private static string connStr        {            get            {                SqlConnectionStringBuilder sb = new SqlConnectionStringBuilder();                sb.DataSource = "127.0.0.1";                sb.InitialCatalog = "数据库名称";                sb.UserID = "登陆名";                sb.Password = "登陆密码";                sb.IntegratedSecurity = false;                return sb.ConnectionString;            }        }