選定下拉列表的方法

1.Filetype.Items.FindByValue(act).Selected=true;
2.SetSelectedItem(this.ddlMonth,strddlmonth);
  private void SetSelectedItem(ListControl list, String value)
  {
   foreach(ListItem e in list.Items)
    if(e.Value==value)
    {
     e.Selected=true;
     return;
    }
    else
     e.Selected=false;
  }
3.
       string str8 = "1,2,3,4";
       string[] strtemp = str8.Split(',');

       foreach (string str in strtemp)
       {
           for (int i = 0; i < cblr8.Items.Count; i++)
           {
               if (cblr8.Items[i].Value == str)
               {
                   cblr8.Items[i].Selected = true;
               }
           }
       }