private void BindCountry2()
{
List <Country> list = new List <Country>();
list = CountryBLL.GetCountryByContinent(uoDropDownListContinent2.SelectedValue);
uoDropDownListCountry2.Items.Clear();
uoDropDownListCountry2.DataSource = list;
uoDropDownListCountry2.DataTextField = "CountryName";
uoDropDownListCountry2.DataValueField = "CountryID";
uoDropDownListCountry2.DataBind();
uoDropDownListCountry2.Items.Insert(0, new ListItem("--Select Country--", "0"));
}