sharepoint列表查询取值

SPWeb site = SPControl.GetContextWeb(Context);
        SPListItemCollection items = site.Lists["内网IP池"].Items;

        zz_dl_department.Items.Clear();
        
        zz_dl_department.Items.Add(new ListItem("请选择","0"));
        foreach(SPListItem item in items)
        {
            zz_dl_department.Items.Add(new ListItem(item["所属部门"].ToString(), item["网段"].ToString()));
            
        }