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
- HashRepartitionEnumerator.cs
- MembershipUser.cs
- Vector3DAnimation.cs
- ReferentialConstraint.cs
- SpellerInterop.cs
- Collection.cs
- ButtonBaseAdapter.cs
- SharedConnectionInfo.cs
- RoutedEventValueSerializer.cs
- LocatorBase.cs
- CfgParser.cs
- SoapEnumAttribute.cs
- Misc.cs
- PerCallInstanceContextProvider.cs
- DrawingAttributes.cs
- httpstaticobjectscollection.cs
- Literal.cs
- CharEntityEncoderFallback.cs
- UnorderedHashRepartitionStream.cs
- FileLogRecordStream.cs
- ScriptMethodAttribute.cs
- MultiPropertyDescriptorGridEntry.cs
- XamlReader.cs
- FormatSelectingMessageInspector.cs
- AuthenticationService.cs
- JoinTreeNode.cs
- XamlTypeMapper.cs
- Logging.cs
- HttpStreamXmlDictionaryReader.cs
- MenuScrollingVisibilityConverter.cs
- ReadOnlyCollectionBuilder.cs
- SynchronizedRandom.cs
- HttpCapabilitiesEvaluator.cs
- SqlOuterApplyReducer.cs
- VideoDrawing.cs
- CheckBoxDesigner.cs
- ScrollContentPresenter.cs
- MenuStrip.cs
- TableColumn.cs
- safemediahandle.cs
- InvalidOperationException.cs
- mactripleDES.cs
- XmlAttributeHolder.cs
- ManipulationStartedEventArgs.cs
- JoinElimination.cs
- Propagator.cs
- CustomLineCap.cs
- RayHitTestParameters.cs
- ProcessModelSection.cs
- WindowsContainer.cs
- HttpCacheVary.cs
- ColumnPropertiesGroup.cs
- StreamUpgradeProvider.cs
- PrintController.cs
- HttpInputStream.cs
- ControlPager.cs
- PublishLicense.cs
- UnsafeNativeMethods.cs
- FrameworkContentElement.cs
- Currency.cs
- StretchValidation.cs
- SafeNativeMethods.cs
- DigestComparer.cs
- StorageFunctionMapping.cs
- FontSourceCollection.cs
- KnownBoxes.cs
- ClientSession.cs
- BitmapScalingModeValidation.cs
- MarkedHighlightComponent.cs
- WindowsToolbarItemAsMenuItem.cs
- ConfigXmlAttribute.cs
- StringAnimationUsingKeyFrames.cs
- EntityDataSource.cs
- WebPartZoneDesigner.cs
- ConfigurationPropertyCollection.cs
- ModuleElement.cs
- WindowsFormsHost.cs
- ExtensionFile.cs
- ACE.cs
- ManifestSignatureInformation.cs
- XmlEncoding.cs
- DesignerSerializationVisibilityAttribute.cs
- SoapEnumAttribute.cs
- ImageClickEventArgs.cs
- SqlRemoveConstantOrderBy.cs
- AttachedPropertyBrowsableForTypeAttribute.cs
- FragmentNavigationEventArgs.cs
- DefaultEvaluationContext.cs
- BuildResult.cs
- XamlWriter.cs
- ClientRoleProvider.cs
- ChangeInterceptorAttribute.cs
- DependencyObjectCodeDomSerializer.cs
- SafeNativeMethods.cs
- MetadataCache.cs
- ResourceIDHelper.cs
- DataBinder.cs
- OdbcInfoMessageEvent.cs
- ConsoleTraceListener.cs
- MemberMaps.cs