【Asp.net】DropDownList加入Tooltip

       

//在DropDownList 的 DataBound下撰寫程式碼
        protected void ddl_DataBound(object sender, EventArgs e)
        {
            ListItemCollection items = ((DropDownList)sender).Items;

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

                ListItem item = items[i];

                item.Attributes.Add("title", item.Text);

            }
        }