Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / 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
- EventProxy.cs
- HttpStaticObjectsCollectionBase.cs
- GroupItemAutomationPeer.cs
- ImageClickEventArgs.cs
- LinqToSqlWrapper.cs
- ProxySimple.cs
- EnumerableRowCollection.cs
- HwndSubclass.cs
- DynamicObject.cs
- ActivityScheduledQuery.cs
- CoreSwitches.cs
- DataGridViewCellCollection.cs
- ValueUnavailableException.cs
- OSFeature.cs
- SrgsRulesCollection.cs
- HttpGetProtocolReflector.cs
- CodeObjectCreateExpression.cs
- TemplateDefinition.cs
- GenericIdentity.cs
- Ref.cs
- XmlSchemaSet.cs
- DbTransaction.cs
- FrameAutomationPeer.cs
- ReadonlyMessageFilter.cs
- XmlAttributeCollection.cs
- MatrixCamera.cs
- AnchoredBlock.cs
- AdapterDictionary.cs
- PagesSection.cs
- RecordsAffectedEventArgs.cs
- InputGestureCollection.cs
- AccessorTable.cs
- localization.cs
- CodeNamespaceCollection.cs
- OutputWindow.cs
- SmtpTransport.cs
- SkewTransform.cs
- TraceSection.cs
- BooleanKeyFrameCollection.cs
- Pen.cs
- SslStreamSecurityBindingElement.cs
- TCPListener.cs
- MarkupProperty.cs
- TemplatedMailWebEventProvider.cs
- ParseChildrenAsPropertiesAttribute.cs
- Stroke.cs
- NamespaceEmitter.cs
- DebugControllerThread.cs
- HtmlValidationSummaryAdapter.cs
- ConfigXmlSignificantWhitespace.cs
- MatrixUtil.cs
- XslAstAnalyzer.cs
- _LoggingObject.cs
- ProfilePropertySettingsCollection.cs
- ReadingWritingEntityEventArgs.cs
- AppSettingsSection.cs
- OleDbRowUpdatingEvent.cs
- QilSortKey.cs
- ThicknessAnimation.cs
- MultiAsyncResult.cs
- ManagementQuery.cs
- XamlFilter.cs
- WorkBatch.cs
- GridLengthConverter.cs
- ForceCopyBuildProvider.cs
- ExecutedRoutedEventArgs.cs
- ArraySortHelper.cs
- HttpCachePolicyElement.cs
- AssociationSet.cs
- MappableObjectManager.cs
- WorkflowInstanceProxy.cs
- SQLDecimalStorage.cs
- ThreadStaticAttribute.cs
- SemanticKeyElement.cs
- CompModSwitches.cs
- NameValuePair.cs
- RuntimeCompatibilityAttribute.cs
- SignedXml.cs
- DSGeneratorProblem.cs
- MenuAutoFormat.cs
- EnumerableCollectionView.cs
- RouteParametersHelper.cs
- ViewLoader.cs
- XpsS0ValidatingLoader.cs
- OleDbDataReader.cs
- IPipelineRuntime.cs
- ZipArchive.cs
- DirectoryNotFoundException.cs
- DataGridViewRowCancelEventArgs.cs
- ImagingCache.cs
- DetailsViewUpdatedEventArgs.cs
- SmiConnection.cs
- ListViewUpdateEventArgs.cs
- safelink.cs
- StringWriter.cs
- SingleAnimation.cs
- Camera.cs
- MenuItemCollection.cs
- ReadOnlyCollection.cs
- IncrementalHitTester.cs