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    <pre><code> public Image GetDilbert() { var dilbertUrl = new Uri(@"http://dilbert.com"); var request = WebRequest.CreateDefault(dilbertUrl); var webHandle = new ManualResetEvent(false /* nonsignaled */); Image returnValue = null; request.BeginGetResponse(ar =&gt; { //inside AsynchCallBack method for request.BeginGetResponse() var response = (HttpWebResponse) request.EndGetResponse(ar); string html; using (var receiveStream = response.GetResponseStream()) using (var readStream = new StreamReader( receiveStream , Encoding.UTF8)) { html = readStream.ReadToEnd(); } var re=new Regex(@"dyn/str_strip/[0-9/]+/[0-9]*\.strip\.gif"); var match=re.Match(html); var imgHandle = new ManualResetEvent(true /* signaled */); if (match.Success) { imgHandle.Reset(); var groups = match.Groups; var s = (groups.Count&gt;0) ?groups[groups.Count-1].ToString() :match.Value; var _uri = new Uri(dilbertUrl, s); var imgReq = WebRequest.CreateDefault(_uri); imgReq.BeginGetResponse(ar2 =&gt; { var imageRsp= (HttpWebResponse)imgReq.EndGetResponse(ar2); using (var imgStream=imageRsp.GetResponseStream()) { var im=(Image)Image.FromStream(imgStream,true,true); returnValue = (Image) im.Clone(); } imgHandle.Set(); }, new object() /*state*/); } imgHandle.WaitOne(); webHandle.Set(); }, new object() /* state */); webHandle.WaitOne(); return returnValue; } </code></pre> <p>For the Begin/EndGetDilbert() methods, you can use a technique with <code>Future&lt;T&gt;</code> as described at <a href="http://blogs.msdn.com/pfxteam/archive/2008/02/29/7960146.aspx" rel="nofollow noreferrer">http://blogs.msdn.com/pfxteam/archive/2008/02/29/7960146.aspx</a></p> <p><em>See also <a href="http://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.begingetresponse.aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.begingetresponse.aspx</a></em></p>
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    1. POHow can I easily chain two asynchronous requests together?
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    1. USMark Cidade
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    1. POHow can I easily chain two asynchronous requests together?
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    1. COYes! Exactly. Chain asynchronous callbacks. I was coding up something very similar when you posted.
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      1. USJim Mischel
    2. COThe problem isn't just about making GetDilbert() use asynchronous calls, but rather making BeginGetDilbert() and EndGetDilbert() still work.
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      1. USÐаn
    3. COFixed the code and tested it this time.
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