Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / WinForms / Managed / System / WinForms / TreeNodeConverter.cs / 1 / 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
- WorkflowOperationInvoker.cs
- GreenMethods.cs
- XmlDownloadManager.cs
- CreationContext.cs
- HtmlTableRow.cs
- HwndHost.cs
- UnsafeNativeMethods.cs
- DeviceSpecificChoiceCollection.cs
- PageContentAsyncResult.cs
- UIAgentInitializationException.cs
- MachineKey.cs
- XsltSettings.cs
- SynchronizedDisposablePool.cs
- MappingMetadataHelper.cs
- DbConnectionOptions.cs
- SingleStorage.cs
- WebPartConnectionsCancelVerb.cs
- ThemeDirectoryCompiler.cs
- AnnotationObservableCollection.cs
- FontCacheLogic.cs
- DragEventArgs.cs
- BatchParser.cs
- SelectionWordBreaker.cs
- ScriptResourceHandler.cs
- PlaceHolder.cs
- EdmMember.cs
- ToolStripOverflowButton.cs
- DataGridViewIntLinkedList.cs
- CellPartitioner.cs
- TextProviderWrapper.cs
- XPathMultyIterator.cs
- NonceCache.cs
- StreamInfo.cs
- NamedPipeDuplicateContext.cs
- XmlSchemaDatatype.cs
- SessionParameter.cs
- HtmlImage.cs
- DataSourceSerializationException.cs
- DocumentViewerBaseAutomationPeer.cs
- StylusDevice.cs
- LicFileLicenseProvider.cs
- BreadCrumbTextConverter.cs
- ModuleBuilderData.cs
- XmlSchemaDatatype.cs
- SqlCacheDependency.cs
- TraceFilter.cs
- ClientUrlResolverWrapper.cs
- XmlResolver.cs
- CodeCommentStatement.cs
- CompositeControl.cs
- ConfigurationManagerInternalFactory.cs
- BookmarkResumptionRecord.cs
- ToolBarButtonClickEvent.cs
- ListViewAutomationPeer.cs
- CodeConditionStatement.cs
- ImportCatalogPart.cs
- HtmlForm.cs
- SystemIPv6InterfaceProperties.cs
- While.cs
- ConstructorBuilder.cs
- TextureBrush.cs
- SqlAggregateChecker.cs
- TypeDescriptorFilterService.cs
- ConfigurationSettings.cs
- PersonalizationDictionary.cs
- DataGridViewAutoSizeColumnsModeEventArgs.cs
- listitem.cs
- PeerTransportListenAddressConverter.cs
- XhtmlBasicListAdapter.cs
- ClientRoleProvider.cs
- ExpressionCopier.cs
- SqlDataSourceStatusEventArgs.cs
- LineBreak.cs
- LocationSectionRecord.cs
- CodeCastExpression.cs
- XmlChildNodes.cs
- ItemsControlAutomationPeer.cs
- SecurityRuntime.cs
- HashSetDebugView.cs
- FormViewUpdateEventArgs.cs
- FileLoadException.cs
- JournalNavigationScope.cs
- UserInitiatedNavigationPermission.cs
- SectionUpdates.cs
- BitStack.cs
- XmlnsDictionary.cs
- _Semaphore.cs
- ColumnCollection.cs
- mactripleDES.cs
- FileInfo.cs
- FormConverter.cs
- SchemaCompiler.cs
- DocumentGridContextMenu.cs
- SerialErrors.cs
- SmiEventSink.cs
- StatusBar.cs
- WebPartAuthorizationEventArgs.cs
- storagemappingitemcollection.viewdictionary.cs
- HtmlLinkAdapter.cs
- FragmentQueryKB.cs