blocks|key|1643780|text|为此，请使用ASP.NET+3.0/3.5，或者如果您使用的是较早版本，请使用ASP.NET+Ajax。但是，您列出的两个示例都是使用Ajax拉取信息，而不是推送信息。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1643781|entityMap|0|LINK|mutability|MUTABLE|url|http://www.asp.net/ajax/^0|13|C|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

To do that, use ASP.NET 3.0/3.5 or if you are using earlier versions, use <a href="http://www.asp.net/ajax/" rel="nofollow noreferrer">ASP.NET Ajax</a>. However both examples listed by you, are using Ajax to pull information, not push it.

blocks|key|1428951|text|我将创建一个可调用的Web+Service脚本，并使用JQuery。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1428952|下面是使用JQuery调用ASP.NET+(ASMX)+web服务的一个很好的指南：|1428953|http://encosia.com/2008/03/27/using-jquery-to-consume-aspnet-json-web-services/|1428954|现在，您只需以对您的应用程序有意义的任何时间间隔轮询此web服务。|1428955|此外，ASP.NET+AJAX的问题是它有点头重脚轻。通过使用JQuery，你可以从常规的ASP.NET+web表单，从MVC，或者实际上使用任何其他web技术(经典的ASP，PHP，随便什么)调用你的web服务，所有这些都是从客户端使用的，在我看来，最好的javascript框架。:)|1428956|entityMap|0|LINK|mutability|MUTABLE|url|http://www.jquery.org/|1^0|R|6|0|0|0|0|27|1|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@$A|10|B|11|1|12]]|C|$]]|$1|H|3|I|5|6|7|13|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|14|8|@]|9|@]|C|$]]|$1|L|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|S]]|T|$5|O|P|Q|C|$R|G]]]]

I would create a script callable Web Service and use <a href="http://www.jquery.org" rel="nofollow noreferrer">JQuery</a>.

Here's a good guide on using JQuery to call an ASP.NET (ASMX) web service:

<a href="http://encosia.com/2008/03/27/using-jquery-to-consume-aspnet-json-web-services/" rel="nofollow noreferrer">http://encosia.com/2008/03/27/using-jquery-to-consume-aspnet-json-web-services/</a>

Now, you would just poll this web service at whatever interval makes sense for your application.

Also, the problem with ASP.NET AJAX is it's a bit top heavy. By using JQuery, you can call your web service from a regular ASP.NET web form, from a View in MVC, or actually using any other web technology (classic ASP, PHP, whatever) all from the client side using just, in my view, the best javascript framework around. :)

blocks|key|1429048|text|您正在寻找的推送技术称为Comet。请参阅this+article获取一些指针。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1429049|entityMap|0|LINK|mutability|MUTABLE|url|http://ajaxian.com/archives/comet-not-as-painful-as-you-think^0|L|C|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

The push technique you are looking for is called Comet. See <a href="http://ajaxian.com/archives/comet-not-as-painful-as-you-think" rel="noreferrer">this article</a> for some pointers.

blocks|key|1429108|text|试试WebSync，这是一个为.NET/IIS构建的可伸缩comet服务器。它可以让你很好地从服务器上推送数据，并且非常容易地与ASP.NET项目集成(只需要几个web.config条目)。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1429109|entityMap|0|LINK|mutability|MUTABLE|url|http://www.frozenmountain.com/websync^0|2|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Try out <a href="http://www.frozenmountain.com/websync" rel="nofollow noreferrer">WebSync</a>, a scalable comet server built for .NET/IIS. It'll let you push data nicely from the server, and integrates super easily with ASP.NET projects (a couple web.config entries is all it takes).

blocks|key|1429136|text|既然您提到了ASP.NET，那么您就应该使用SignalR。在这里查看我的另一个答案：Instant+notifications+like+Facebook|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1429137|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/11409563/instant-notifications-like-facebook/11410184#11410184^0|6|7|M|7|17|Z|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]]|D|@$9|S|A|T|1|U]]|E|$]]|$1|F|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

Since you mention <code>ASP.NET</code> you should be using <code>SignalR</code>.
See my other answer here: <a href="https://stackoverflow.com/questions/11409563/instant-notifications-like-facebook/11410184#11410184">Instant notifications like Facebook</a>

What's the best way to push info from a server to a web client? I know it's possible to setup sockets with Silverlight and Flash but I want to stay way from those two technologies.

Gmail seems to do a great job of polling the servers for updated emails and even their chat programs work great (all working in my web browser). Any ideas on the best way to do something like this but using asp.net?

Edit:
If I have to poll, i'd like to poll the server every 2 or 3 seconds. So I'm not sure how to do this without bringing the web server to it's knees under heavy usage.

asp.net http server push to client

服务器

将信息从服务器推送到web客户端的最佳方式是什么？我知道用Silverlight和Flash设置套接字是可能的，但我想远离这两种技术。Gmail似乎在轮询服务器更新电子邮件方面做得很好，甚至他们的聊天程序也运行得很好(都可以在我的web浏览器中运行)。除了使用asp.net之外，有没有什么最好的方法可以做到这一点？编辑...

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