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
- Visitor.cs
- OdbcCommandBuilder.cs
- TabItemAutomationPeer.cs
- SQLDouble.cs
- SmiXetterAccessMap.cs
- UserMapPath.cs
- RewritingPass.cs
- ConsoleKeyInfo.cs
- KeyValueSerializer.cs
- ComboBoxHelper.cs
- RadioButtonFlatAdapter.cs
- unsafeIndexingFilterStream.cs
- PolicyException.cs
- AnnotationResourceChangedEventArgs.cs
- ModelPropertyCollectionImpl.cs
- SystemEvents.cs
- InlineCollection.cs
- NetworkInformationException.cs
- PolygonHotSpot.cs
- ProviderUtil.cs
- ReceiveActivity.cs
- ToolBar.cs
- StackSpiller.Temps.cs
- PathParser.cs
- ToolboxItemCollection.cs
- QuaternionConverter.cs
- _ListenerResponseStream.cs
- CompilerWrapper.cs
- DataServiceEntityAttribute.cs
- FileDialog.cs
- Operand.cs
- SqlIdentifier.cs
- NamedServiceModelExtensionCollectionElement.cs
- BuildProviderAppliesToAttribute.cs
- Expressions.cs
- SHA512.cs
- CanonicalizationDriver.cs
- TextCompositionManager.cs
- PrintEvent.cs
- SudsCommon.cs
- ComponentCollection.cs
- DefaultSection.cs
- OrderedDictionary.cs
- MethodImplAttribute.cs
- QilTypeChecker.cs
- StrongTypingException.cs
- ListItem.cs
- EmptyControlCollection.cs
- InternalConfirm.cs
- DataGridCommandEventArgs.cs
- StandardCommands.cs
- SkinBuilder.cs
- TextViewBase.cs
- ToolStripPanelSelectionBehavior.cs
- CacheEntry.cs
- Clause.cs
- Policy.cs
- PropagatorResult.cs
- MsmqQueue.cs
- UnsafeNativeMethods.cs
- AuthorizationBehavior.cs
- SqlGatherConsumedAliases.cs
- CommandPlan.cs
- XmlCodeExporter.cs
- IndicCharClassifier.cs
- TabControlCancelEvent.cs
- TextRangeProviderWrapper.cs
- BitmapEffectDrawingContextState.cs
- OdbcTransaction.cs
- RoleGroup.cs
- MatrixTransform3D.cs
- Int64AnimationUsingKeyFrames.cs
- ApplicationServiceManager.cs
- SourceLocationProvider.cs
- HttpContextWrapper.cs
- ToolStripRenderer.cs
- AssemblyCollection.cs
- WebServiceMethodData.cs
- DataGridViewRowHeaderCell.cs
- ObjectKeyFrameCollection.cs
- MarkupCompiler.cs
- DBDataPermission.cs
- SourceLineInfo.cs
- Source.cs
- LineSegment.cs
- ComponentDispatcher.cs
- ScrollBar.cs
- TabControlCancelEvent.cs
- ConfigurationManagerInternalFactory.cs
- ListViewItem.cs
- ExecutionEngineException.cs
- AttachmentCollection.cs
- WebPartZoneBase.cs
- QuaternionKeyFrameCollection.cs
- XmlBinaryReaderSession.cs
- Adorner.cs
- AutoCompleteStringCollection.cs
- Keyboard.cs
- Claim.cs
- JoinSymbol.cs