在调试SignalR程序时,提示一个异常:When using SqlDependency without providing an options value, SqlDependency.Start() must be called prior to execution of a command added to the SqlDependency instance. 解决方法是在Global.asax.cs文件中Application_Start()和Application_End()方法…

当Insus.NET尝试解决此问题<When using SqlDependency without providing an options value, SqlDependency.Start() must be called prior to execution of a command added to the SqlDependency instance.>http://www.cnblogs.com/insus/p/5622792.html 时, 又出现另外一个警示: 解决方法是,…

From:  http://www.radmangames.com/programming/how-to-use-boost-program_options If it so happens that you’re writing a console application, then chances are you will (or should) want to pass it some parameters at the command line. By default C++ has o…

Intro: After some feedback on Part 1, and being prompted by some stackoverflow questions, I want to expand on and clarify some topics, so this is Part 1.5. Channel Handler Sharability & State Channel Options Channel Handlers As discussed previously,…

Resolution Option 1 -Using RewriteValve (can apply globally) You can use RewriteValve to disable the http methods. Take a look atdocumentation http://docs.jboss.org/jbossweb/2.1.x/rewrite.html.You will need one RewriteCond directive and one RewriteRu…

对于一个真正的企业级的应用来说,Caching肯定是一个不得不考虑的因素,合理.有效地利用Caching对于增强应用的Performance(减少对基于Persistent storage的IO操作).Scalability(将数据进行缓存,减轻了对Database等资源的压力)和Availability(将数据进行缓存,可以应对一定时间内的网络问题.Web Service不可访问问题.Database的崩溃问题等等).Enterprise Library的Caching Application…

SqlDependency的简介: SqlDependency是outputcache网页缓存的一个参数,它的作用是指定缓存失效的数据库依赖项,可以具体到数据库和表. SqlDependency能解决什么问题? Asp.Net中的cache可以设置一个过期时间,但设置多久合适呢?长了浪费,短了就失去缓存的意义了.使用SqlDependency进行缓存则可以解决这个问题. SqlDependency是.net2.0封装的一个类型,要配合sql2005或以上版本才能使用. 另外,SqlDepende…

今天使用SqlDependency,结果不起作用,失效,不管数据库怎么修改,这边都没反应,OnChange事件总是不执行,很奇怪.我打开msdn里的例子,代码复制出来,结果没问题,能执行,那剩下来的问题就是比较不同了,看看正规例子和我的代码有那些区别. 通过排除法,结果发现,SqlDependency绑定的SqlCommand对象必须要执行一下,才能将SqlDependency对象的 HasChange属性设为true,这跟我以前的想法截然不同,我以为SqlDependency对象注册好Onch…

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Configuration; using System.Data.SqlClient; using System.Data; namespace Sample2 { class Program { private static string…

http://blog.csdn.net/idays021/article/details/49661855 class Program { private static string _connStr; static void Main(string[] args) { _connStr = ConfigurationManager.ConnectionStrings["plmConnectionString"].ToString(); SqlDependency.Start(_co…