NativeActivity<TResult>.Execute(NativeActivityContext) 方法

定義

命名空間:

System.Activities

組件:

System.Activities.dll

在衍生類別中實作時，執行活動的執行邏輯。

protected:
 abstract void Execute(System::Activities::NativeActivityContext ^ context);

protected abstract void Execute (System.Activities.NativeActivityContext context);

abstract member Execute : System.Activities.NativeActivityContext -> unit

Protected MustOverride Sub Execute (context As NativeActivityContext)

參數

context

NativeActivityContext

活動執行的執行內容。

範例

下列程式碼範例將示範如何在繼承自 NativeActivity<TResult> 的類別中使用 Execute。 此範例來自 非泛型 ParallelForEach 範例。

protected override void Execute(NativeActivityContext context)
{
    IEnumerable values = this.Values.Get(context);
    if (values == null)
    {
        throw new InvalidOperationException("ParallelForEach requires a non-null Values argument.");
    }

    IEnumerator valueEnumerator = values.GetEnumerator();

    CompletionCallback onBodyComplete = new CompletionCallback(OnBodyComplete);
    while (valueEnumerator.MoveNext())
    {
        if (this.Body != null)
        {
            context.ScheduleAction(this.Body, valueEnumerator.Current, onBodyComplete);
        }
    }
    IDisposable disposable = valueEnumerator as IDisposable;
    if (disposable != null)
    {
        disposable.Dispose();
    }
}