摘要：
using System; using System.Windows.Forms; using System.Data.SqlClient; namespace WindowsFormsApp3 { public partial class FrmMain : Form { public FrmMain() { Initi... 阅读全文
摘要：
using System.Data; using System.Data.SqlClient; using System.Configuration; namespace WindowsFormsApp3 { public class DbHelper { private static string connStr = ConfigurationManager.ConnectionStrings[ 阅读全文