Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Services / Messaging / System / Messaging / Design / QueuePathEditor.cs / 1305376 / QueuePathEditor.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Messaging.Design { using System; using System.Drawing; using System.Drawing.Design; using System.Windows.Forms; using System.Windows.Forms.ComponentModel; using System.Windows.Forms.Design; using System.ComponentModel; using System.ComponentModel.Design; using System.Messaging; ////// /// // permissions demanded by parent class [System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.LinkDemand, Name="FullTrust")] [System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.InheritanceDemand, Name="FullTrust")] public class QueuePathEditor : UITypeEditor { ///[To be supplied.] ////// /// Edits the given object value using the editor style provided by /// GetEditorStyle. A service provider is provided so that any /// required editing services can be obtained. /// public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value) { if (provider != null) { IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService)); if (edSvc != null) { QueuePathDialog dialog = new QueuePathDialog(provider); MessageQueue queue = null; if (value is MessageQueue) queue = (MessageQueue)value; else if (value is string) queue = new MessageQueue((string)value); else if (value != null) return value; if (queue != null) dialog.SelectQueue(queue); IDesignerHost host = (IDesignerHost)provider.GetService(typeof(IDesignerHost)); DesignerTransaction trans = null; if (host != null) trans = host.CreateTransaction(); try { if ((context == null || context.OnComponentChanging()) && edSvc.ShowDialog(dialog) == DialogResult.OK) { if (dialog.Path != String.Empty) { if (context.Instance is MessageQueue || context.Instance is MessageQueueInstaller) value = dialog.Path; else { value = MessageQueueConverter.GetFromCache(dialog.Path); if (value == null) { value = new MessageQueue(dialog.Path); MessageQueueConverter.AddToCache((MessageQueue)value); if (context != null) context.Container.Add((IComponent)value); } } context.OnComponentChanged(); } } } finally { if (trans != null) { trans.Commit(); } } } } return value; } ////// /// Retrieves the editing style of the Edit method. If the method /// is not supported, this will return None. /// public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context) { return UITypeEditorEditStyle.Modal; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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