private void submit_Login_Click(object sender, EventArgs e) { if (userName.Text == String.Empty || userPass.Text == String.Empty) { MessageBox.Show("Please fill in all the fields"); } else { if (roleCMB.SelectedIndex > -1) { if (roleCMB.SelectedItem.ToString() == "Admin") { if (userName.Text == "Admin" && userPass.Text == "Admin") { ProductForm prod = new ProductForm(); prod.Show(); this.Hide(); } else { MessageBox.Show("Admin access only"); } } else if (roleCMB.SelectedItem.ToString() == "Cashier") { connect.Open(); SqlDataAdapter sda = new SqlDataAdapter("Select count(8) from cashierTbl where cashName='" + userName.Text + "' and cashPass='******'", connect); DataTable dt = new DataTable(); sda.Fill(dt); if (dt.Rows[0][0].ToString() == "1") { CashierPOS cash = new CashierPOS(); this.Hide(); CashName = userName.Text; cash.Show(); } else { MessageBox.Show("No matching account"); } connect.Close(); } } else { MessageBox.Show("Please select a role"); } } }