MySqlCommand com = new MySqlCommand("select Username,Password from register where username ='" + username.Text + "' and password='" + password.Text + "'", conn);
int rowsCount = com.ExecuteNonQuery();


if (rowsCount==1)
{
    MessageBox.Show("done it bruh");
}
else
{
    MessageBox.Show("slaughter");
}

MySqlCommand com = new MySqlCommand(
    "select COUNT(UserName) from register where username ='"
        + username.Text + "' and password='" + password.Text + "'", conn);
int rowsCount = Convert.ToInt32(com.ExecuteScalar());