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62 lines
2.1 KiB
62 lines
2.1 KiB
5 years ago
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#if NET20 || NET30 || NET35 || !NET_4_6
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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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namespace System.Threading.Tasks
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{
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/// <summary>
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/// Provides data for the event that is raised when a faulted <see cref="System.Threading.Tasks.Task"/>'s
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/// exception goes unobserved.
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/// </summary>
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/// <remarks>
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/// The Exception property is used to examine the exception without marking it
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/// as observed, whereas the <see cref="SetObserved"/> method is used to mark the exception
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/// as observed. Marking the exception as observed prevents it from triggering exception escalation policy
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/// which, by default, terminates the process.
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/// </remarks>
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public class UnobservedTaskExceptionEventArgs : EventArgs
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{
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private readonly AggregateException _exception;
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private bool _observed;
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/// <summary>
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/// Initializes a new instance of the <see cref="UnobservedTaskExceptionEventArgs"/> class
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/// with the unobserved exception.
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/// </summary>
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/// <param name="exception">The Exception that has gone unobserved.</param>
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public UnobservedTaskExceptionEventArgs(AggregateException exception)
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{
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_exception = exception;
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}
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/// <summary>
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/// Marks the <see cref="Exception"/> as "observed," thus preventing it
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/// from triggering exception escalation policy which, by default, terminates the process.
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/// </summary>
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public void SetObserved()
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{
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_observed = true;
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}
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/// <summary>
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/// Gets whether this exception has been marked as "observed."
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/// </summary>
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public bool Observed
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{
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get { return _observed; }
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internal set { _observed = value; }
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}
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/// <summary>
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/// The Exception that went unobserved.
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/// </summary>
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public AggregateException Exception
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{
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get { return _exception; }
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}
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}
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}
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#endif
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