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()方法中添加下面高亮代码:
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using System.Web.Routing; using Insus.NET.DataBases; using System.Data.SqlClient; namespace Insus.NET { public class MvcApplication : System.Web.HttpApplication { protected void Application_Start() { AreaRegistration.RegisterAllAreas(); RouteConfig.RegisterRoutes(RouteTable.Routes); SqlDependency.Start(DB.ConnectionString); } protected void Application_End() { SqlDependency.Stop(DB.ConnectionString); } } }