Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / xsp / System / Web / UI / PropertyConverter.cs / 1 / PropertyConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI { using System; using System.ComponentModel; using System.Globalization; using System.Reflection; using System.Runtime.Serialization.Formatters; using System.Security.Permissions; ////// /// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public static class PropertyConverter { private static readonly Type[] s_parseMethodTypes = new Type[] { typeof(string) }; private static readonly Type[] s_parseMethodTypesWithSOP = new Type[] { typeof(string), typeof(IServiceProvider) }; /* * Contains helpers to convert properties from strings to their types and vice versa. */ /* * Converts a persisted enumeration value into its numeric value. * Hyphen characters in the persisted format are converted to underscores. */ ////// public static object EnumFromString(Type enumType, string value) { try { return Enum.Parse(enumType, value, true); } catch { return null; } } /* * Converts a numeric enumerated value into its persisted form, which is the * code name with underscores replaced by hyphens. */ ////// public static string EnumToString(Type enumType, object enumValue) { string value = Enum.Format(enumType, enumValue, "G"); // return value.Replace('_','-'); } /* * Converts the persisted string into an object using the object's * FromString method. */ ////// public static object ObjectFromString(Type objType, MemberInfo propertyInfo, string value) { if (value == null) return null; // Blank valued bools don't map with FromString. Return null to allow // caller to interpret. if (objType.Equals(typeof(bool)) && value.Length == 0) { return null; } bool useParseMethod = true; object ret = null; try { if (objType.IsEnum) { useParseMethod = false; ret = EnumFromString(objType, value); } else if (objType.Equals(typeof(string))) { useParseMethod = false; ret = value; } else { PropertyDescriptor pd = null; if (propertyInfo != null) { pd = TypeDescriptor.GetProperties(propertyInfo.ReflectedType)[propertyInfo.Name]; } if (pd != null) { TypeConverter converter = pd.Converter; if (converter != null && converter.CanConvertFrom(typeof(string))) { useParseMethod = false; ret = converter.ConvertFromInvariantString(value); } } } } catch { } if (useParseMethod) { // resort to Parse static method on the type // First try Parse(string, IServiceProvider); MethodInfo methodInfo = objType.GetMethod("Parse", s_parseMethodTypesWithSOP); if (methodInfo != null) { object[] parameters = new object[2]; parameters[0] = value; parameters[1] = CultureInfo.InvariantCulture; try { ret = Util.InvokeMethod(methodInfo, null, parameters); } catch { } } else { // Try the simpler: Parse(string); methodInfo = objType.GetMethod("Parse", s_parseMethodTypes); if (methodInfo != null) { object[] parameters = new object[1]; parameters[0] = value; try { ret = Util.InvokeMethod(methodInfo, null, parameters); } catch { } } } } if (ret == null) { // Unhandled... throw an exception, so user sees an error at parse time // Note that we don't propagate inner exceptions here, since they usually // do not give any information about where the bad value existed on // the object being initialized, whereas, our exception gives that // information. throw new HttpException(SR.GetString(SR.Type_not_creatable_from_string, objType.FullName, value, propertyInfo.Name)); } return ret; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI { using System; using System.ComponentModel; using System.Globalization; using System.Reflection; using System.Runtime.Serialization.Formatters; using System.Security.Permissions; ////// /// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public static class PropertyConverter { private static readonly Type[] s_parseMethodTypes = new Type[] { typeof(string) }; private static readonly Type[] s_parseMethodTypesWithSOP = new Type[] { typeof(string), typeof(IServiceProvider) }; /* * Contains helpers to convert properties from strings to their types and vice versa. */ /* * Converts a persisted enumeration value into its numeric value. * Hyphen characters in the persisted format are converted to underscores. */ ////// public static object EnumFromString(Type enumType, string value) { try { return Enum.Parse(enumType, value, true); } catch { return null; } } /* * Converts a numeric enumerated value into its persisted form, which is the * code name with underscores replaced by hyphens. */ ////// public static string EnumToString(Type enumType, object enumValue) { string value = Enum.Format(enumType, enumValue, "G"); // return value.Replace('_','-'); } /* * Converts the persisted string into an object using the object's * FromString method. */ ////// public static object ObjectFromString(Type objType, MemberInfo propertyInfo, string value) { if (value == null) return null; // Blank valued bools don't map with FromString. Return null to allow // caller to interpret. if (objType.Equals(typeof(bool)) && value.Length == 0) { return null; } bool useParseMethod = true; object ret = null; try { if (objType.IsEnum) { useParseMethod = false; ret = EnumFromString(objType, value); } else if (objType.Equals(typeof(string))) { useParseMethod = false; ret = value; } else { PropertyDescriptor pd = null; if (propertyInfo != null) { pd = TypeDescriptor.GetProperties(propertyInfo.ReflectedType)[propertyInfo.Name]; } if (pd != null) { TypeConverter converter = pd.Converter; if (converter != null && converter.CanConvertFrom(typeof(string))) { useParseMethod = false; ret = converter.ConvertFromInvariantString(value); } } } } catch { } if (useParseMethod) { // resort to Parse static method on the type // First try Parse(string, IServiceProvider); MethodInfo methodInfo = objType.GetMethod("Parse", s_parseMethodTypesWithSOP); if (methodInfo != null) { object[] parameters = new object[2]; parameters[0] = value; parameters[1] = CultureInfo.InvariantCulture; try { ret = Util.InvokeMethod(methodInfo, null, parameters); } catch { } } else { // Try the simpler: Parse(string); methodInfo = objType.GetMethod("Parse", s_parseMethodTypes); if (methodInfo != null) { object[] parameters = new object[1]; parameters[0] = value; try { ret = Util.InvokeMethod(methodInfo, null, parameters); } catch { } } } } if (ret == null) { // Unhandled... throw an exception, so user sees an error at parse time // Note that we don't propagate inner exceptions here, since they usually // do not give any information about where the bad value existed on // the object being initialized, whereas, our exception gives that // information. throw new HttpException(SR.GetString(SR.Type_not_creatable_from_string, objType.FullName, value, propertyInfo.Name)); } return ret; } } } // 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
- ISAPIApplicationHost.cs
- WindowsRichEdit.cs
- HtmlMeta.cs
- XmlDomTextWriter.cs
- SqlComparer.cs
- AlternateView.cs
- Base64Encoder.cs
- WSSecureConversation.cs
- TableLayoutColumnStyleCollection.cs
- GenericPrincipal.cs
- Receive.cs
- SetterBase.cs
- StoreContentChangedEventArgs.cs
- TypeElement.cs
- ColumnResizeUndoUnit.cs
- PtsPage.cs
- DATA_BLOB.cs
- SmtpLoginAuthenticationModule.cs
- DEREncoding.cs
- StringFunctions.cs
- Condition.cs
- ExpressionPrefixAttribute.cs
- counter.cs
- WebPartDisplayMode.cs
- PathGradientBrush.cs
- DynamicQueryableWrapper.cs
- StateWorkerRequest.cs
- COM2IProvidePropertyBuilderHandler.cs
- __Filters.cs
- GeometryCombineModeValidation.cs
- Brush.cs
- ToolBarPanel.cs
- ComponentGlyph.cs
- DataServiceRequest.cs
- SendingRequestEventArgs.cs
- AnnotationComponentManager.cs
- OleTxTransaction.cs
- Transaction.cs
- DelegateOutArgument.cs
- WmpBitmapEncoder.cs
- MaskInputRejectedEventArgs.cs
- WorkflowFormatterBehavior.cs
- FrameSecurityDescriptor.cs
- ToolStripArrowRenderEventArgs.cs
- Environment.cs
- ObjectConverter.cs
- FileChangesMonitor.cs
- SimpleApplicationHost.cs
- UserPreferenceChangingEventArgs.cs
- BamlStream.cs
- ClientReliableChannelBinder.cs
- FileDialog_Vista_Interop.cs
- BaseValidator.cs
- SocketManager.cs
- PropertyGridCommands.cs
- SessionParameter.cs
- MultiPageTextView.cs
- AssociatedControlConverter.cs
- MemoryRecordBuffer.cs
- StyleCollection.cs
- ManagementBaseObject.cs
- XmlComplianceUtil.cs
- SQLResource.cs
- TreeSet.cs
- UrlMapping.cs
- OperationGenerator.cs
- SystemColors.cs
- GCHandleCookieTable.cs
- ConnectionProviderAttribute.cs
- DependencyPropertyConverter.cs
- TerminatorSinks.cs
- TreeViewItemAutomationPeer.cs
- TypeResolvingOptionsAttribute.cs
- ProcessHost.cs
- ConfigUtil.cs
- ItemContainerProviderWrapper.cs
- StringWriter.cs
- SizeAnimationBase.cs
- Timer.cs
- DataGridViewRowPrePaintEventArgs.cs
- RefreshPropertiesAttribute.cs
- TableItemPatternIdentifiers.cs
- CredentialCache.cs
- LightweightEntityWrapper.cs
- InkCanvasAutomationPeer.cs
- Math.cs
- DoubleCollectionValueSerializer.cs
- OrthographicCamera.cs
- ReverseInheritProperty.cs
- SHA512Managed.cs
- ServiceOperationParameter.cs
- Condition.cs
- CqlLexerHelpers.cs
- ActivityValidationServices.cs
- RoleExceptions.cs
- ByteConverter.cs
- ApplicationDirectoryMembershipCondition.cs
- ParserStreamGeometryContext.cs
- HttpProfileBase.cs
- PluggableProtocol.cs