检查用户ID的可用性而无需回发 [英] Check User Id Availability without postback

问题描述

我想要从数据库检查用户ID可用性的代码.我想这样做而无需回发.如果有可能不使用ajax进行操作.

请帮助我..........提前感谢

I want the code for check user id availability from database. I want to do this without post back. If any possibility to do that without use ajax.

Please help me..........Thanks in advance

推荐答案

尝试这些

替代UpdatePanel [ ASP.NET AJAX UpdatePanel的最佳替代解决方案 [ ^ ]

在那些页面的答案中检查那些链接.

Try these

Alternative to UpdatePanel[^]

Best alternative solution for ASP.NET AJAX UpdatePanel[^]

Check those links in the answers in those pages.

您要做的就是知道如何从客户端(Javascript)与服务器对话.

通过客户端(Javascript)与服务器端进行交互的方法很少:
1. XMLHttpRequest [回调 [ Web服务调用 [ PageMethod [

All you want is to know how to talk to server from client side (Javascript).

There are few ways to interact with server side through client side(Javascript):
1. XMLHttpRequest[^]
2. Callback[^]
3. WebService call[^]
4. PageMethod[^]

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