internal /*public*/ IAsyncResult BeginAspCompatExecution(AsyncCallback cb, object extraData)
{
SynchronizationContextUtil.ValidateModeForAspCompat();
if (IsInAspCompatMode)
{
// already in AspCompatMode -- execute synchronously
bool sync = true;
Exception error = _app.ExecuteStep(this, ref sync);
_ar = new HttpAsyncResult(cb, extraData, true, null, error);
_syncCaller = true;
}
else
{
_ar = new HttpAsyncResult(cb, extraData);
_syncCaller = (cb == null);
_rootedThis = GCHandle.Alloc(this);
// send requests from the same session to the same STA thread
bool sharedActivity = (_sessionId != null);
int activityHash = sharedActivity ? _sessionId.GetHashCode() : 0;
if (UnsafeNativeMethods.AspCompatProcessRequest(_execCallback, this, sharedActivity, activityHash) != 1)
{
// failed to queue up the execution in ASP compat mode
_rootedThis.Free();
_ar.Complete(true, null, new HttpException(SR.GetString(SR.Cannot_access_AspCompat)));
}
}
return(_ar);
}
// IExecutionStep implementation
void HttpApplication.IExecutionStep.Execute()
{
SynchronizationContextUtil.ValidateModeForAspCompat();
if (_code != null)
{
_code();
}
else if (_codeEventHandler != null)
{
_codeEventHandler(_codeEventSource, _codeEventArgs);
}
}