Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / ListItemConverter.cs / 1 / ListItemConverter.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; ////// /// ListViewItemConverter is a class that can be used to convert /// ListViewItem objects from one data type to another. Access this /// class through the TypeDescriptor. /// public class ListViewItemConverter : ExpandableObjectConverter { ////// /// 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 ListViewItem) { ListViewItem item = (ListViewItem)value; ConstructorInfo ctor; // Should we use the subitem constructor? // for(int i=1; i < item.SubItems.Count; ++i) { if (item.SubItems[i].CustomStyle) { if (!String.IsNullOrEmpty(item.ImageKey)) { ctor = typeof(ListViewItem).GetConstructor(new Type[] { typeof(ListViewItem.ListViewSubItem[]), typeof(string)}); if (ctor != null) { ListViewItem.ListViewSubItem[] subItemArray = new ListViewItem.ListViewSubItem[item.SubItems.Count]; ((ICollection)item.SubItems).CopyTo(subItemArray, 0); return new InstanceDescriptor(ctor, new object[] {subItemArray, item.ImageKey}, false); } else { break; } } else { ctor = typeof(ListViewItem).GetConstructor(new Type[] { typeof(ListViewItem.ListViewSubItem[]), typeof(int)}); if (ctor != null) { ListViewItem.ListViewSubItem[] subItemArray = new ListViewItem.ListViewSubItem[item.SubItems.Count]; ((ICollection)item.SubItems).CopyTo(subItemArray, 0); return new InstanceDescriptor(ctor, new object[] {subItemArray, item.ImageIndex}, false); } else { break; } } } } // Convert SubItem array to string array // string[] subItems = new string[item.SubItems.Count]; for(int i=0; i < subItems.Length; ++i) { subItems[i] = item.SubItems[i].Text; } // ForeColor, BackColor or ItemFont set // if (item.SubItems[0].CustomStyle) { if (!String.IsNullOrEmpty(item.ImageKey)) { ctor = typeof(ListViewItem).GetConstructor(new Type[] { typeof(string[]), typeof(string), typeof(Color), typeof(Color), typeof(Font)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] { subItems, item.ImageKey, item.SubItems[0].CustomForeColor ? item.ForeColor : Color.Empty, item.SubItems[0].CustomBackColor ? item.BackColor : Color.Empty, item.SubItems[0].CustomFont ? item.Font : null }, false); } } else { ctor = typeof(ListViewItem).GetConstructor(new Type[] { typeof(string[]), typeof(int), typeof(Color), typeof(Color), typeof(Font)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] { subItems, item.ImageIndex, item.SubItems[0].CustomForeColor ? item.ForeColor : Color.Empty, item.SubItems[0].CustomBackColor ? item.BackColor : Color.Empty, item.SubItems[0].CustomFont ? item.Font : null }, false); } } } // Text // if (item.ImageIndex == -1 && String.IsNullOrEmpty(item.ImageKey) && item.SubItems.Count <= 1) { ctor = typeof(ListViewItem).GetConstructor(new Type[] {typeof(string)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] {item.Text}, false); } } // Text and Image // if (item.SubItems.Count <= 1) { if (!String.IsNullOrEmpty(item.ImageKey)) { ctor = typeof(ListViewItem).GetConstructor(new Type[] { typeof(string), typeof(string)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] {item.Text, item.ImageKey}, false); } } else { ctor = typeof(ListViewItem).GetConstructor(new Type[] { typeof(string), typeof(int)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] {item.Text, item.ImageIndex}, false); } } } // Text, Image and SubItems // if (!String.IsNullOrEmpty(item.ImageKey)) { ctor = typeof(ListViewItem).GetConstructor(new Type[] { typeof(string[]), typeof(string)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] {subItems, item.ImageKey}, false); } } else { ctor = typeof(ListViewItem).GetConstructor(new Type[] { typeof(string[]), typeof(int)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] {subItems, item.ImageIndex}, false); } } } return base.ConvertTo(context, culture, value, destinationType); } } internal class ListViewSubItemConverter : ExpandableObjectConverter { public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor)) { return true; } return base.CanConvertTo(context, destinationType); } 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 ListViewItem.ListViewSubItem) { ListViewItem.ListViewSubItem item = (ListViewItem.ListViewSubItem)value; ConstructorInfo ctor; // Subitem has custom style // if (item.CustomStyle) { ctor = typeof(ListViewItem.ListViewSubItem).GetConstructor(new Type[] { typeof(ListViewItem), typeof(string), typeof(Color), typeof(Color), typeof(Font)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] { null, item.Text, item.ForeColor, item.BackColor, item.Font}, true); } } // Otherwise, just use the text constructor // ctor = typeof(ListViewItem.ListViewSubItem).GetConstructor(new Type[] {typeof(ListViewItem), typeof(string)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] {null, item.Text}, true); } } 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.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- TextFormatterHost.cs
- OdbcDataReader.cs
- CopyNodeSetAction.cs
- HtmlInputHidden.cs
- ProcessHostConfigUtils.cs
- OdbcStatementHandle.cs
- DirectoryObjectSecurity.cs
- WebBaseEventKeyComparer.cs
- DocumentViewerConstants.cs
- Int64AnimationUsingKeyFrames.cs
- NotCondition.cs
- SqlColumnizer.cs
- DataTableExtensions.cs
- ToolStripLocationCancelEventArgs.cs
- RecognizerBase.cs
- RuntimeHelpers.cs
- ProcessModelSection.cs
- Clause.cs
- ObjectHandle.cs
- MembershipSection.cs
- ListBoxAutomationPeer.cs
- TrackingMemoryStreamFactory.cs
- StringArrayConverter.cs
- XPathQilFactory.cs
- TextComposition.cs
- HtmlContainerControl.cs
- AnimationLayer.cs
- MappingSource.cs
- SyndicationFeedFormatter.cs
- ControlParameter.cs
- PageAdapter.cs
- Subtree.cs
- CriticalHandle.cs
- SiteMapDataSourceView.cs
- SafeProcessHandle.cs
- SqlTriggerAttribute.cs
- CommandValueSerializer.cs
- VirtualDirectoryMappingCollection.cs
- PrintSchema.cs
- GeometryModel3D.cs
- TabControl.cs
- EncoderParameters.cs
- RSAPKCS1KeyExchangeFormatter.cs
- NativeMethods.cs
- WebZone.cs
- DataGridViewCellStyleContentChangedEventArgs.cs
- InputLangChangeEvent.cs
- TransformerInfo.cs
- ADMembershipProvider.cs
- HttpCapabilitiesEvaluator.cs
- AsyncDataRequest.cs
- JavaScriptString.cs
- RecordManager.cs
- SiteMapNodeItem.cs
- OdbcException.cs
- ConnectionConsumerAttribute.cs
- OdbcErrorCollection.cs
- InstanceDescriptor.cs
- IteratorDescriptor.cs
- UrlMappingsModule.cs
- DataGridViewImageColumn.cs
- SelectionListDesigner.cs
- GlobalizationSection.cs
- ErrorsHelper.cs
- RegisteredDisposeScript.cs
- TransformerInfoCollection.cs
- Substitution.cs
- HostSecurityManager.cs
- SweepDirectionValidation.cs
- ParameterElementCollection.cs
- OdbcException.cs
- WebPartEditorOkVerb.cs
- SecondaryIndexList.cs
- RSAOAEPKeyExchangeDeformatter.cs
- EncodingStreamWrapper.cs
- XamlClipboardData.cs
- HandleValueEditor.cs
- ToolboxItemFilterAttribute.cs
- NavigatorOutput.cs
- CorrelationResolver.cs
- PostBackTrigger.cs
- EditBehavior.cs
- ValueUtilsSmi.cs
- SequenceRangeCollection.cs
- DrawingAttributesDefaultValueFactory.cs
- CapabilitiesRule.cs
- FontConverter.cs
- DesignConnectionCollection.cs
- NetworkCredential.cs
- ControllableStoryboardAction.cs
- unsafenativemethodstextservices.cs
- recordstatescratchpad.cs
- ManageRequest.cs
- EditorPartChrome.cs
- VirtualPath.cs
- BufferModesCollection.cs
- HtmlTernaryTree.cs
- MaterialGroup.cs
- Internal.cs
- WebRequestModuleElement.cs