UnobservedTaskExceptionEventArgs Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Provides data for the event that is raised when a faulted Task's exception goes unobserved.

Inheritance Hierarchy


Namespace:  System.Threading.Tasks
Assembly:  mscorlib (in mscorlib.dll)


Public Class UnobservedTaskExceptionEventArgs _
    Inherits EventArgs
public class UnobservedTaskExceptionEventArgs : EventArgs

The UnobservedTaskExceptionEventArgs type exposes the following members.


  Name Description
Public method UnobservedTaskExceptionEventArgs Initializes a new instance of the UnobservedTaskExceptionEventArgs class with the unobserved exception.



  Name Description
Public property Exception The Exception that went unobserved.
Public property Observed Gets whether this exception has been marked as "observed."



  Name Description
Public method Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public method GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method SetObserved Marks the Exception as "observed," thus preventing it from triggering exception escalation policy which, by default, terminates the process.
Public method ToString Returns a string that represents the current object. (Inherited from Object.)



The Exception property is used to examine the exception without marking it as observed, whereas the SetObserved method is used to mark the exception as observed. Marking the exception as observed prevents it from triggering exception escalation policy which, by default, terminates the process.

Version Information


Supported in: 5


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.