protected void btnDelete_Click(object sender, EventArgs e)
{
int user = Convert.ToInt32(dropUser.SelectedValue);
int res = dbcon.deleteUser(user);
rowUser.Visible = false;
rowSubmit.Visible = false;
lblSubmission.Visible = true;
lblSubmission.Text = "User is successfully deleted. \nResponse Code:" + (res == 1 ? "0200" : "0500");
}