public static void EndInvoke(IAsyncResult result, object owner)
{
AsyncResultNoResult ar = result as AsyncResultNoResult;
if (ar == null)
{
throw new ArgumentException("Result passed represents an operation not supported " +
"by this framework.");
}
ar.CheckUsage(owner);
// This method assumes that only 1 thread calls EndInvoke for this object
if (!ar.IsCompleted)
{
// If the operation isn't done, wait for it
ar.AsyncWaitHandle.WaitOne();
ar.AsyncWaitHandle.Close();
ar.m_asyncWaitHandle = null; // Allow early GC
}
// Operation is done: if an exception occured, throw it
if (ar.m_exception != null)
{
throw ar.m_exception;
}
}
protected virtual void MakeCallback(AsyncCallback callback, AsyncResultNoResult result)
{
// If a callback method was set, call it
if (callback != null)
{
callback(result);
}
}
public new static TResult EndInvoke(IAsyncResult asyncResult, object owner)
{
AsyncResult <TResult> ar = asyncResult as AsyncResult <TResult>;
if (ar == null)
{
throw new ArgumentException("Result passed represents an operation not supported " +
"by this framework.");
}
AsyncResultNoResult.EndInvoke(asyncResult, owner);
return(ar.m_result);
}