Channel 9 Forums - Tech Off - using Response.Flush() to send specific data to client http://mschnlnine.vo.llnwd.net/d1/Dev/App_Themes/C9/images/feedimage.png Channel 9 Forums - Tech Off - using Response.Flush() to send specific data to client http://channel9.msdn.com/Forums Channel 9 keeps you up to date with the latest news and behind the scenes info from Microsoft that developers love to keep up with. From LINQ to SilverLight – Watch videos and hear about all the cool technologies coming and the people behind them. http://channel9.msdn.com/Forums en Tue, 21 May 2013 03:43:01 GMT Tue, 21 May 2013 03:43:01 GMT Rev9 6 -6 -1 Tech Off - using Response.Flush() to send specific data to client Hi all!

I need to send an accepted response to the client. However, I need to send only the specific data and not all the extra html page data.

Currently my code behind looks like this:

Response.Write("<CallBackResponse>Accepted</CallBackResponse>");
Response.Flush();

This however sends a response that looks like this: (I only want the portion in bold to be sent.)

<CallBackResponse>Accepted</CallBackResponse>    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">    <html xmlns="http://www.w3.org/1999/xhtml">  <head><title>   Payment Approved  </title><link href="style.css" rel="stylesheet" type="text/css" />      <style type="text/css">          #makePayment          {              width: 247px;          }          body           {           font-family : Calibri;          }          </style>        </head>  <body>      <form name="form1" method="post" action="BookSave.aspx" id="form1" style="width:100%; height:100%; text-align:center;">  <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwULLTEzOTM0ODg4MzMPZBYCAgMPZBYCAgEPZBYCAgUPZBYEAgMPDxYCHgRUZXh0BRM5NDIzMTIxMjEzMTU0NjE4OTM3ZGQCCw9kFgxmD2QWAgIBD2QWAgIDDw8WAh8ABQczNjAwLjAwZGQCAQ9kFgICAQ9kFgICAQ8PFgIfAAUEVmlzYWRkAgIPZBYCAgEPZBYCAgEPDxYCHwAFD0RlcG9zaXQgUGF5bWVudGRkAgMPZBYCAgEPZBYCAgEPDxYCHwAFCk5SIHZhbiBXeWt

 

Any ideas on how to accomplish this?

Thanks in advance! 

]]> http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/e617e35d23734e708d74a14d00775718#e617e35d23734e708d74a14d00775718 Mon, 21 Jan 2013 07:14:30 GMT http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/e617e35d23734e708d74a14d00775718#e617e35d23734e708d74a14d00775718 Juan Venter 6 http://channel9.msdn.com/Niners/lesmemphis/Discussions/RSS Tech Off - using Response.Flush() to send specific data to client What happens if you put Response.End() instead of Response.Flush()?

]]> http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/c3623924466b437da392a14d0079ab2c#c3623924466b437da392a14d0079ab2c Mon, 21 Jan 2013 07:22:58 GMT http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/c3623924466b437da392a14d0079ab2c#c3623924466b437da392a14d0079ab2c evildictaitor 6 http://channel9.msdn.com/Niners/evildictaitor/Discussions/RSS Tech Off - using Response.Flush() to send specific data to client Hi, same data gets sent (flushed), but .End() will end the entire thread. So no code will be executed after I called .End()

]]> http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/5c3b2271999f4516a279a14d007c08b7#5c3b2271999f4516a279a14d007c08b7 Mon, 21 Jan 2013 07:31:35 GMT http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/5c3b2271999f4516a279a14d007c08b7#5c3b2271999f4516a279a14d007c08b7 Juan Venter 6 http://channel9.msdn.com/Niners/lesmemphis/Discussions/RSS Tech Off - using Response.Flush() to send specific data to client Try set HttpResponse.SuppressContent to true, then write your own content there.

Note that this property only has effect before Response.Flush() or any of the Page/Control.Render() method are called, so call it as early as possible, ideally at Page_Load().

]]> http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/876b8da36add45dfa506a14d0083946b#876b8da36add45dfa506a14d0083946b Mon, 21 Jan 2013 07:59:04 GMT http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/876b8da36add45dfa506a14d0083946b#876b8da36add45dfa506a14d0083946b cheong 6 http://channel9.msdn.com/Niners/cheong/Discussions/RSS Tech Off - using Response.Flush() to send specific data to client

, lesmemphis wrote

Hi, same data gets sent (flushed), but .End() will end the entire thread. So no code will be executed after I called .End()

Surely that's what you want? Once you have no more data to send to the client (i.e. after your final <CallBackResponse>Accepted</CallBackResponse>) you should call Response.End() which will immediately send the data you've written to Response and then get ready for the next incoming request.

]]> http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/5f925773031142b09291a14e012667c5#5f925773031142b09291a14e012667c5 Tue, 22 Jan 2013 17:51:53 GMT http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/5f925773031142b09291a14e012667c5#5f925773031142b09291a14e012667c5 evildictaitor 6 http://channel9.msdn.com/Niners/evildictaitor/Discussions/RSS Tech Off - using Response.Flush() to send specific data to client @lesmemphis: If you want to send non-HTML data, surely it's better to use a generic handler (.ashx) rather than a full web form (.aspx)? It would literally just be the following:

<%@ WebHandler Language="C#" %>
using System.Web;

public class YourHandler : IHttpHandler 
{
    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/xml";
        context.Response.Write("<CallbackResponse>Accepted</CallbackResponse>");
    }

    public bool IsReusable 
    {
        get { return false; }
    }
}

]]> http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/fb2c66fd9c844c97adc2a15000e3792f#fb2c66fd9c844c97adc2a15000e3792f Thu, 24 Jan 2013 13:48:12 GMT http://channel9.msdn.com/Forums/TechOff/using-ResponseFlush-to-send-specific-data-to-client/fb2c66fd9c844c97adc2a15000e3792f#fb2c66fd9c844c97adc2a15000e3792f Sven Groot 6 http://channel9.msdn.com/Niners/Sven Groot/Discussions/RSS