Article ID: 2494268
This article describes an All-In-One framework sample that is available for download. This code sample demonstrates a step-by-step guide that illustrates how to create a web chat application by using ASP.NET AJAX. You can get the sample package from the download icons below.
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Technical overviewYou should have some experience in chatting with friends on the web. You may think it is complicated to develop a web chat application. However, ASP.NET provides an easy and accessible way to do it. The technical overview introduces how to construct a web chat room by using AJAX.
The principle controls needed to construct a web chat room by using AJAX are not that complicated. As you know, a web chat application needs the following four basic controls:
Users input a message in the text box, and then they press the Send button. In this situation, the message is sent to the server. The message list is updated every two seconds to get the newest messages in the chat room from the server.
It is difficult to make an AJAX web chat application that behaves the same way as a Windows Form application, because you cannot maintain a continuous connection with the server. Therefore, a lot of events that could be immediately communicated between a client and server cannot be realized. The common workaround is to make the web chat application send a request every few seconds to check for server-side updates.
Sample OverviewThis code sample is separated into 4 sections:
LanguagesThis code sample contains the following programming languages:
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What is All-In-One Code Framework?All-In-One Code Framework shows most Microsoft development techniques by using code samples in different programming languages. Each example is carefully selected, composed, and documented to show one common code scenario. For more information about All-In-One Code Framework, visit the following Microsoft website:
How to find more All-In-One Code Framework samplesTo find more All-In-One Code Framework samples, search for "kbcodefx" together with related keywords on the Microsoft support Web site. Or, visit the following Microsoft website:
All-In-One Code Framework samples
For more information about how to create an AJAX-Enabled WCF service and an ASP.NET client that accesses the Service, visit the following Microsoft website:
How to create an AJAX-Enabled WCF service and an ASP.NET client that accesses the ServiceFor more information about the .NET Language-Integrated query for relational data, visit the following Microsoft website:
General information about the .NET Language-Integrated query for relational dataFor more information about how to explore rich client scripting by using jQuery, visit the following Microsoft website:
Microsoft Ajax Content Delivery Network (Microsoft Ajax CDN)
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(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.
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