ASP.NET 使用 web.config 的 connectionStrings 連線

<!--webconfig-->
<connectionStrings>
<add name="ConnectionString" connectionString="server= server ip ; user=userid ;pwd=userpassword;database=dbname"/>
</connectionStrings>

using System.Configuration; //加這個 //WINFORM 需將System.Configuraction加入參考。 

string strConn = ConfigurationManager.ConnectionStrings["ConnectionString"].ToString();

=================== appSetting ===================================

<!--webconfig-->
<appSettings>
<add name="ConnectionString" connectionString="server= server ip ; user=userid ;pwd=userpassword;database=dbname"/>
  </appSettings>

string strCon = ConfigurationManager.AppSettings["ConnectionString"];