ADO连接SqlServer的两种方式

<configuration>
<connectionStrings>
<add name="linq1" connectionString="Data Source=servername;initial catalog=DBName;persist security info=true;user id=sa;password=sa;"/>
</connectionStrings>
</configuration>

protected static string faceconn = ConfigurationManager.ConnectionStrings["linq1"].ConnectionString;

<appSettings>
<add key="linq2" value="data source=ServerName;Initial Catalog=DBName;user id=sa;password=sa;Connect Timeout=800000;"/>
</appSettings>

protected static string baseconnstring = ConfigurationManager.AppSettings["linq2"].ToString();