C#连接数据库时connectionStrings配置

<connectionStrings> 
<add name="ConnectionStringName" connectionString="Data Source=服务器名;Initial Catalog=数据库名;User ID=用户;Password=密码" providerName="System.Data.SqlClient" /> 
< /connectionStrings> 

原文：https://www.cnblogs.com/dinggf/p/11774915.html