public IAsyncResult BeginProcessRequest(object sender, EventArgs eventArgs, AsyncCallback cb, object extraData)
{
Session["AsyncIsCompleted"] = null;
Label1.Text = "BeginGetAsyncData: thread #" + Thread.CurrentThread.ManagedThreadId;
Trace.Write("BeginGetAsyncData", Label2.Text);
//Response.Write("<p>BeginProcessRequest starting ...</p>");
AsyncOperation = new AsyncOperationPattern(CallBackResult, this.Context, extraData);
AsyncOperation.StartAsync();
_Observer = new Observer<AsyncOperationPattern, AsyncViewer>(AsyncOperation, this);
Session["label3"] = Label3;
Label2.Text = "BeginProcessRequest queued ...";
//Response.Write("<p>BeginProcessRequest queued ...</p>");
return m_MyRequest.BeginGetResponse(cb, Session["label3"]);
}
protected void Timer1_Tick(object sender, EventArgs e)
{
try
{
Label3.Text = Session["label3"] as string;
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
if (AsyncOperation != null && AsyncOperation.IsCompleted)
{
Timer1.Enabled = false;
Button1.Enabled = true;
AsyncOperation = null;
}
}
protected void Button2_Click(object sender, EventArgs e)
{
try
{
_Halted = true;
AsyncOperation = null;
Button1.Enabled = true;
//if (operationPattern != null) operationPattern.Stop();
}
catch (Exception ex)
{
;
}
Timer1.Enabled = false;
Button1.Enabled = true;
}
