedObject.cs
- AutoResizedEvent.cs
- WebPartConnectionsCloseVerb.cs
- ProfileBuildProvider.cs
- AssertSection.cs
- Transform.cs
- RemoteWebConfigurationHost.cs
- _KerberosClient.cs
- DrawListViewItemEventArgs.cs
- SqlFunctionAttribute.cs
- UpdateExpressionVisitor.cs
- MissingFieldException.cs
- AlphaSortedEnumConverter.cs
- SocketElement.cs
- VectorConverter.cs
- XmlHierarchyData.cs
- DataServiceQueryContinuation.cs
- QueryInterceptorAttribute.cs
- Line.cs
- UserNamePasswordValidator.cs
- ColorConverter.cs
- EndpointInfoCollection.cs
- LeftCellWrapper.cs
- RoleManagerSection.cs
- ControlPropertyNameConverter.cs
- DataObjectSettingDataEventArgs.cs
- SmiMetaData.cs
- ProcessHost.cs
- SchemaNames.cs
- FormatterServices.cs
- DataSourceExpressionCollection.cs
- basevalidator.cs