Home Database Mysql Tutorial sql server主动推送客户端更新数据

sql server主动推送客户端更新数据

Jun 07, 2016 pm 05:38 PM
server client Push data renew

小谈需求: 最近工作上接到一个需求,做一个web展示数据的报表,最好能实时更新,不限制所用技术。 第一个问题:web服务器推送给浏览器新数据,一开始我想到的最快的最简单的方法就是。c#还可以同过异步请求来自己写长轮询。 遇到的第二个问题,就是数据库如

小谈需求:

最近工作上接到一个需求,做一个web展示数据的报表,最好能实时更新,不限制所用技术。

第一个问题:web服务器推送给浏览器新数据,一开始我想到的最快的最简单的方法就是。c#还可以同过异步请求来自己写长轮询。

遇到的第二个问题,就是数据库如何通知web服务器更新数据,下面便是sql server2008的推送了,通过sql server的触发器,当数据表有变化时(增,删,改)就通过tcp请求服务器,服务器会在启动后开启端口一直监听,随时等待通信请求。当收到请求后,就从数据库读取新数据,,推送给浏览器。整体大概就这样。

下面是数据库通知服务器。这是一个 winform的demo ,winfom就相当于我们展示数据的服务器了。

最后demo图:

现在我插入一条数据:

然后再看那个客户端:

刚插入的数据已经出现了哦。 客户端代码:

winform:

程序启动后,开启端口监听,如果有收到通信,则通知 dataview更新数据。

using System;

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