TaskFactory.FromAsync 方法
定義
多載
| FromAsync(IAsyncResult, Action<IAsyncResult>) |
建立 Task，這個項目會在指定的 IAsyncResult 完成時執行結束方法動作。Creates a Task that executes an end method action when a specified IAsyncResult completes. |
| FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object) |
建立 Task，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
| FromAsync(IAsyncResult, Action<IAsyncResult>, TaskCreationOptions) |
建立 Task，這個項目會在指定的 IAsyncResult 完成時執行結束方法動作。Creates a Task that executes an end method action when a specified IAsyncResult completes. |
| FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) |
建立 Task，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
| FromAsync(IAsyncResult, Action<IAsyncResult>, TaskCreationOptions, TaskScheduler) |
建立 Task，這個項目會在指定的 IAsyncResult 完成時執行結束方法動作。Creates a Task that executes an end method action when a specified IAsyncResult completes. |
| FromAsync<TArg1,TArg2,TArg3,TResult>(Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, TArg3, Object, TaskCreationOptions) |
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
| FromAsync<TArg1,TArg2,TArg3,TResult>(Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, TArg3, Object) |
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> 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>, Action<IAsyncResult>, TArg1, TArg2, TArg3, Object, TaskCreationOptions) |
建立 Task，表示一組符合「非同步程式設計模型」模式的開始和結束方法。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>, Action<IAsyncResult>, TArg1, TArg2, TArg3, Object) |
建立 Task，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
| FromAsync<TArg1,TArg2,TResult>(Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, Object) |
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
| FromAsync<TArg1,TArg2,TResult>(Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, Object, TaskCreationOptions) |
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> 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>, Action<IAsyncResult>, TArg1, TArg2, Object) |
建立 Task，表示一組符合「非同步程式設計模型」模式的開始和結束方法。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>, Action<IAsyncResult>, TArg1, TArg2, Object, TaskCreationOptions) |
建立 Task，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
| FromAsync<TArg1,TResult>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, Object) |
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
| FromAsync<TArg1,TResult>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, Object, TaskCreationOptions) |
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
| FromAsync<TArg1>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, TArg1, Object, TaskCreationOptions) |
建立 Task，表示一組符合「非同步程式設計模型」模式的開始和結束方法。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>, Action<IAsyncResult>, TArg1, Object) |
建立 Task，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
| FromAsync<TResult>(IAsyncResult, Func<IAsyncResult,TResult>, TaskCreationOptions, TaskScheduler) |
建立 Task<TResult>，當指定的 IAsyncResult 完成時會執行結束方法函式。Creates a Task<TResult> that executes an end method function when a specified IAsyncResult completes. |
| FromAsync<TResult>(IAsyncResult, Func<IAsyncResult,TResult>, TaskCreationOptions) |
建立 Task<TResult>，當指定的 IAsyncResult 完成時會執行結束方法函式。Creates a Task<TResult> that executes an end method function when a specified IAsyncResult completes. |
| FromAsync<TResult>(Func<AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, Object) |
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
| FromAsync<TResult>(IAsyncResult, Func<IAsyncResult,TResult>) |
建立 Task<TResult>，當指定的 IAsyncResult 完成時會執行結束方法函式。Creates a Task<TResult> that executes an end method function when a specified IAsyncResult completes. |
| FromAsync<TResult>(Func<AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, Object, TaskCreationOptions) |
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern. |
FromAsync(IAsyncResult, Action<IAsyncResult>)
建立 Task，這個項目會在指定的 IAsyncResult 完成時執行結束方法動作。Creates a Task that executes an end method action when a specified IAsyncResult completes.
public:
System::Threading::Tasks::Task ^ FromAsync(IAsyncResult ^ asyncResult, Action<IAsyncResult ^> ^ endMethod);public System.Threading.Tasks.Task FromAsync (IAsyncResult asyncResult, Action<IAsyncResult> endMethod);member this.FromAsync : IAsyncResult * Action<IAsyncResult> -> System.Threading.Tasks.TaskPublic Function FromAsync (asyncResult As IAsyncResult, endMethod As Action(Of IAsyncResult)) As Task參數
- asyncResult
- IAsyncResult
IAsyncResult，完成時會觸發 endMethod 處理作業。The IAsyncResult whose completion should trigger the processing of the endMethod.
- endMethod
- Action<IAsyncResult>
動作委派，會處理已完成的 asyncResult。The action delegate that processes the completed asyncResult.
傳回
表示非同步作業的 Task。A Task that represents the asynchronous operation.
例外狀況
asyncResult 為 null。asyncResult is null.
-或--or-
endMethod 為 null。endMethod is null.
備註
提示
FromAsync採用參數的多載 asyncResult 不像採用參數的多載一樣有效率 beginMethod 。The FromAsync overloads that take an asyncResult parameter are not as efficient as the overloads that take a beginMethod parameter. 如果效能是問題，請使用提供模式的多載 beginMethod / endMethod 。If performance is an issue, use the overloads that provide the beginMethod/endMethod pattern.
適用於
FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object)
public:
System::Threading::Tasks::Task ^ FromAsync(Func<AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Action<IAsyncResult ^> ^ endMethod, System::Object ^ state);public System.Threading.Tasks.Task FromAsync (Func<AsyncCallback,object,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, object state);public System.Threading.Tasks.Task FromAsync (Func<AsyncCallback,object?,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, object? state);member this.FromAsync : Func<AsyncCallback, obj, IAsyncResult> * Action<IAsyncResult> * obj -> System.Threading.Tasks.TaskPublic Function FromAsync (beginMethod As Func(Of AsyncCallback, Object, IAsyncResult), endMethod As Action(Of IAsyncResult), state As Object) As Task參數
- beginMethod
- Func<AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Action<IAsyncResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
傳回
建立的 Task，表示非同步作業。The created Task that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync(IAsyncResult, Action<IAsyncResult>, TaskCreationOptions)
建立 Task，這個項目會在指定的 IAsyncResult 完成時執行結束方法動作。Creates a Task that executes an end method action when a specified IAsyncResult completes.
public:
System::Threading::Tasks::Task ^ FromAsync(IAsyncResult ^ asyncResult, Action<IAsyncResult ^> ^ endMethod, System::Threading::Tasks::TaskCreationOptions creationOptions);public System.Threading.Tasks.Task FromAsync (IAsyncResult asyncResult, Action<IAsyncResult> endMethod, System.Threading.Tasks.TaskCreationOptions creationOptions);member this.FromAsync : IAsyncResult * Action<IAsyncResult> * System.Threading.Tasks.TaskCreationOptions -> System.Threading.Tasks.TaskPublic Function FromAsync (asyncResult As IAsyncResult, endMethod As Action(Of IAsyncResult), creationOptions As TaskCreationOptions) As Task參數
- asyncResult
- IAsyncResult
IAsyncResult，完成時會觸發 endMethod 處理作業。The IAsyncResult whose completion should trigger the processing of the endMethod.
- endMethod
- Action<IAsyncResult>
動作委派，會處理已完成的 asyncResult。The action delegate that processes the completed asyncResult.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task 的行為。The TaskCreationOptions value that controls the behavior of the created Task.
傳回
表示非同步作業的 Task。A Task that represents the asynchronous operation.
例外狀況
asyncResult 為 null。asyncResult is null.
-或--or-
endMethod 為 null。endMethod is null.
paramref name="creationOptions" /> 指定無效的 TaskCreationOptions 值。paramref name="creationOptions" /> specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
提示
FromAsync採用參數的多載 asyncResult 不像採用參數的多載一樣有效率 beginMethod 。The FromAsync overloads that take an asyncResult parameter are not as efficient as the overloads that take a beginMethod parameter. 如果效能是問題，請使用提供模式的多載 beginMethod / endMethod 。If performance is an issue, use the overloads that provide the beginMethod/endMethod pattern.
適用於
FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
public:
System::Threading::Tasks::Task ^ FromAsync(Func<AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Action<IAsyncResult ^> ^ endMethod, System::Object ^ state, System::Threading::Tasks::TaskCreationOptions creationOptions);public System.Threading.Tasks.Task FromAsync (Func<AsyncCallback,object,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, object state, System.Threading.Tasks.TaskCreationOptions creationOptions);public System.Threading.Tasks.Task FromAsync (Func<AsyncCallback,object?,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, object? state, System.Threading.Tasks.TaskCreationOptions creationOptions);member this.FromAsync : Func<AsyncCallback, obj, IAsyncResult> * Action<IAsyncResult> * obj * System.Threading.Tasks.TaskCreationOptions -> System.Threading.Tasks.TaskPublic Function FromAsync (beginMethod As Func(Of AsyncCallback, Object, IAsyncResult), endMethod As Action(Of IAsyncResult), state As Object, creationOptions As TaskCreationOptions) As Task參數
- beginMethod
- Func<AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Action<IAsyncResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task 的行為。The TaskCreationOptions value that controls the behavior of the created Task.
傳回
建立的 Task，表示非同步作業。The created Task that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value.
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod. TaskCreationOptions值 PreferFairness LongRunning 和 AttachedToParent 全都是互斥的。The TaskCreationOptions values PreferFairness, LongRunning and AttachedToParent are all mutually exclusive. 在 System.threading.tasks.taskfactory.fromasync 方法中， LongRunning 或 AttachedToParent 本身會導致擲回 ArgumentOutOfRangeException 。In the FromAsync methods, either LongRunning or AttachedToParent by themselves will cause an ArgumentOutOfRangeException to be thrown.
適用於
FromAsync(IAsyncResult, Action<IAsyncResult>, TaskCreationOptions, TaskScheduler)
建立 Task，這個項目會在指定的 IAsyncResult 完成時執行結束方法動作。Creates a Task that executes an end method action when a specified IAsyncResult completes.
public:
System::Threading::Tasks::Task ^ FromAsync(IAsyncResult ^ asyncResult, Action<IAsyncResult ^> ^ endMethod, System::Threading::Tasks::TaskCreationOptions creationOptions, System::Threading::Tasks::TaskScheduler ^ scheduler);public System.Threading.Tasks.Task FromAsync (IAsyncResult asyncResult, Action<IAsyncResult> endMethod, System.Threading.Tasks.TaskCreationOptions creationOptions, System.Threading.Tasks.TaskScheduler scheduler);member this.FromAsync : IAsyncResult * Action<IAsyncResult> * System.Threading.Tasks.TaskCreationOptions * System.Threading.Tasks.TaskScheduler -> System.Threading.Tasks.TaskPublic Function FromAsync (asyncResult As IAsyncResult, endMethod As Action(Of IAsyncResult), creationOptions As TaskCreationOptions, scheduler As TaskScheduler) As Task參數
- asyncResult
- IAsyncResult
IAsyncResult，完成時會觸發 endMethod 處理作業。The IAsyncResult whose completion should trigger the processing of the endMethod.
- endMethod
- Action<IAsyncResult>
動作委派，會處理已完成的 asyncResult。The action delegate that processes the completed asyncResult.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task 的行為。The TaskCreationOptions value that controls the behavior of the created Task.
- scheduler
- TaskScheduler
TaskScheduler，用來排程可執行結束方法的工作。The TaskScheduler that is used to schedule the task that executes the end method.
傳回
建立的 Task，表示非同步作業。The created Task that represents the asynchronous operation.
例外狀況
asyncResult 為 null。asyncResult is null.
-或--or-
endMethod 為 null。endMethod is null.
-或--or-
scheduler 為 null。scheduler is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
提示
FromAsync採用參數的多載 asyncResult 不像採用參數的多載一樣有效率 beginMethod 。The FromAsync overloads that take an asyncResult parameter are not as efficient as the overloads that take a beginMethod parameter. 如果效能是問題，請使用提供模式的多載 beginMethod / endMethod 。If performance is an issue, use the overloads that provide the beginMethod/endMethod pattern.
適用於
FromAsync<TArg1,TArg2,TArg3,TResult>(Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, TArg3, Object, TaskCreationOptions)
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> 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, typename TResult>
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,TResult> (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,TResult> (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, 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, creationOptions As TaskCreationOptions) As Task(Of TResult)類型參數
- TArg1
傳遞至 beginMethod 委派的第二個引數類型。The type of the second argument passed to beginMethod delegate.
- TArg2
傳遞至 beginMethod 委派的第三個引數類型。The type of the third argument passed to beginMethod delegate.
- TArg3
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- beginMethod
- Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Func<IAsyncResult,TResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- arg2
- TArg2
傳遞至 beginMethod 委派的第二個引數。The second argument passed to the beginMethod delegate.
- arg3
- TArg3
傳遞至 beginMethod 委派的第三個引數。The third argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task<TResult> 的行為。The TaskCreationOptions value that controls the behavior of the created Task<TResult>.
傳回
建立的 Task<TResult>，表示非同步作業。The created Task<TResult> that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1,TArg2,TArg3,TResult>(Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, TArg3, Object)
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> 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, typename TResult>
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,TResult> (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,TResult> (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, 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)類型參數
- TArg1
傳遞至 beginMethod 委派的第二個引數類型。The type of the second argument passed to beginMethod delegate.
- TArg2
傳遞至 beginMethod 委派的第三個引數類型。The type of the third argument passed to beginMethod delegate.
- TArg3
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- beginMethod
- Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Func<IAsyncResult,TResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- arg2
- TArg2
傳遞至 beginMethod 委派的第二個引數。The second argument passed to the beginMethod delegate.
- arg3
- TArg3
傳遞至 beginMethod 委派的第三個引數。The third argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
傳回
建立的 Task<TResult>，表示非同步作業。The created Task<TResult> that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1,TArg2,TArg3>(Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, TArg1, TArg2, TArg3, Object, TaskCreationOptions)
public:
generic <typename TArg1, typename TArg2, typename TArg3>
System::Threading::Tasks::Task ^ FromAsync(Func<TArg1, TArg2, TArg3, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Action<IAsyncResult ^> ^ endMethod, TArg1 arg1, TArg2 arg2, TArg3 arg3, System::Object ^ state, System::Threading::Tasks::TaskCreationOptions creationOptions);public System.Threading.Tasks.Task FromAsync<TArg1,TArg2,TArg3> (Func<TArg1,TArg2,TArg3,AsyncCallback,object,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, TArg2 arg2, TArg3 arg3, object state, System.Threading.Tasks.TaskCreationOptions creationOptions);public System.Threading.Tasks.Task FromAsync<TArg1,TArg2,TArg3> (Func<TArg1,TArg2,TArg3,AsyncCallback,object?,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, TArg2 arg2, TArg3 arg3, object? state, System.Threading.Tasks.TaskCreationOptions creationOptions);member this.FromAsync : Func<'TArg1, 'TArg2, 'TArg3, AsyncCallback, obj, IAsyncResult> * Action<IAsyncResult> * 'TArg1 * 'TArg2 * 'TArg3 * obj * System.Threading.Tasks.TaskCreationOptions -> System.Threading.Tasks.TaskPublic Function FromAsync(Of TArg1, TArg2, TArg3) (beginMethod As Func(Of TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult), endMethod As Action(Of IAsyncResult), arg1 As TArg1, arg2 As TArg2, arg3 As TArg3, state As Object, creationOptions As TaskCreationOptions) As Task類型參數
- TArg1
傳遞至 beginMethod 委派的第二個引數類型。The type of the second argument passed to beginMethod delegate.
- TArg2
傳遞至 beginMethod 委派的第三個引數類型。The type of the third argument passed to beginMethod delegate.
- TArg3
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
參數
- beginMethod
- Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Action<IAsyncResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- arg2
- TArg2
傳遞至 beginMethod 委派的第二個引數。The second argument passed to the beginMethod delegate.
- arg3
- TArg3
傳遞至 beginMethod 委派的第三個引數。The third argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task 的行為。The TaskCreationOptions value that controls the behavior of the created Task.
傳回
建立的 Task，表示非同步作業。The created Task that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1,TArg2,TArg3>(Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, TArg1, TArg2, TArg3, Object)
public:
generic <typename TArg1, typename TArg2, typename TArg3>
System::Threading::Tasks::Task ^ FromAsync(Func<TArg1, TArg2, TArg3, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Action<IAsyncResult ^> ^ endMethod, TArg1 arg1, TArg2 arg2, TArg3 arg3, System::Object ^ state);public System.Threading.Tasks.Task FromAsync<TArg1,TArg2,TArg3> (Func<TArg1,TArg2,TArg3,AsyncCallback,object,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, TArg2 arg2, TArg3 arg3, object state);public System.Threading.Tasks.Task FromAsync<TArg1,TArg2,TArg3> (Func<TArg1,TArg2,TArg3,AsyncCallback,object?,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, TArg2 arg2, TArg3 arg3, object? state);member this.FromAsync : Func<'TArg1, 'TArg2, 'TArg3, AsyncCallback, obj, IAsyncResult> * Action<IAsyncResult> * 'TArg1 * 'TArg2 * 'TArg3 * obj -> System.Threading.Tasks.TaskPublic Function FromAsync(Of TArg1, TArg2, TArg3) (beginMethod As Func(Of TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult), endMethod As Action(Of IAsyncResult), arg1 As TArg1, arg2 As TArg2, arg3 As TArg3, state As Object) As Task類型參數
- TArg1
傳遞至 beginMethod 委派的第二個引數類型。The type of the second argument passed to beginMethod delegate.
- TArg2
傳遞至 beginMethod 委派的第三個引數類型。The type of the third argument passed to beginMethod delegate.
- TArg3
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
參數
- beginMethod
- Func<TArg1,TArg2,TArg3,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Action<IAsyncResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- arg2
- TArg2
傳遞至 beginMethod 委派的第二個引數。The second argument passed to the beginMethod delegate.
- arg3
- TArg3
傳遞至 beginMethod 委派的第三個引數。The third argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
傳回
建立的 Task，表示非同步作業。The created Task that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1,TArg2,TResult>(Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, Object)
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
public:
generic <typename TArg1, typename TArg2, typename TResult>
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,TResult> (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,TResult> (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, TResult) (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)類型參數
- TArg1
傳遞至 beginMethod 委派的第二個引數類型。The type of the second argument passed to beginMethod delegate.
- TArg2
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- beginMethod
- Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Func<IAsyncResult,TResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- arg2
- TArg2
傳遞至 beginMethod 委派的第二個引數。The second argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
傳回
建立的 Task<TResult>，表示非同步作業。The created Task<TResult> that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1,TArg2,TResult>(Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, TArg2, Object, TaskCreationOptions)
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
public:
generic <typename TArg1, typename TArg2, typename TResult>
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,TResult> (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,TResult> (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, TResult) (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)類型參數
- TArg1
傳遞至 beginMethod 委派的第二個引數類型。The type of the second argument passed to beginMethod delegate.
- TArg2
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- beginMethod
- Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Func<IAsyncResult,TResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- arg2
- TArg2
傳遞至 beginMethod 委派的第二個引數。The second argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task<TResult> 的行為。The TaskCreationOptions value that controls the behavior of the created Task<TResult>.
傳回
建立的 Task<TResult>，表示非同步作業。The created Task<TResult> that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1,TArg2>(Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, TArg1, TArg2, Object)
public:
generic <typename TArg1, typename TArg2>
System::Threading::Tasks::Task ^ FromAsync(Func<TArg1, TArg2, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Action<IAsyncResult ^> ^ endMethod, TArg1 arg1, TArg2 arg2, System::Object ^ state);public System.Threading.Tasks.Task FromAsync<TArg1,TArg2> (Func<TArg1,TArg2,AsyncCallback,object,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, TArg2 arg2, object state);public System.Threading.Tasks.Task FromAsync<TArg1,TArg2> (Func<TArg1,TArg2,AsyncCallback,object?,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, TArg2 arg2, object? state);member this.FromAsync : Func<'TArg1, 'TArg2, AsyncCallback, obj, IAsyncResult> * Action<IAsyncResult> * 'TArg1 * 'TArg2 * obj -> System.Threading.Tasks.TaskPublic Function FromAsync(Of TArg1, TArg2) (beginMethod As Func(Of TArg1, TArg2, AsyncCallback, Object, IAsyncResult), endMethod As Action(Of IAsyncResult), arg1 As TArg1, arg2 As TArg2, state As Object) As Task類型參數
- TArg1
傳遞至 beginMethod 委派的第二個引數類型。The type of the second argument passed to beginMethod delegate.
- TArg2
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
參數
- beginMethod
- Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Action<IAsyncResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- arg2
- TArg2
傳遞至 beginMethod 委派的第二個引數。The second argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
傳回
建立的 Task，表示非同步作業。The created Task that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1,TArg2>(Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, TArg1, TArg2, Object, TaskCreationOptions)
public:
generic <typename TArg1, typename TArg2>
System::Threading::Tasks::Task ^ FromAsync(Func<TArg1, TArg2, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Action<IAsyncResult ^> ^ endMethod, TArg1 arg1, TArg2 arg2, System::Object ^ state, System::Threading::Tasks::TaskCreationOptions creationOptions);public System.Threading.Tasks.Task FromAsync<TArg1,TArg2> (Func<TArg1,TArg2,AsyncCallback,object,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, TArg2 arg2, object state, System.Threading.Tasks.TaskCreationOptions creationOptions);public System.Threading.Tasks.Task FromAsync<TArg1,TArg2> (Func<TArg1,TArg2,AsyncCallback,object?,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, TArg2 arg2, object? state, System.Threading.Tasks.TaskCreationOptions creationOptions);member this.FromAsync : Func<'TArg1, 'TArg2, AsyncCallback, obj, IAsyncResult> * Action<IAsyncResult> * 'TArg1 * 'TArg2 * obj * System.Threading.Tasks.TaskCreationOptions -> System.Threading.Tasks.TaskPublic Function FromAsync(Of TArg1, TArg2) (beginMethod As Func(Of TArg1, TArg2, AsyncCallback, Object, IAsyncResult), endMethod As Action(Of IAsyncResult), arg1 As TArg1, arg2 As TArg2, state As Object, creationOptions As TaskCreationOptions) As Task類型參數
- TArg1
傳遞至 beginMethod 委派的第二個引數類型。The type of the second argument passed to beginMethod delegate.
- TArg2
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
參數
- beginMethod
- Func<TArg1,TArg2,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Action<IAsyncResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- arg2
- TArg2
傳遞至 beginMethod 委派的第二個引數。The second argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task 的行為。The TaskCreationOptions value that controls the behavior of the created Task.
傳回
建立的 Task，表示非同步作業。The created Task that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1,TResult>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, Object)
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
public:
generic <typename TArg1, typename TResult>
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,TResult> (Func<TArg1,AsyncCallback,object,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, TArg1 arg1, object state);public System.Threading.Tasks.Task<TResult> FromAsync<TArg1,TResult> (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, TResult) (beginMethod As Func(Of TArg1, AsyncCallback, Object, IAsyncResult), endMethod As Func(Of IAsyncResult, TResult), arg1 As TArg1, state As Object) As Task(Of TResult)類型參數
- TArg1
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- beginMethod
- Func<TArg1,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Func<IAsyncResult,TResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
傳回
建立的 Task<TResult>，表示非同步作業。The created Task<TResult> that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1,TResult>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, TArg1, Object, TaskCreationOptions)
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
public:
generic <typename TArg1, typename TResult>
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,TResult> (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,TResult> (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, TResult) (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)類型參數
- TArg1
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- beginMethod
- Func<TArg1,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Func<IAsyncResult,TResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task<TResult> 的行為。The TaskCreationOptions value that controls the behavior of the created Task<TResult>.
傳回
建立的 Task<TResult>，表示非同步作業。The created Task<TResult> that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, TArg1, Object, TaskCreationOptions)
public:
generic <typename TArg1>
System::Threading::Tasks::Task ^ FromAsync(Func<TArg1, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Action<IAsyncResult ^> ^ endMethod, TArg1 arg1, System::Object ^ state, System::Threading::Tasks::TaskCreationOptions creationOptions);public System.Threading.Tasks.Task FromAsync<TArg1> (Func<TArg1,AsyncCallback,object,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, object state, System.Threading.Tasks.TaskCreationOptions creationOptions);public System.Threading.Tasks.Task FromAsync<TArg1> (Func<TArg1,AsyncCallback,object?,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, object? state, System.Threading.Tasks.TaskCreationOptions creationOptions);member this.FromAsync : Func<'TArg1, AsyncCallback, obj, IAsyncResult> * Action<IAsyncResult> * 'TArg1 * obj * System.Threading.Tasks.TaskCreationOptions -> System.Threading.Tasks.TaskPublic Function FromAsync(Of TArg1) (beginMethod As Func(Of TArg1, AsyncCallback, Object, IAsyncResult), endMethod As Action(Of IAsyncResult), arg1 As TArg1, state As Object, creationOptions As TaskCreationOptions) As Task類型參數
- TArg1
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
參數
- beginMethod
- Func<TArg1,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Action<IAsyncResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task 的行為。The TaskCreationOptions value that controls the behavior of the created Task.
傳回
建立的 Task，表示非同步作業。The created Task that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TArg1>(Func<TArg1,AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, TArg1, Object)
public:
generic <typename TArg1>
System::Threading::Tasks::Task ^ FromAsync(Func<TArg1, AsyncCallback ^, System::Object ^, IAsyncResult ^> ^ beginMethod, Action<IAsyncResult ^> ^ endMethod, TArg1 arg1, System::Object ^ state);public System.Threading.Tasks.Task FromAsync<TArg1> (Func<TArg1,AsyncCallback,object,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, object state);public System.Threading.Tasks.Task FromAsync<TArg1> (Func<TArg1,AsyncCallback,object?,IAsyncResult> beginMethod, Action<IAsyncResult> endMethod, TArg1 arg1, object? state);member this.FromAsync : Func<'TArg1, AsyncCallback, obj, IAsyncResult> * Action<IAsyncResult> * 'TArg1 * obj -> System.Threading.Tasks.TaskPublic Function FromAsync(Of TArg1) (beginMethod As Func(Of TArg1, AsyncCallback, Object, IAsyncResult), endMethod As Action(Of IAsyncResult), arg1 As TArg1, state As Object) As Task類型參數
- TArg1
傳遞至 beginMethod 委派的第一個引數類型。The type of the first argument passed to the beginMethod delegate.
參數
- beginMethod
- Func<TArg1,AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Action<IAsyncResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- arg1
- TArg1
傳遞至 beginMethod 委派的第一個引數。The first argument passed to the beginMethod delegate.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
傳回
建立的 Task，表示非同步作業。The created Task that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
備註
beginMethod委派會在上執行的執行緒上啟動 FromAsync 。The beginMethod delegate is started on the thread that FromAsync is running on. 這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TResult>(IAsyncResult, Func<IAsyncResult,TResult>, TaskCreationOptions, TaskScheduler)
建立 Task<TResult>，當指定的 IAsyncResult 完成時會執行結束方法函式。Creates a Task<TResult> that executes an end method function when a specified IAsyncResult completes.
public:
generic <typename TResult>
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<TResult> (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(Of TResult) (asyncResult As IAsyncResult, endMethod As Func(Of IAsyncResult, TResult), creationOptions As TaskCreationOptions, scheduler As TaskScheduler) As Task(Of TResult)類型參數
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- asyncResult
- IAsyncResult
IAsyncResult，完成時會觸發 endMethod 處理作業。The IAsyncResult whose completion should trigger the processing of the endMethod.
- endMethod
- Func<IAsyncResult,TResult>
函式委派，會處理已完成的 asyncResult。The function delegate that processes the completed asyncResult.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task<TResult> 的行為。The TaskCreationOptions value that controls the behavior of the created Task<TResult>.
- scheduler
- TaskScheduler
TaskScheduler，用來排程可執行結束方法的工作。The TaskScheduler that is used to schedule the task that executes the end method.
傳回
表示非同步作業的 Task<TResult>。A Task<TResult> that represents the asynchronous operation.
例外狀況
asyncResult 為 null。asyncResult is null.
-或--or-
endMethod 為 null。endMethod is null.
-或--or-
scheduler 為 null。scheduler is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
提示
FromAsync採用參數的多載 asyncResult 不像採用參數的多載一樣有效率 beginMethod 。The FromAsync overloads that take an asyncResult parameter are not as efficient as the overloads that take a beginMethod parameter. 如果效能是問題，請使用提供模式的多載 beginMethod / endMethod 。If performance is an issue, use the overloads that provide the beginMethod/endMethod pattern.
適用於
FromAsync<TResult>(IAsyncResult, Func<IAsyncResult,TResult>, TaskCreationOptions)
建立 Task<TResult>，當指定的 IAsyncResult 完成時會執行結束方法函式。Creates a Task<TResult> that executes an end method function when a specified IAsyncResult completes.
public:
generic <typename TResult>
System::Threading::Tasks::Task<TResult> ^ FromAsync(IAsyncResult ^ asyncResult, Func<IAsyncResult ^, TResult> ^ endMethod, System::Threading::Tasks::TaskCreationOptions creationOptions);public System.Threading.Tasks.Task<TResult> FromAsync<TResult> (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(Of TResult) (asyncResult As IAsyncResult, endMethod As Func(Of IAsyncResult, TResult), creationOptions As TaskCreationOptions) As Task(Of TResult)類型參數
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- asyncResult
- IAsyncResult
IAsyncResult，完成時會觸發 endMethod 處理作業。The IAsyncResult whose completion should trigger the processing of the endMethod.
- endMethod
- Func<IAsyncResult,TResult>
函式委派，會處理已完成的 asyncResult。The function delegate that processes the completed asyncResult.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task<TResult> 的行為。The TaskCreationOptions value that controls the behavior of the created Task<TResult>.
傳回
表示非同步作業的 Task<TResult>。A Task<TResult> that represents the asynchronous operation.
例外狀況
asyncResult 為 null。asyncResult is null.
-或--or-
endMethod 為 null。endMethod is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
提示
FromAsync採用參數的多載 asyncResult 不像採用參數的多載一樣有效率 beginMethod 。The FromAsync overloads that take an asyncResult parameter are not as efficient as the overloads that take a beginMethod parameter. 如果效能是問題，請使用提供模式的多載 beginMethod / endMethod 。If performance is an issue, use the overloads that provide the beginMethod/endMethod pattern.
適用於
FromAsync<TResult>(Func<AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, Object)
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
public:
generic <typename TResult>
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<TResult> (Func<AsyncCallback,object,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, object state);public System.Threading.Tasks.Task<TResult> FromAsync<TResult> (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(Of TResult) (beginMethod As Func(Of AsyncCallback, Object, IAsyncResult), endMethod As Func(Of IAsyncResult, TResult), state As Object) As Task(Of TResult)類型參數
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- beginMethod
- Func<AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Func<IAsyncResult,TResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
傳回
建立的 Task<TResult>，表示非同步作業。The created Task<TResult> that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
備註
這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.
適用於
FromAsync<TResult>(IAsyncResult, Func<IAsyncResult,TResult>)
建立 Task<TResult>，當指定的 IAsyncResult 完成時會執行結束方法函式。Creates a Task<TResult> that executes an end method function when a specified IAsyncResult completes.
public:
generic <typename TResult>
System::Threading::Tasks::Task<TResult> ^ FromAsync(IAsyncResult ^ asyncResult, Func<IAsyncResult ^, TResult> ^ endMethod);public System.Threading.Tasks.Task<TResult> FromAsync<TResult> (IAsyncResult asyncResult, Func<IAsyncResult,TResult> endMethod);member this.FromAsync : IAsyncResult * Func<IAsyncResult, 'Result> -> System.Threading.Tasks.Task<'Result>Public Function FromAsync(Of TResult) (asyncResult As IAsyncResult, endMethod As Func(Of IAsyncResult, TResult)) As Task(Of TResult)類型參數
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- asyncResult
- IAsyncResult
IAsyncResult，完成時會觸發 endMethod 處理作業。The IAsyncResult whose completion should trigger the processing of the endMethod.
- endMethod
- Func<IAsyncResult,TResult>
函式委派，會處理已完成的 asyncResult。The function delegate that processes the completed asyncResult.
傳回
表示非同步作業的 Task<TResult>。A Task<TResult> that represents the asynchronous operation.
例外狀況
asyncResult 為 null。asyncResult is null.
-或--or-
endMethod 為 null。endMethod is null.
備註
提示
FromAsync採用參數的多載 asyncResult 不像採用參數的多載一樣有效率 beginMethod 。The FromAsync overloads that take an asyncResult parameter are not as efficient as the overloads that take a beginMethod parameter. 如果效能是問題，請使用提供模式的多載 beginMethod / endMethod 。If performance is an issue, use the overloads that provide the beginMethod/endMethod pattern.
適用於
FromAsync<TResult>(Func<AsyncCallback,Object,IAsyncResult>, Func<IAsyncResult,TResult>, Object, TaskCreationOptions)
建立 Task<TResult>，表示一組符合「非同步程式設計模型」模式的開始和結束方法。Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
public:
generic <typename TResult>
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<TResult> (Func<AsyncCallback,object,IAsyncResult> beginMethod, Func<IAsyncResult,TResult> endMethod, object state, System.Threading.Tasks.TaskCreationOptions creationOptions);public System.Threading.Tasks.Task<TResult> FromAsync<TResult> (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(Of TResult) (beginMethod As Func(Of AsyncCallback, Object, IAsyncResult), endMethod As Func(Of IAsyncResult, TResult), state As Object, creationOptions As TaskCreationOptions) As Task(Of TResult)類型參數
- TResult
可透過工作使用的結果型別。The type of the result available through the task.
參數
- beginMethod
- Func<AsyncCallback,Object,IAsyncResult>
開始非同步作業的委派。The delegate that begins the asynchronous operation.
- endMethod
- Func<IAsyncResult,TResult>
結束非同步作業的委派。The delegate that ends the asynchronous operation.
- state
- Object
物件，包含 beginMethod 委派要使用的資料。An object containing data to be used by the beginMethod delegate.
- creationOptions
- TaskCreationOptions
TaskCreationOptions 值，控制建立之 Task<TResult> 的行為。The TaskCreationOptions value that controls the behavior of the created Task<TResult>.
傳回
建立的 Task<TResult>，表示非同步作業。The created Task<TResult> that represents the asynchronous operation.
例外狀況
beginMethod 為 null。beginMethod is null.
-或--or-
endMethod 為 null。endMethod is null.
creationOptions 指定無效的 TaskCreationOptions 值。creationOptions specifies an invalid TaskCreationOptions value. 如需詳細資訊，請參閱 FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions) 的＜備註＞For more information, see the Remarks for FromAsync(Func<AsyncCallback,Object,IAsyncResult>, Action<IAsyncResult>, Object, TaskCreationOptions)
備註
這個方法會擲回擲回的任何例外狀況 beginMethod 。This method throws any exceptions thrown by the beginMethod.