FromAsync(TArg1, TArg2, TArg3, TResult) Method (Func_(TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult), Func(IAsyncResult, TResult), TArg1, TArg2, TArg3, Object)

Task Parallel System.Threading

previous page next page

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: System.Threading (in System.Threading.dll)

Syntax

Visual Basic (Declaration)
Public Function FromAsync(Of TArg1, TArg2, TArg3, TResult) ( _ beginMethod As Func_(Of TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult), _ endMethod As Func(Of IAsyncResult, TResult), _ arg1 As TArg1, _ arg2 As TArg2, _ arg3 As TArg3, _ state As Object _ ) As Task(Of TResult)

Visual Basic (Declaration)

Public Function FromAsync(Of TArg1, TArg2, TArg3, TResult) ( _
	beginMethod As Func_(Of TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult), _
	endMethod As Func(Of IAsyncResult, TResult), _
	arg1 As TArg1, _
	arg2 As TArg2, _
	arg3 As TArg3, _
	state As Object _
) As Task(Of TResult)

C#
public Task<TResult> FromAsync<TArg1, TArg2, TArg3, TResult>( Func_<TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult> beginMethod, Func<IAsyncResult, TResult> endMethod, TArg1 arg1, TArg2 arg2, TArg3 arg3, Object state )

public Task<TResult> FromAsync<TArg1, TArg2, TArg3, TResult>(
	Func_<TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult> beginMethod,
	Func<IAsyncResult, TResult> endMethod,
	TArg1 arg1,
	TArg2 arg2,
	TArg3 arg3,
	Object state
)

Parameters

beginMethod: Type: System..::.Func_<(Of <(TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult>)>)
The delegate that begins the asynchronous operation.

endMethod: Type: System..::.Func<(Of <(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.

arg3: Type: TArg3
The third argument passed to the beginMethod delegate.

state: Type: System..::.Object
An object containing data to be used by the beginMethod delegate.

Type Parameters

TArg1: The type of the first argument passed to the beginMethod delegate.
TArg2: The type of the second argument passed to beginMethod delegate.
TArg3: The type of the third argument passed to beginMethod delegate.
TResult: The type of the result available through the Task.

Return Value

The created Task that represents the asynchronous operation.

Remarks

This method throws any exceptions thrown by the beginMethod.

Exceptions

Exception	Condition
System..::.ArgumentNullException	The exception that is thrown when the beginMethod argument is null.
System..::.ArgumentNullException	The exception that is thrown when the endMethod argument is null.