TaskFactory<TResult>.FromAsync<TArg1, TArg2, TArg3> Method (Func<TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult>, Func<IAsyncResult, TResult>, TArg1, TArg2, TArg3, Object, TaskCreationOptions)
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Creates a Task<TResult> 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)
Syntax
'Declaration
Public Function FromAsync(Of TArg1, TArg2, TArg3) ( _
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, _
creationOptions As TaskCreationOptions _
) As Task(Of TResult)
public Task<TResult> FromAsync<TArg1, TArg2, TArg3>(
Func<TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult> beginMethod,
Func<IAsyncResult, TResult> endMethod,
TArg1 arg1,
TArg2 arg2,
TArg3 arg3,
Object state,
TaskCreationOptions creationOptions
)
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.
Parameters
- beginMethod
Type: System.Func<TArg1, TArg2, TArg3, 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.
- 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.
- creationOptions
Type: System.Threading.Tasks.TaskCreationOptions
The TaskCreationOptions value that controls the behavior of the created Task<TResult>.
Return Value
Type: System.Threading.Tasks.Task<TResult>
The created Task<TResult> that represents the asynchronous operation.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | The exception that is thrown when the beginMethod argument is null. -or- The exception that is thrown when the endMethod argument is null. |
| ArgumentOutOfRangeException | The exception that is thrown when the creationOptions argument specifies an invalid TaskCreationOptions value. |
Remarks
This method throws any exceptions thrown by the beginMethod. Exceptions for endmethod are thrown when waiting on the returned task.
Version Information
Silverlight
Supported in: 5
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
See Also