web.config数据库联接字符串的设置与读取

web.config

<configuration>
 <configuration>
    <connectionStrings>
       <add name="DataBaseConnectionString"
          connectionString="data source=.;Initial Catalog=DBName;User       ID=sa;Password=sa"
          providerName="System.Data.SqlClient" />
  </connectionStrings>
</configuration>

 

读取

string connString = System.Configuration.ConfigurationManager.ConnectionStrings  ["DataBaseConnectionString"].ConnectionString;