TaskScheduler Class
Represents an object that handles the low-level work of queuing tasks onto threads.
Assembly: mscorlib (in mscorlib.dll)
The TaskScheduler type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() | Current | Gets the TaskScheduler associated with the currently executing task. |
![]() ![]() | Default | Gets the default TaskScheduler instance that is provided by the .NET Framework. |
![]() | Id | Gets the unique ID for this TaskScheduler. |
![]() | MaximumConcurrencyLevel | Indicates the maximum concurrency level this TaskScheduler is able to support. |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Frees all resources associated with this scheduler. (Overrides Object::Finalize().) |
![]() ![]() | FromCurrentSynchronizationContext | Creates a TaskScheduler associated with the current System.Threading::SynchronizationContext. |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetScheduledTasks | For debugger support only, generates an enumerable of Task instances currently queued to the scheduler waiting to be executed. |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | QueueTask | Queues a Task to the scheduler. |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
![]() | TryDequeue | Attempts to dequeue a Task that was previously queued to this scheduler. |
![]() | TryExecuteTask | Attempts to execute the provided Task on this scheduler. |
![]() | TryExecuteTaskInline | Determines whether the provided Task can be executed synchronously in this call, and if it can, executes it. |
| Name | Description | |
|---|---|---|
![]() ![]() | UnobservedTaskException | Occurs when a faulted Task's unobserved exception is about to trigger exception escalation policy, which, by default, would terminate the process. |
TaskScheduler acts as the extension point for all pluggable scheduling logic. This includes mechanisms such as how to schedule a task for execution, and how scheduled tasks should be exposed to debuggers.
For more information and code examples, see Task Schedulers.
Several sample task schedulers are available on Code Gallery: Samples for Parallel Programming with the .NET Framework 4.
Note |
|---|
The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: Synchronization | ExternalThreading. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes. |
The following example is taken from the Parallel Extensions Samples on the MSDN Code Gallery Web site.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.





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