Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / TreeNodeConverter.cs / 1305376 / TreeNodeConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Windows.Forms { using System.Runtime.Serialization.Formatters; using System.Runtime.Remoting; using System.Runtime.InteropServices; using Microsoft.Win32; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Drawing; using System.Diagnostics; using System.Globalization; using System.Reflection; ////// /// TreeNodeConverter is a class that can be used to convert /// TreeNode objects from one data type to another. Access this /// class through the TypeDescriptor. /// public class TreeNodeConverter : TypeConverter { ////// /// 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. ////// /// Converts the given object to another type. The most common types to convert /// are to and from a string object. The default implementation will make a call /// to ToString on the object if the object is valid and if the destination /// type is string. If this cannot convert to the desitnation type, this will /// throw a NotSupportedException. /// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } if (destinationType == typeof(InstanceDescriptor) && value is TreeNode) { TreeNode node = (TreeNode)value; MemberInfo info = null; object[] args = null; if (node.ImageIndex == -1 || node.SelectedImageIndex == -1) { if (node.Nodes.Count == 0) { info = typeof(TreeNode).GetConstructor(new Type[] {typeof(string)}); args = new object[] {node.Text}; } else { info = typeof(TreeNode).GetConstructor(new Type[] {typeof(string), typeof(TreeNode[])}); TreeNode[] nodesArray = new TreeNode[node.Nodes.Count]; node.Nodes.CopyTo(nodesArray, 0); args = new object[] {node.Text, nodesArray}; } } else { if (node.Nodes.Count == 0) { info = typeof(TreeNode).GetConstructor(new Type[] { typeof(string), typeof(int), typeof(int)}); args = new object[] { node.Text, node.ImageIndex, node.SelectedImageIndex}; } else { info = typeof(TreeNode).GetConstructor(new Type[] { typeof(string), typeof(int), typeof(int), typeof(TreeNode[])}); TreeNode[] nodesArray = new TreeNode[node.Nodes.Count]; node.Nodes.CopyTo(nodesArray, 0); args = new object[] { node.Text, node.ImageIndex, node.SelectedImageIndex, nodesArray}; } } if (info != null) { return new InstanceDescriptor(info, args, false); } } return base.ConvertTo(context, culture, value, destinationType); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Windows.Forms { using System.Runtime.Serialization.Formatters; using System.Runtime.Remoting; using System.Runtime.InteropServices; using Microsoft.Win32; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Drawing; using System.Diagnostics; using System.Globalization; using System.Reflection; ////// /// TreeNodeConverter is a class that can be used to convert /// TreeNode objects from one data type to another. Access this /// class through the TypeDescriptor. /// public class TreeNodeConverter : TypeConverter { ////// /// 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. ////// /// Converts the given object to another type. The most common types to convert /// are to and from a string object. The default implementation will make a call /// to ToString on the object if the object is valid and if the destination /// type is string. If this cannot convert to the desitnation type, this will /// throw a NotSupportedException. /// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } if (destinationType == typeof(InstanceDescriptor) && value is TreeNode) { TreeNode node = (TreeNode)value; MemberInfo info = null; object[] args = null; if (node.ImageIndex == -1 || node.SelectedImageIndex == -1) { if (node.Nodes.Count == 0) { info = typeof(TreeNode).GetConstructor(new Type[] {typeof(string)}); args = new object[] {node.Text}; } else { info = typeof(TreeNode).GetConstructor(new Type[] {typeof(string), typeof(TreeNode[])}); TreeNode[] nodesArray = new TreeNode[node.Nodes.Count]; node.Nodes.CopyTo(nodesArray, 0); args = new object[] {node.Text, nodesArray}; } } else { if (node.Nodes.Count == 0) { info = typeof(TreeNode).GetConstructor(new Type[] { typeof(string), typeof(int), typeof(int)}); args = new object[] { node.Text, node.ImageIndex, node.SelectedImageIndex}; } else { info = typeof(TreeNode).GetConstructor(new Type[] { typeof(string), typeof(int), typeof(int), typeof(TreeNode[])}); TreeNode[] nodesArray = new TreeNode[node.Nodes.Count]; node.Nodes.CopyTo(nodesArray, 0); args = new object[] { node.Text, node.ImageIndex, node.SelectedImageIndex, nodesArray}; } } if (info != null) { return new InstanceDescriptor(info, args, false); } } return base.ConvertTo(context, culture, value, destinationType); } } } // 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
- Profiler.cs
- SamlDoNotCacheCondition.cs
- ConnectivityStatus.cs
- TreeNodeClickEventArgs.cs
- DragDrop.cs
- RenderData.cs
- WorkflowEventArgs.cs
- XmlSchemaAttributeGroupRef.cs
- AppDomainUnloadedException.cs
- DateTimeConverter2.cs
- PnrpPermission.cs
- ModelItemDictionaryImpl.cs
- CollectionViewProxy.cs
- DependencyObjectType.cs
- RequestCacheValidator.cs
- SqlBuilder.cs
- DuplicateWaitObjectException.cs
- SafeFileMapViewHandle.cs
- WebPartUtil.cs
- MulticastIPAddressInformationCollection.cs
- DirectoryNotFoundException.cs
- TreeViewImageKeyConverter.cs
- ParallelTimeline.cs
- rsa.cs
- TranslateTransform.cs
- CatalogZone.cs
- ModelFunctionTypeElement.cs
- OptimalBreakSession.cs
- ResourceDefaultValueAttribute.cs
- ArgIterator.cs
- ParserOptions.cs
- MustUnderstandSoapException.cs
- InputGestureCollection.cs
- SpecialNameAttribute.cs
- Container.cs
- TreeView.cs
- XPathCompileException.cs
- MasterPageParser.cs
- DataGridDefaultColumnWidthTypeConverter.cs
- FloaterParaClient.cs
- ZipIOExtraFieldElement.cs
- DataRecordInternal.cs
- XamlClipboardData.cs
- NetworkInterface.cs
- FileSystemEventArgs.cs
- WebPageTraceListener.cs
- DisableDpiAwarenessAttribute.cs
- UInt32.cs
- HostingEnvironmentSection.cs
- CurrentTimeZone.cs
- PointLight.cs
- _FtpDataStream.cs
- OLEDB_Enum.cs
- BitmapSource.cs
- DataControlCommands.cs
- x509utils.cs
- AdRotator.cs
- MailWebEventProvider.cs
- OdbcConnectionPoolProviderInfo.cs
- DataGridTemplateColumn.cs
- CharAnimationUsingKeyFrames.cs
- SpecialNameAttribute.cs
- WorkflowCreationContext.cs
- StorageEntityContainerMapping.cs
- LookupBindingPropertiesAttribute.cs
- DataBinder.cs
- ValidatorCollection.cs
- Match.cs
- SafeLibraryHandle.cs
- GroupBoxDesigner.cs
- SqlGenerator.cs
- Frame.cs
- Image.cs
- NonParentingControl.cs
- GlyphElement.cs
- XmlSchemaInfo.cs
- Lease.cs
- InsufficientMemoryException.cs
- ButtonBaseAdapter.cs
- Model3DGroup.cs
- DataBoundControlHelper.cs
- DesigntimeLicenseContext.cs
- TypeConverterHelper.cs
- SqlGenericUtil.cs
- RemotingConfiguration.cs
- safesecurityhelperavalon.cs
- Formatter.cs
- DefaultHttpHandler.cs
- OleDragDropHandler.cs
- MetadataUtil.cs
- SymmetricKey.cs
- CreateUserWizardStep.cs
- RelatedCurrencyManager.cs
- RemotingAttributes.cs
- ChangeDirector.cs
- ExceptionAggregator.cs
- TextEditorCharacters.cs
- ToolboxControl.cs
- Oid.cs
- DataObjectSettingDataEventArgs.cs