jordan says:
public void FillCountry()
   {
       clsCountry objCountry = new clsCountry(true);
       objCountry.SelectAllWhere("");
       ddlCountry.DataSource = objCountry.ListclsCountry;
       ddlCountry.DataTextField = "CountryName";
       ddlCountry.DataValueField = "CountryID";
       ddlCountry.DataBind();
       ddlCountry.Items.Insert(0, new ListItem("India", "0"));
       objCountry = null;
   }
 Replace above with the below code.
public void FillCountry()
{
    clsCountry objCountry = new clsCountry(true);
    objCountry.SelectAllWhere("");
    ddlCountry.DataSource = objCountry.ListclsCountry;
    ddlCountry.DataTextField = "CountryName";
    ddlCountry.DataValueField = "CountryID";
    ddlCountry.DataBind();
    ddlCountry.Items.Insert(0, new ListItem("India", "0"));
    ddlCountry.Items.FindByText("India").Selected = true;
    objCountry = null;
}