public static void khoitao()
{
frm_MAIN = new frmManHinhChinh();
frm_Dangnhap = new frmDangNhap();
frm_Doimatkhau = new frmDoiMatKhau();
frm_Quanlytaikhoan = new frmQuanLiTaiKhoan();
}
private void button1_Click(object sender, EventArgs e)
{
DataAccess.connect = txtconnect.Text;
try
{
DataAccess.OpenConnection();
DataAccess.CloseConnection();
}
catch
{
MessageBox.Show("Không thể kết nối");
return;
}
this.Hide();
frmManHinhChinh fr = new frmManHinhChinh();
fr.ShowDialog();
}