private void button3_Click(object sender, EventArgs e) { QUANLI main = new QUANLI(); this.Hide(); main.Show(); main.FormClosed += (s, ev) => this.Close(); }
private void btn_dangNhap_Click(object sender, EventArgs e) { SqlConnection conn = new SqlConnection(@"Data Source=.;Initial Catalog=QuanLySieuThi;Integrated Security=True"); string sqlSelect = @"select nv.ChucVu from NHANVIEN nv, TAIKHOANNHANVIEN tk where nv.MaNhanVien = tk.MaNhanVien and tk.TenDangNhap ='" + txt_tenDangNhap.Text + "' and tk.MatKhau = '" + txt_matKhau.Text + "'"; conn.Open(); SqlCommand cmd = new SqlCommand(sqlSelect, conn); cmd.CommandType = CommandType.Text; SqlDataReader reader = cmd.ExecuteReader(); if (reader.Read() == true) { if (reader[0].ToString() == "Nhân viên quản lí") { QUANLI main = new QUANLI(); this.Hide(); main.Show(); main.FormClosed += (s, ev) => this.Close(); } else if (reader[0].ToString() == "Nhân viên phân phối") { PHANPHOIHANGHOA main = new PHANPHOIHANGHOA(); this.Hide(); main.Show(); main.FormClosed += (s, ev) => this.Close(); } else { THUNGAN main = new THUNGAN(); this.Hide(); main.Show(); main.FormClosed += (s, ev) => this.Close(); } } else { MessageBox.Show("Ban dang nhap chua thanh cong "); txt_tenDangNhap.Text = ""; txt_matKhau.Text = ""; txt_tenDangNhap.Focus(); } }