private void cbbProvince_SelectedIndexChanged(object sender, EventArgs e)
{
string ProvinceNametemp = cbbProvince.SelectedItem.ToString();
string ProvinceName = "";
if (ProvinceNametemp.Contains("Tỉnh"))
{
ProvinceName = ProvinceNametemp.Substring(5);
}
if (ProvinceNametemp.Contains("Thành Phố"))
{
ProvinceName = ProvinceNametemp.Substring(10);
}
DataTable dt = SignUpController.IDProvince_Find(ProvinceName).Tables[0];
string IDTemp = dt.Rows[0][0].ToString();
int ID = int.Parse(IDTemp);
DataTable District = SignUpController.District_Show(ID).Tables[0];
cbbDistrict.Items.Clear();
foreach (DataRow dr in District.Rows)
{
string temp = dr["DistrictName"].ToString();
cbbDistrict.Items.Add(temp);
}
}