Thinking 'pull' rather than 'push'; I'd use a javascript timer then ajax to get changed content. ps
----- Original Message ----- From: "Peter Vertes" <[EMAIL PROTECTED]> To: <ADVANCED-DOTNET@DISCUSS.DEVELOP.COM> Sent: Friday, January 26, 2007 4:14 AM Subject: [ADVANCED-DOTNET] Streaming Data to a Webpage
Hello List, I've been presented with an interesting project but after doing some research into it I believe it is impossible to do with the requirements given by the client. The client would like to stream data to a webpage and the webpage should display the updates delivered by the data as close to real-time as possible. For instance imagine a DataGrid that has 10 ticker symbols in it. Whenever the price changes for a symbol the backend pushes the changed prices and symbols into a DataSet and the DataGrid (which is bound to the DataSet) shows the updated prices. The requirements of the client are that the users should not have to download/install anything onto their computers and no ports should be needed to be opened on the firewall besides ports 80. I've been doing some research into this but I'm not getting too far. I've tried opening a socket from ASP.NET but I can't get updates without a refresh to the page. I've looked into an AJAX solution but with AJAX you can't have an open socket. To be honest I think the only way this could be possibly done is either via a Java applet or with some ActiveX component (although I'd prefer Java over ActiveX programming). Before I told the client that besides a Java Applet solution the project could not be done I thought I'd check with the list and ask for opinions or other words of wisdom. Am I right by thinking this can only be done with a Java applet or is there another solution out there that I haven't explored ? Better yet; has anyone done anything like this before ? Thanks for all ideas/comments in advance... -Pete =================================== This list is hosted by DevelopMentor® http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com
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