C#2010做航空机票预订管理系统登录界面有问题
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
namespace 航空机票预订管理系统
{
public class LinkDatabase
{
string strcon = @"Server=(local);database=book_ticket;uid=sa;pwd=920220";
public bool updatedb(string sql)
{
SqlConnection con = new SqlConnection(strcon);
con.Open();
try
{
SqlCommand cmd = new SqlCommand(sql, con);
cmd.ExecuteNonQuery();
return true;
}
catch
{
con.Close();
return false;
}
}
public DataTable dsresult(string ordersql)
{
SqlConnection conn = new SqlConnection(strcon);
conn.Open();
SqlDataAdapter adapter = new SqlDataAdapter(ordersql, conn);
DataTable dataset = new DataTable();
adapter.Fill(dataset);
conn.Close();
return dataset;
}
}
}
-------------------------连接数据库
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace 航空机票预订管理系统
{
public partial class login : Form
{
public static bool canlog = false;
public string struser = "";
public int UTy