protected void btnAddCity_Click(object sender, EventArgs e)
{
AdminDb.AddCity(Convert.ToInt32(ddSelectNewState.SelectedValue), tbNewCityName.Text, cbNewMajorCity.Checked, Session["UserName"].ToString());
pnlAddCity.Visible = false;
pnlBackdrop.Visible = false;
BindDataToGridView();
}