public override object WaitForPendingOperationsToComplete(object invocationResult)
{
try
{
_currentContext.WaitForPendingOperationsToComplete();
return(invocationResult);
}
catch (Exception e)
{
throw new AsyncInvocationException(e);
}
}
/// <summary>
/// 同步等待action方法执行完成
/// 创建新的同步上下文关联执行action
/// 执行完成后切换为原始同步上下文
/// </summary>
/// <param name="action">要等待的同步或异步方法</param>
/// <exception cref="ArgumentNullException"></exception>
/// <returns>当action有异步操作返回true</returns>
public bool WaitAction(Action action)
{
if (action == null)
{
throw new ArgumentNullException();
}
var previousContext = SynchronizationContext.Current;
try
{
var currentContext = new AsyncSynchronizationContext(this);
SynchronizationContext.SetSynchronizationContext(currentContext);
action.Invoke();
return(currentContext.WaitForPendingOperationsToComplete() > 0L);
}
finally
{
SynchronizationContext.SetSynchronizationContext(previousContext);
}
}
