ConnectionStringBuilder对象存储连接字符串

            SqlConnection conn = new SqlConnection();
            SqlConnectionStringBuilder connstrbd = new SqlConnectionStringBuilder();
            connstrbd.DataSource = @".\SQLEXPRESS";
            connstrbd.IntegratedSecurity = true;
            connstrbd.InitialCatalog = "MyDB";
            conn.ConnectionString = connstrbd.ConnectionString;

 

            SqlConnection conn = new SqlConnection();
            string connstr="Data Source=.\SQLEXPRESS;Intergrated Security=True;Database=MyDB;";
            SqlConnectionStringBuilder connstrbd = new SqlConnectionStringBuilder(connstr);