แก้ไข

แชร์ผ่าน

TaskFactory<TResult>.FromAsync Method

  • Reference

Definition

Namespace:
System.Threading.Tasks
Assembly:
System.Threading.Tasks.dll
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll

Creates a task instance.

Overloads

FromAsync(IAsyncResult, Func<IAsyncResult,TResult>)

Creates a task that executes an end method function when a specified IAsyncResult completes.
FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, Object)

Creates a task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
FromAsync(IAsyncResult, Func<IAsyncResult,TResult>, TaskCreationOptions)

Creates a task that executes an end method function when a specified IAsyncResult completes.
FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, Object, TaskCreationOptions)

Creates a task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
FromAsync(IAsyncResult, Func<IAsyncResult,TResult>, TaskCreationOptions, TaskScheduler)

Creates a task that executes an end method function when a specified IAsyncResult completes.
FromAsync<TArg1,TArg2,TArg3>(Func<TArg1,TArg2,TArg3,AsyncCallback, Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, TArg3, Object, TaskCreationOptions)

Creates a task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
FromAsync<TArg1,TArg2,TArg3>(Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, TArg3, Object)

Creates a task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
FromAsync<TArg1,TArg2>(Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, Object, TaskCreationOptions)

Creates a task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
FromAsync<TArg1,TArg2>(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.
FromAsync<TArg1>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, Object)

Creates a task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
FromAsync<TArg1>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, Object, TaskCreationOptions)

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

FromAsync(IAsyncResult, Func<IAsyncResult,TResult>)

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

Creates a task that executes an end method function when a specified IAsyncResult completes.

public:
 System::Threading::Tasks::Task<TResult> ^ FromAsync(IAsyncResult ^ asyncResult, Func<IAsyncResult ^, TResult> ^ endMethod);
public System.Threading.Tasks.Task<TResult> FromAsync (IAsyncResult asyncResult, Func<IAsyncResult,TResult> endMethod);
member this.FromAsync : IAsyncResult * Func<IAsyncResult, 'Result> -> System.Threading.Tasks.Task<'Result>
Public Function FromAsync (asyncResult As IAsyncResult, endMethod As Func(Of IAsyncResult, TResult)) As Task(Of TResult)

Parameters

asyncResult
IAsyncResult

The IAsyncResult whose completion should trigger the processing of the endMethod.

endMethod
Func<IAsyncResult,TResult>

The function delegate that processes the completed asyncResult.

Returns

Task<TResult>

A Task<TResult> that represents the asynchronous operation.

Exceptions

ArgumentNullException

The asyncResult argument is null.

-or-

The endMethod argument is null.

See also

Applies to

FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, Object)

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

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

public:
 System::Threading::Tasks::Task<TResult> ^ FromAsync(Func<AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Func<IAsyncResult ^, TResult> ^ endMethod, System::Object ^ state);
public System.Threading.Tasks.Task<TResult> FromAsync (Func<AsyncCallback,object,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, object state);
public System.Threading.Tasks.Task<TResult> FromAsync (Func<AsyncCallback,object?,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, object? state);
member this.FromAsync : Func<AsyncCallback, obj, IAsyncResult> * Func<IAsyncResult, 'Result> * obj -> System.Threading.Tasks.Task<'Result>
Public Function FromAsync (beginMethod As Func(Of AsyncCallback, Object, IAsyncResult), endMethod As Func(Of IAsyncResult, TResult), state As Object) As Task(Of TResult)

Parameters

beginMethod
Func<AsyncCallback,Object,IAsyncResult>

The delegate that begins the asynchronous operation.

endMethod
Func<IAsyncResult,TResult>

The delegate that ends the asynchronous operation.

state
Object

An object containing data to be used by the beginMethod delegate.

Returns

Task<TResult>

The created task that represents the asynchronous operation.

Exceptions

ArgumentNullException

The beginMethod argument is null.

-or-

The endMethod argument is null.

Remarks

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

See also

Applies to

FromAsync(IAsyncResult, Func<IAsyncResult,TResult>, TaskCreationOptions)

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

Creates a task that executes an end method function when a specified IAsyncResult completes.

public:
 System::Threading::Tasks::Task<TResult> ^ FromAsync(IAsyncResult ^ asyncResult, Func<IAsyncResult ^, TResult> ^ endMethod, System::Threading::Tasks::TaskCreationOptions creationOptions);
public System.Threading.Tasks.Task<TResult> FromAsync (IAsyncResult asyncResult, Func<IAsyncResult,TResult> endMethod, System.Threading.Tasks.TaskCreationOptions creationOptions);
member this.FromAsync : IAsyncResult * Func<IAsyncResult, 'Result> * System.Threading.Tasks.TaskCreationOptions -> System.Threading.Tasks.Task<'Result>
Public Function FromAsync (asyncResult As IAsyncResult, endMethod As Func(Of IAsyncResult, TResult), creationOptions As TaskCreationOptions) As Task(Of TResult)

Parameters

asyncResult
IAsyncResult

The IAsyncResult whose completion should trigger the processing of the endMethod.

endMethod
Func<IAsyncResult,TResult>

The function delegate that processes the completed asyncResult.

creationOptions
TaskCreationOptions

One of the enumeration values that controls the behavior of the created task.

Returns

Task<TResult>

A task that represents the asynchronous operation.

Exceptions

ArgumentNullException

The asyncResult argument is null.

-or-

The endMethod argument is null.

ArgumentOutOfRangeException

The creationOptions argument specifies an invalid value.

See also

Applies to

FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, Object, TaskCreationOptions)

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

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

public:
 System::Threading::Tasks::Task<TResult> ^ FromAsync(Func<AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Func<IAsyncResult ^, TResult> ^ endMethod, System::Object ^ state, System::Threading::Tasks::TaskCreationOptions creationOptions);
public System.Threading.Tasks.Task<TResult> FromAsync (Func<AsyncCallback,object,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, object state, System.Threading.Tasks.TaskCreationOptions creationOptions);
public System.Threading.Tasks.Task<TResult> FromAsync (Func<AsyncCallback,object?,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, object? state, System.Threading.Tasks.TaskCreationOptions creationOptions);
member this.FromAsync : Func<AsyncCallback, obj, IAsyncResult> * Func<IAsyncResult, 'Result> * obj * System.Threading.Tasks.TaskCreationOptions -> System.Threading.Tasks.Task<'Result>
Public Function FromAsync (beginMethod As Func(Of AsyncCallback, Object, IAsyncResult), endMethod As Func(Of IAsyncResult, TResult), state As Object, creationOptions As TaskCreationOptions) As Task(Of TResult)

Parameters

beginMethod
Func<AsyncCallback,Object,IAsyncResult>

The delegate that begins the asynchronous operation.

endMethod
Func<IAsyncResult,TResult>

The delegate that ends the asynchronous operation.

state
Object

An object containing data to be used by the beginMethod delegate.

creationOptions
TaskCreationOptions

One of the enumeration values that controls the behavior of the created task.

Returns

Task<TResult>

The created Task<TResult> that represents the asynchronous operation.

Exceptions

ArgumentNullException

The beginMethod argument is null.

-or-

The endMethod argument is null.

ArgumentOutOfRangeException

The creationOptions argument specifies an invalid value.

Remarks

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

See also

Applies to

FromAsync(IAsyncResult, Func<IAsyncResult,TResult>, TaskCreationOptions, TaskScheduler)

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

Creates a task that executes an end method function when a specified IAsyncResult completes.

public:
 System::Threading::Tasks::Task<TResult> ^ FromAsync(IAsyncResult ^ asyncResult, Func<IAsyncResult ^, TResult> ^ endMethod, System::Threading::Tasks::TaskCreationOptions creationOptions, System::Threading::Tasks::TaskScheduler ^ scheduler);
public System.Threading.Tasks.Task<TResult> FromAsync (IAsyncResult asyncResult, Func<IAsyncResult,TResult> endMethod, System.Threading.Tasks.TaskCreationOptions creationOptions, System.Threading.Tasks.TaskScheduler scheduler);
member this.FromAsync : IAsyncResult * Func<IAsyncResult, 'Result> * System.Threading.Tasks.TaskCreationOptions * System.Threading.Tasks.TaskScheduler -> System.Threading.Tasks.Task<'Result>
Public Function FromAsync (asyncResult As IAsyncResult, endMethod As Func(Of IAsyncResult, TResult), creationOptions As TaskCreationOptions, scheduler As TaskScheduler) As Task(Of TResult)

Parameters

asyncResult
IAsyncResult

The IAsyncResult whose completion should trigger the processing of the endMethod.

endMethod
Func<IAsyncResult,TResult>

The function delegate that processes the completed asyncResult.

creationOptions
TaskCreationOptions

One of the enumeration values that controls the behavior of the created task.

scheduler
TaskScheduler

The task scheduler that is used to schedule the task that executes the end method.

Returns

Task<TResult>

The created task that represents the asynchronous operation.

Exceptions

ArgumentNullException

The asyncResult argument is null.

-or-

The endMethod argument is null.

-or-

The scheduler argument is null.

ArgumentOutOfRangeException

The creationOptions parameter specifies an invalid value.

See also

Applies to

FromAsync<TArg1,TArg2,TArg3>(Func<TArg1,TArg2,TArg3,AsyncCallback, Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, TArg3, Object, TaskCreationOptions)

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

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

public:
generic <typename TArg1, typename TArg2, typename TArg3>
 System::Threading::Tasks::Task<TResult> ^ FromAsync(Func<TArg1, TArg2, TArg3, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Func<IAsyncResult ^, TResult> ^ endMethod, TArg1 arg1, TArg2 arg2, TArg3 arg3, System::Object ^ state, System::Threading::Tasks::TaskCreationOptions creationOptions);
public System.Threading.Tasks.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, System.Threading.Tasks.TaskCreationOptions creationOptions);
public System.Threading.Tasks.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, System.Threading.Tasks.TaskCreationOptions creationOptions);
member this.FromAsync : Func<'TArg1, 'TArg2, 'TArg3, AsyncCallback, obj, IAsyncResult> * Func<IAsyncResult, 'Result> * 'TArg1 * 'TArg2 * 'TArg3 * obj * System.Threading.Tasks.TaskCreationOptions -> System.Threading.Tasks.Task<'Result>
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)

Type Parameters

TArg1

The type of the second argument passed to beginMethod delegate.

TArg2

The type of the third argument passed to beginMethod delegate.

TArg3

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

Parameters

beginMethod
Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>

The delegate that begins the asynchronous operation.

endMethod
Func<IAsyncResult,TResult>

The delegate that ends the asynchronous operation.

arg1
TArg1

The first argument passed to the beginMethod delegate.

arg2
TArg2

The second argument passed to the beginMethod delegate.

arg3
TArg3

The third argument passed to the beginMethod delegate.

state
Object

An object containing data to be used by the beginMethod delegate.

creationOptions
TaskCreationOptions

An object that controls the behavior of the created task.

Returns

Task<TResult>

The created task that represents the asynchronous operation.

Exceptions

ArgumentNullException

The beginMethod argument is null.

-or-

The endMethod argument is null.

ArgumentOutOfRangeException

The creationOptions parameter specifies an invalid value.

Remarks

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

See also

Applies to

FromAsync<TArg1,TArg2,TArg3>(Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, TArg3, Object)

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

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

public:
generic <typename TArg1, typename TArg2, typename TArg3>
 System::Threading::Tasks::Task<TResult> ^ FromAsync(Func<TArg1, TArg2, TArg3, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Func<IAsyncResult ^, TResult> ^ endMethod, TArg1 arg1, TArg2 arg2, TArg3 arg3, System::Object ^ state);
public System.Threading.Tasks.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);
public System.Threading.Tasks.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);
member this.FromAsync : Func<'TArg1, 'TArg2, 'TArg3, AsyncCallback, obj, IAsyncResult> * Func<IAsyncResult, 'Result> * 'TArg1 * 'TArg2 * 'TArg3 * obj -> System.Threading.Tasks.Task<'Result>
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) As Task(Of TResult)

Type Parameters

TArg1

The type of the second argument passed to beginMethod delegate.

TArg2

The type of the third argument passed to beginMethod delegate.

TArg3

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

Parameters

beginMethod
Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>

The delegate that begins the asynchronous operation.

endMethod
Func<IAsyncResult,TResult>

The delegate that ends the asynchronous operation.

arg1
TArg1

The first argument passed to the beginMethod delegate.

arg2
TArg2

The second argument passed to the beginMethod delegate.

arg3
TArg3

The third argument passed to the beginMethod delegate.

state
Object

An object containing data to be used by the beginMethod delegate.

Returns

Task<TResult>

The created task that represents the asynchronous operation.

Exceptions

ArgumentNullException

The beginMethod argument is null.

-or-

The endMethod argument is null.

Remarks

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

See also

Applies to

FromAsync<TArg1,TArg2>(Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, Object, TaskCreationOptions)

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

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

public:
generic <typename TArg1, typename TArg2>
 System::Threading::Tasks::Task<TResult> ^ FromAsync(Func<TArg1, TArg2, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Func<IAsyncResult ^, TResult> ^ endMethod, TArg1 arg1, TArg2 arg2, System::Object ^ state, System::Threading::Tasks::TaskCreationOptions creationOptions);
public System.Threading.Tasks.Task<TResult> FromAsync<TArg1,TArg2> (Func<TArg1,TArg2,AsyncCallback,object,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, TArg1 arg1, TArg2 arg2, object state, System.Threading.Tasks.TaskCreationOptions creationOptions);
public System.Threading.Tasks.Task<TResult> FromAsync<TArg1,TArg2> (Func<TArg1,TArg2,AsyncCallback,object?,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, TArg1 arg1, TArg2 arg2, object? state, System.Threading.Tasks.TaskCreationOptions creationOptions);
member this.FromAsync : Func<'TArg1, 'TArg2, AsyncCallback, obj, IAsyncResult> * Func<IAsyncResult, 'Result> * 'TArg1 * 'TArg2 * obj * System.Threading.Tasks.TaskCreationOptions -> System.Threading.Tasks.Task<'Result>
Public Function FromAsync(Of TArg1, TArg2) (beginMethod As Func(Of TArg1, TArg2, AsyncCallback, Object, IAsyncResult), endMethod As Func(Of IAsyncResult, TResult), arg1 As TArg1, arg2 As TArg2, state As Object, creationOptions As TaskCreationOptions) As Task(Of TResult)

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
Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>

The delegate that begins the asynchronous operation.

endMethod
Func<IAsyncResult,TResult>

The delegate that ends the asynchronous operation.

arg1
TArg1

The first argument passed to the beginMethod delegate.

arg2
TArg2

The second argument passed to the beginMethod delegate.

state
Object

An object containing data to be used by the beginMethod delegate.

creationOptions
TaskCreationOptions

An object that controls the behavior of the created Task<TResult>.

Returns

Task<TResult>

The created task that represents the asynchronous operation.

Exceptions

ArgumentNullException

The beginMethod argument is null.

-or-

The endMethod argument is null.

ArgumentOutOfRangeException

The creationOptions parameter specifies an invalid value.

Remarks

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

See also

Applies to

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

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

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

public:
generic <typename TArg1, typename TArg2>
 System::Threading::Tasks::Task<TResult> ^ FromAsync(Func<TArg1, TArg2, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Func<IAsyncResult ^, TResult> ^ endMethod, TArg1 arg1, TArg2 arg2, System::Object ^ state);
public System.Threading.Tasks.Task<TResult> FromAsync<TArg1,TArg2> (Func<TArg1,TArg2,AsyncCallback,object,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, TArg1 arg1, TArg2 arg2, object state);
public System.Threading.Tasks.Task<TResult> FromAsync<TArg1,TArg2> (Func<TArg1,TArg2,AsyncCallback,object?,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, TArg1 arg1, TArg2 arg2, object? state);
member this.FromAsync : Func<'TArg1, 'TArg2, AsyncCallback, obj, IAsyncResult> * Func<IAsyncResult, 'Result> * 'TArg1 * 'TArg2 * obj -> System.Threading.Tasks.Task<'Result>
Public Function FromAsync(Of TArg1, TArg2) (beginMethod As Func(Of TArg1, TArg2, AsyncCallback, Object, IAsyncResult), endMethod As Func(Of IAsyncResult, TResult), arg1 As TArg1, arg2 As TArg2, state As Object) As Task(Of TResult)

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
Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>

The delegate that begins the asynchronous operation.

endMethod
Func<IAsyncResult,TResult>

The delegate that ends the asynchronous operation.

arg1
TArg1

The first argument passed to the beginMethod delegate.

arg2
TArg2

The second argument passed to the beginMethod delegate.

state
Object

An object containing data to be used by the beginMethod delegate.

Returns

Task<TResult>

The created task that represents the asynchronous operation.

Exceptions

ArgumentNullException

The beginMethod argument is null.

-or-

The endMethod argument is null.

Remarks

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

See also

Applies to

FromAsync<TArg1>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, Object)

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

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

public:
generic <typename TArg1>
 System::Threading::Tasks::Task<TResult> ^ FromAsync(Func<TArg1, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Func<IAsyncResult ^, TResult> ^ endMethod, TArg1 arg1, System::Object ^ state);
public System.Threading.Tasks.Task<TResult> FromAsync<TArg1> (Func<TArg1,AsyncCallback,object,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, TArg1 arg1, object state);
public System.Threading.Tasks.Task<TResult> FromAsync<TArg1> (Func<TArg1,AsyncCallback,object?,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, TArg1 arg1, object? state);
member this.FromAsync : Func<'TArg1, AsyncCallback, obj, IAsyncResult> * Func<IAsyncResult, 'Result> * 'TArg1 * obj -> System.Threading.Tasks.Task<'Result>
Public Function FromAsync(Of TArg1) (beginMethod As Func(Of TArg1, AsyncCallback, Object, IAsyncResult), endMethod As Func(Of IAsyncResult, TResult), arg1 As TArg1, state As Object) As Task(Of TResult)

Type Parameters

TArg1

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

Parameters

beginMethod
Func<TArg1,AsyncCallback,Object,IAsyncResult>

The delegate that begins the asynchronous operation.

endMethod
Func<IAsyncResult,TResult>

The delegate that ends the asynchronous operation.

arg1
TArg1

The first argument passed to the beginMethod delegate.

state
Object

An object containing data to be used by the beginMethod delegate.

Returns

Task<TResult>

The created task that represents the asynchronous operation.

Exceptions

ArgumentNullException

The beginMethod argument is null.

-or-

The endMethod argument is null.

Remarks

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

See also

Applies to

FromAsync<TArg1>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, Object, TaskCreationOptions)

Source:
FutureFactory.cs
Source:
FutureFactory.cs
Source:
FutureFactory.cs

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

public:
generic <typename TArg1>
 System::Threading::Tasks::Task<TResult> ^ FromAsync(Func<TArg1, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Func<IAsyncResult ^, TResult> ^ endMethod, TArg1 arg1, System::Object ^ state, System::Threading::Tasks::TaskCreationOptions creationOptions);
public System.Threading.Tasks.Task<TResult> FromAsync<TArg1> (Func<TArg1,AsyncCallback,object,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, TArg1 arg1, object state, System.Threading.Tasks.TaskCreationOptions creationOptions);
public System.Threading.Tasks.Task<TResult> FromAsync<TArg1> (Func<TArg1,AsyncCallback,object?,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, TArg1 arg1, object? state, System.Threading.Tasks.TaskCreationOptions creationOptions);
member this.FromAsync : Func<'TArg1, AsyncCallback, obj, IAsyncResult> * Func<IAsyncResult, 'Result> * 'TArg1 * obj * System.Threading.Tasks.TaskCreationOptions -> System.Threading.Tasks.Task<'Result>
Public Function FromAsync(Of TArg1) (beginMethod As Func(Of TArg1, AsyncCallback, Object, IAsyncResult), endMethod As Func(Of IAsyncResult, TResult), arg1 As TArg1, state As Object, creationOptions As TaskCreationOptions) As Task(Of TResult)

Type Parameters

TArg1

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

Parameters

beginMethod
Func<TArg1,AsyncCallback,Object,IAsyncResult>

The delegate that begins the asynchronous operation.

endMethod
Func<IAsyncResult,TResult>

The delegate that ends the asynchronous operation.

arg1
TArg1

The first argument passed to the beginMethod delegate.

state
Object

An object containing data to be used by the beginMethod delegate.

creationOptions
TaskCreationOptions

One of the enumeration values that controls the behavior of the created task.

Returns

Task<TResult>

The created task that represents the asynchronous operation.

Exceptions

ArgumentNullException

The beginMethod argument is null.

-or-

The endMethod argument is null.

ArgumentOutOfRangeException

The creationOptions parameter specifies an invalid value.

Remarks

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

See also

Applies to