C#中如何读取webconfig.xml里的数据库连接字符串

Question

System.Configuration.ConfigurationSettings.AppSettings["strConn"]

Answer 1

System.Configuration.ConfigurationSettings.AppSettings["strConn"]

Answer 2

System.Configuration.ConfigurationSettings.AppSettings["strConn"];

Answer 3

ConfigurationSettings.AppSettings["strConn"];

Answer 4

首先在<configuration> 中添加 element
<appSettings>
<add key="sqlConnectionString" value="server=;database=T;user id=;password="/>

</appSettings>写代码
sqlConnstring=ConfigurationSettings.AppSettings["sqlConnectionString"]