connectionstringsconnectionstrings属性未被初始化，求大虾解救我吧！

如何取得app.config中connectionStrings的值

1.先在程序中导入包using System.Configuration; 2.或是在右边项目名中添加外键引用 System.Configuraton; xml文件配置如下： <?xml version="1.0" encoding="utf-8" ?> <configuration> <configruations> </configurations> <connectionStrings> <add name="DataBaseOwner" (数据库拥有者) connectionString="dbo"(类似sql)> <add name="MySchoolConnectionString" connectionString=" Data Source=。

;Initial Catalog=MySchool; User ID=sa; Password=12345 " providerName=" System.Data.SqlClient " </connectionStrings> </configuration>

ASP.NET <connectionStrings>与<connectionStrings/> 跟 </connectionStrings> 有什么区别?

汗.没区别呀. <connectionStrings>(开始) </connectionStrings>(结束)是配对的. 也可用这种 <connectionStrings/> 直接结束.

ConnectionStrings属性尚未被初始化

<add name="TrainConnStr" connectionString="Data Source=.SQLEXPRESS; AttachDbFilename=|DataDirectory|Database.mdf; Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient"/>这些错了，应该为 <add name="TrainConnStr" connectionString="Data Source=.SQLEXPRESS; datebase=Database; uid=sa;pwd=123456;" providerName="System.Data.SqlClient"/> 把Database.mdf附加到sqlserver数据库中。

connectionstrings属性未被初始化，求大虾解救我吧！

string conString =System.Configuration.ConfigurationManager.AppSettings["cylxhConn"]; 是找web.config下的<AppSettings>下面的cylxhConn 而不是<connectionStrings>下面的cylxhConn，把AppSettings换成connectionStrings