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TaskFactory<TResult>.FromAsync<TArg1, TArg2> Method (Func<TArg1, TArg2, AsyncCallback, Object, IAsyncResult>, Func<IAsyncResult, TResult>, TArg1, TArg2, Object)

Creates a task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.

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

public Task<TResult> FromAsync<TArg1, TArg2>(
	Func<TArg1, TArg2, AsyncCallback, Object, IAsyncResult> beginMethod,
	Func<IAsyncResult, TResult> endMethod,
	TArg1 arg1,
	TArg2 arg2,
	Object state
)

Type Parameters

TArg1

The type of the second argument passed to beginMethod delegate.

TArg2

The type of the first argument passed to the beginMethod delegate.

Parameters

beginMethod
Type: System.Func<TArg1, TArg2, AsyncCallback, Object, IAsyncResult>
The delegate that begins the asynchronous operation.
endMethod
Type: System.Func<IAsyncResult, TResult>
The delegate that ends the asynchronous operation.
arg1
Type: TArg1
The first argument passed to the beginMethod delegate.
arg2
Type: TArg2
The second argument passed to the beginMethod delegate.
state
Type: System.Object
An object containing data to be used by the beginMethod delegate.

Return Value

Type: System.Threading.Tasks.Task<TResult>
The created task that represents the asynchronous operation.

ExceptionCondition
ArgumentNullException

The beginMethod argument is null.

-or-

The endMethod argument is null.

This method throws any exceptions thrown by the beginMethod. Exceptions for endmethod are thrown when waiting on the returned task.

Windows Phone OS

Supported in: 8.1, 8.0

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