RE: Progress bar for web service?
- From: stcheng@xxxxxxxxxxxxxxxxxxxx ("Steven Cheng")
- Date: Thu, 06 Mar 2008 03:28:02 GMT
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\viewkind4\uc1\pard\lang2052\f0\fs20 Hi Brad,
\par
\par From your description, you have some large objects that will be transfered in WCF service, and you're wondering how to monitor the transfer progress of such storng-typed objects without using streaming based transfer model, correct?
\par
\par Based on my research, I'm afraid it is not quite supported to get the transfer status of such strong-type objects in WCF. This is because without using the streaming model, the only means to detect such transfer status is through monitoring the underlying network transfer status. However, this is not exposed(encapsulated internally) in WCF network stack, so far I haven't found any good interface to inject into it. Therefore, my suggestion is that you should still consider the streamming + serialization approach.
\par
\par Sincerely,
\par
\par Steven Cheng
\par
\par Microsoft MSDN Online Support Lead
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\par \pard\li720 --------------------
\par From: Bradley Plett <plettb@xxxxxxxxxxxxxxxx>
\par Subject: Progress bar for web service?
\par Date: Wed, 05 Mar 2008 12:12:16 -0700
\par Message-ID: <1hrts3tm5obuojvf3mcc0ef0tvgne9qbnq@xxxxxxx>
\par
\par
\par I am aware that showing progress for file transfers is relatively easy
\par with WCF since it can be done using a stream (see
\par http://www.codeproject.com/KB/WCF/WCF_FileTransfer_Progress.aspx for a
\par good example). However, I would like to show progress for a strongly
\par typed object. Is there an easy way to do that? I realize I could do
\par this using a stream as well, but I would need to handle the
\par serialization/deserialization myself in this case.
\par
\par I would think there should be a way of hooking into events at a lower
\par level than the object transfer, but I certainly don't have a clue how!
\par
\par As an example, I'd like to call the following method asynchronously
\par and then provide status updates:
\par
\par [WebMethod()]
\par public myBigObject MyCrazyMethod()
\par
\par Any help would be appreciated.
\par
\par Thanks!
\par Brad.
\par \pard
\par
\par }
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