//登陆用户
private void button_登录_Click(object sender, EventArgs e)
{
user us = new user();
try
{
if (textBox_用户名.Text.Length <= 0)
{
MessageBox.Show("请输入用户名");
}
else
if (us.user_live(sql, textBox_用户名.Text.Trim()) == false)
{
MessageBox.Show("该用户不存在");
}
else
if (us.user_land(sql, this, textBox_用户名.Text.Trim(), textBox_密码.Text.Trim()))
{
if (!this.live(us.get_lx(sql, textBox_用户名.Text.Trim()), us.get_id(sql, textBox_用户名.Text.Trim())))
{
add(us.get_lx(sql, textBox_用户名.Text.Trim()), us.get_id(sql, textBox_用户名.Text.Trim()));
}
this.Visible = false;
操作窗口 f = new 操作窗口(sql, us.get_id(sql, textBox_用户名.Text.Trim()), us.get_lx(sql, textBox_用户名.Text.Trim()));
f.ShowDialog();
}
}
catch (Exception cv)
{
MessageBox.Show(cv.Message);
}
}
public 退出界面(操作窗口 c)
{
InitializeComponent();
this.f = c;
}