public void GetAllAdvSizes() { AdvertisementController objAdvCon = new AdvertisementController(); List <AdvertisementInfo> lstInfo = objAdvCon.GetAllSizes(GetSiteID); ddlhdnAdvSizes.DataSource = lstInfo; ddlhdnAdvSizes.DataTextField = "Size"; ddlhdnAdvSizes.DataValueField = "SizeID"; ddlhdnAdvSizes.DataBind(); }