Dylan's code

{

            string currentUserName = Convert.ToString(txtLogUser);
            string currentPassword = Convert.ToString(txtLogPas);

            customerTableTableAdapter1.checkAccess(databaseDataSet1.customerTable, txtLogUser.Text, txtLogPas.Text);
            int resultCount = databaseDataSet1.customerTable.Rows.Count;

            if (resultCount == 1)
            {

                {
                    MessageBox.Show("You have succesfully logged in.");
                    Variables.loggedIn = true;
                    product frm = new product();
                    frm.Show();
                }
            }
            else
            {
                MessageBox.Show("The username and/or password entered is invalid, please try again.");
            }
        }