Task(TResult) Constructor (Func(Object, TResult), Object, CancellationToken)

Task<TResult> Constructor (Func<Object, TResult>, Object, CancellationToken)


Initializes a new Task<TResult> with the specified action, state, and options.

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

public Task(
	Func<object, TResult> function,
	object state,
	CancellationToken cancellationToken


Type: System.Func<Object, TResult>

The delegate that represents the code to execute in the task. When the function has completed, the task's Result property will be set to return the result value of the function.

Type: System.Object

An object representing data to be used by the function.

Type: System.Threading.CancellationToken

The CancellationToken to be assigned to the new task.

Exception Condition

The CancellationTokenSource that created cancellationToken has already been disposed.


The function argument is null.

Rather than calling this constructor, the most common way to instantiate a Task<TResult> object and launch a task is by calling the static TaskFactory<TResult>.StartNew(Func<Object, TResult>, Object, CancellationToken) method. The only advantage offered by this constructor is that it allows object instantiation to be separated from task invocation.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 5.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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