Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Base / System / Windows / Threading / DispatcherExceptionEventArgs.cs / 1305600 / DispatcherExceptionEventArgs.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: Arguments for the events that convey an exception that was // raised while executing code via the Dispatcher. // // History: // 07/22/2003 : KenLai - Created // 05/25/2005 : WeibZ - Rename it // //--------------------------------------------------------------------------- using System.Diagnostics; using System; namespace System.Windows.Threading { ////// Arguments for the events that convey an exception that was raised /// while executing code via the dispatcher. /// public sealed class DispatcherUnhandledExceptionEventArgs : DispatcherEventArgs { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- // Initialize a new event argument. internal DispatcherUnhandledExceptionEventArgs(Dispatcher dispatcher) : base(dispatcher) { } //------------------------------------------------------ // // Public Properties // //----------------------------------------------------- ////// The exception that was raised while executing code via the /// dispatcher. /// public Exception Exception { get { return _exception; } } ////// Whether or not the exception event has been handled. /// Other handlers should respect this field, and not display any /// UI in response to being notified. Passive responses (such as /// logging) can still be done. /// If no handler sets this value to true, default UI will be shown. /// public bool Handled { get { return _handled; } set { // Only allow to be set true. if (value == true) { _handled = value; } } } //------------------------------------------------------ // // Internal Methods // //------------------------------------------------------ ////// Initialize the preallocated args class for use. /// ////// This method MUST NOT FAIL because it is called from an exception /// handler: do not do any heavy lifting or allocate more memory. /// This initialization step is separated from the constructor /// precisely because we wanted to preallocate the memory and avoid /// hitting a secondary exception in the out-of-memory case. /// /// /// The exception that was raised while executing code via the /// dispatcher /// /// /// Whether or not the exception has been handled /// internal void Initialize(Exception exception, bool handled) { Debug.Assert(exception != null); _exception = exception; _handled = handled; } //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ private Exception _exception; private bool _handled; } ////// Delegate for the events that convey the state of the UiConext /// in response to various actions that involve items. /// public delegate void DispatcherUnhandledExceptionEventHandler(object sender, DispatcherUnhandledExceptionEventArgs e); } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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