Asp.net用户登陆模块(C#).

Asp.net用户登陆模块(C#)privatevoidbtn_login_Click(objectsender,System.EventArgse){//创建连接对象MyConnSqlConnectionMyConn=newSqlConnection(System.Configuration.ConfigurationSettings.AppSettings["myconn"]);try{//判断数据库连接是否打开if(MyConn.State!=ConnectionState.Open){//打开数据库连接MyConn.O