DropDownListDisplay(ArrayList Input,DropDownList Inputddl, string CompareValue)

{

           for(int i = 0;i<Input.Count;i++)

           {

                      ListItem aItem = Input[i] as ListItem;

                      Inputddl.Items.Add(aItem);

           }

           if(CompareValue != "")  Inputddl.SelectedIndex =            Inputddl.IndexOf (Inputddl.Items.FindByVlue(CompareValue));

}

参数：ArrayList,需要绑定的数据

       DropDownList,被绑定的下拉列表

       CompareValue,一个string型的比较参数,用来设置下拉列表初始选项