Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / CompMod / System / ComponentModel / ReferenceConverter.cs / 1 / ReferenceConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.ComponentModel { using Microsoft.Win32; using System.Collections; using System.ComponentModel.Design; using System.Diagnostics; using System.Globalization; using System.Runtime.InteropServices; using System.Runtime.Remoting; using System.Runtime.Serialization.Formatters; using System.Security.Permissions; ////// [HostProtection(SharedState = true)] public class ReferenceConverter : TypeConverter { private static readonly string none = SR.GetString(SR.toStringNone); private Type type; ///Provides a type converter to convert object references to and from various /// other representations. ////// public ReferenceConverter(Type type) { this.type = type; } ////// Initializes a new instance of the ///class. /// /// /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string) && context != null) { return true; } return base.CanConvertFrom(context, sourceType); } ///Gets a value indicating whether this converter can convert an object in the /// given source type to a reference object using the specified context. ////// /// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value is string) { string text = ((string)value).Trim(); if (!String.Equals(text, none) && context != null) { // Try the reference service first. // IReferenceService refSvc = (IReferenceService)context.GetService(typeof(IReferenceService)); if (refSvc != null) { object obj = refSvc.GetReference(text); if (obj != null) { return obj; } } // Now try IContainer // IContainer cont = context.Container; if (cont != null) { object obj = cont.Components[text]; if (obj != null) { return obj; } } } return null; } return base.ConvertFrom(context, culture, value); } ///Converts the given object to the reference type. ////// /// 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) { // Try the reference service first. // if (context != null) { IReferenceService refSvc = (IReferenceService)context.GetService(typeof(IReferenceService)); if (refSvc != null) { string name = refSvc.GetName(value); if (name != null) { return name; } } } // Now see if this is an IComponent. // if (!Marshal.IsComObject(value) && value is IComponent) { IComponent comp = (IComponent)value; ISite site = comp.Site; if (site != null) { string name = site.Name; if (name != null) { return name; } } } // Couldn't find it. return String.Empty; } return none; } return base.ConvertTo(context, culture, value, destinationType); } ///Converts the given value object to the reference type /// using the specified context and arguments. ////// /// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { object[] components = null; if (context != null) { ArrayList list = new ArrayList(); list.Add(null); // Try the reference service first. // IReferenceService refSvc = (IReferenceService)context.GetService(typeof(IReferenceService)); if (refSvc != null) { object[] objs = refSvc.GetReferences(type); int count = objs.Length; for (int i = 0; i < count; i++) { if (IsValueAllowed(context, objs[i])) list.Add(objs[i]); } } else { // Now try IContainer. // IContainer cont = context.Container; if (cont != null) { ComponentCollection objs = cont.Components; foreach(IComponent obj in objs) { if (obj != null && type.IsInstanceOfType(obj) && IsValueAllowed(context, obj)) { list.Add(obj); } } } } components = list.ToArray(); Array.Sort(components, 0, components.Length, new ReferenceComparer(this)); } return new StandardValuesCollection(components); } ///Gets a collection of standard values for the reference data type. ////// /// 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; } ///Gets a value indicating whether this object supports a standard set of values /// that can be picked from a list. ////// protected virtual bool IsValueAllowed(ITypeDescriptorContext context, object value) { return true; } ///Gets a value indicating whether a particular value can be added to /// the standard values collection. ////// IComparer object used for sorting references /// private class ReferenceComparer : IComparer { private ReferenceConverter converter; public ReferenceComparer(ReferenceConverter converter) { this.converter = converter; } public int Compare(object item1, object item2) { String itemName1 = converter.ConvertToString(item1); String itemName2 = converter.ConvertToString(item2); return string.Compare(itemName1, itemName2, false, CultureInfo.InvariantCulture); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.ComponentModel { using Microsoft.Win32; using System.Collections; using System.ComponentModel.Design; using System.Diagnostics; using System.Globalization; using System.Runtime.InteropServices; using System.Runtime.Remoting; using System.Runtime.Serialization.Formatters; using System.Security.Permissions; ////// [HostProtection(SharedState = true)] public class ReferenceConverter : TypeConverter { private static readonly string none = SR.GetString(SR.toStringNone); private Type type; ///Provides a type converter to convert object references to and from various /// other representations. ////// public ReferenceConverter(Type type) { this.type = type; } ////// Initializes a new instance of the ///class. /// /// /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string) && context != null) { return true; } return base.CanConvertFrom(context, sourceType); } ///Gets a value indicating whether this converter can convert an object in the /// given source type to a reference object using the specified context. ////// /// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value is string) { string text = ((string)value).Trim(); if (!String.Equals(text, none) && context != null) { // Try the reference service first. // IReferenceService refSvc = (IReferenceService)context.GetService(typeof(IReferenceService)); if (refSvc != null) { object obj = refSvc.GetReference(text); if (obj != null) { return obj; } } // Now try IContainer // IContainer cont = context.Container; if (cont != null) { object obj = cont.Components[text]; if (obj != null) { return obj; } } } return null; } return base.ConvertFrom(context, culture, value); } ///Converts the given object to the reference type. ////// /// 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) { // Try the reference service first. // if (context != null) { IReferenceService refSvc = (IReferenceService)context.GetService(typeof(IReferenceService)); if (refSvc != null) { string name = refSvc.GetName(value); if (name != null) { return name; } } } // Now see if this is an IComponent. // if (!Marshal.IsComObject(value) && value is IComponent) { IComponent comp = (IComponent)value; ISite site = comp.Site; if (site != null) { string name = site.Name; if (name != null) { return name; } } } // Couldn't find it. return String.Empty; } return none; } return base.ConvertTo(context, culture, value, destinationType); } ///Converts the given value object to the reference type /// using the specified context and arguments. ////// /// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { object[] components = null; if (context != null) { ArrayList list = new ArrayList(); list.Add(null); // Try the reference service first. // IReferenceService refSvc = (IReferenceService)context.GetService(typeof(IReferenceService)); if (refSvc != null) { object[] objs = refSvc.GetReferences(type); int count = objs.Length; for (int i = 0; i < count; i++) { if (IsValueAllowed(context, objs[i])) list.Add(objs[i]); } } else { // Now try IContainer. // IContainer cont = context.Container; if (cont != null) { ComponentCollection objs = cont.Components; foreach(IComponent obj in objs) { if (obj != null && type.IsInstanceOfType(obj) && IsValueAllowed(context, obj)) { list.Add(obj); } } } } components = list.ToArray(); Array.Sort(components, 0, components.Length, new ReferenceComparer(this)); } return new StandardValuesCollection(components); } ///Gets a collection of standard values for the reference data type. ////// /// 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; } ///Gets a value indicating whether this object supports a standard set of values /// that can be picked from a list. ////// protected virtual bool IsValueAllowed(ITypeDescriptorContext context, object value) { return true; } ///Gets a value indicating whether a particular value can be added to /// the standard values collection. ////// IComparer object used for sorting references /// private class ReferenceComparer : IComparer { private ReferenceConverter converter; public ReferenceComparer(ReferenceConverter converter) { this.converter = converter; } public int Compare(object item1, object item2) { String itemName1 = converter.ConvertToString(item1); String itemName2 = converter.ConvertToString(item2); return string.Compare(itemName1, itemName2, false, CultureInfo.InvariantCulture); } } } } // 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
- MouseCaptureWithinProperty.cs
- Wizard.cs
- SetterBase.cs
- Focus.cs
- RequestStatusBarUpdateEventArgs.cs
- SoapProcessingBehavior.cs
- ConvertersCollection.cs
- _AutoWebProxyScriptHelper.cs
- GridToolTip.cs
- TypeUnloadedException.cs
- StylusPointProperty.cs
- DataException.cs
- PixelFormats.cs
- CallbackValidatorAttribute.cs
- BaseWebProxyFinder.cs
- TableCell.cs
- OverflowException.cs
- InvariantComparer.cs
- ElementHost.cs
- CommandHelper.cs
- BinaryMessageEncoder.cs
- bindurihelper.cs
- RunInstallerAttribute.cs
- XamlUtilities.cs
- AbsoluteQuery.cs
- UInt16Storage.cs
- UIElementHelper.cs
- ItemsControlAutomationPeer.cs
- _Events.cs
- PassportAuthenticationEventArgs.cs
- EntityTypeBase.cs
- TeredoHelper.cs
- ColumnMap.cs
- SessionPageStateSection.cs
- BamlLocalizationDictionary.cs
- parserscommon.cs
- TemplateManager.cs
- TypeInitializationException.cs
- FamilyMap.cs
- NotifyCollectionChangedEventArgs.cs
- RemotingSurrogateSelector.cs
- ContextStaticAttribute.cs
- PublisherIdentityPermission.cs
- DesignTimeTemplateParser.cs
- SortedSet.cs
- RuntimeArgumentHandle.cs
- Help.cs
- CompilerResults.cs
- AuthenticatingEventArgs.cs
- Transform.cs
- WebMessageEncodingBindingElement.cs
- EmptyEnumerable.cs
- AsymmetricKeyExchangeFormatter.cs
- CompModSwitches.cs
- BulletedList.cs
- ResourceSetExpression.cs
- SequenceDesigner.cs
- XmlDownloadManager.cs
- WebZone.cs
- SmiMetaData.cs
- IndexedString.cs
- KeyEvent.cs
- SourceFileBuildProvider.cs
- BitmapImage.cs
- OperatingSystem.cs
- EntityParameter.cs
- DbConnectionOptions.cs
- WsatServiceCertificate.cs
- SymmetricAlgorithm.cs
- AliasExpr.cs
- CheckedListBox.cs
- ViewCellSlot.cs
- MarkupWriter.cs
- FontDialog.cs
- CrossContextChannel.cs
- OdbcCommandBuilder.cs
- ScalarType.cs
- SchemaImporterExtensionElementCollection.cs
- CodeSubDirectoriesCollection.cs
- TrimSurroundingWhitespaceAttribute.cs
- TrackingMemoryStream.cs
- sqlcontext.cs
- Pen.cs
- MarkupWriter.cs
- NotificationContext.cs
- SettingsBase.cs
- PropertySegmentSerializer.cs
- MobileUITypeEditor.cs
- DayRenderEvent.cs
- SynchronizedRandom.cs
- FormsAuthenticationEventArgs.cs
- WebPartAddingEventArgs.cs
- AccessDataSourceView.cs
- UIElement3DAutomationPeer.cs
- BCLDebug.cs
- FastEncoderWindow.cs
- Events.cs
- TypeNameHelper.cs
- TypeForwardedFromAttribute.cs
- WpfKnownMemberInvoker.cs