private void Btn_Add_Click(object sender, EventArgs e)
        {
            AdminAddBalanceDataForm add = new AdminAddBalanceDataForm();

            add.Show();
            add.label1.Text = "Tambah Data";
        }
        private void Btn_Update_Click(object sender, EventArgs e)
        {
            var id = userId;

            if (id == null)
            {
                MessageBox.Show("Pilih kasir terlebih dahulu");
            }
            else
            {
                AdminAddBalanceDataForm dataForm = new AdminAddBalanceDataForm();

                dataForm.Show();
                dataForm.tbId.Text       = id;
                dataForm.tbUsername.Text = username;
                dataForm.tbPassword.Text = password;
                dataForm.tbName.Text     = name;
                dataForm.tbAddress.Text  = address;
                dataForm.tbPhone.Text    = phone;

                dataForm.label1.Text = "Ubah Data";
            }
        }