自动处理过长字符串显示的Web控件

namespace cnblogs.birdshome.WebControls
{
    /**//// <summary>
    /// Summary description for AutoLabel.
    /// </summary>
    [DefaultProperty("Text"),
        ToolboxData("<{0}:AutoLabel runat=server></{0}:AutoLabel>")]
    public class AutoLabel : System.Web.UI.WebControls.Label
    {
        protected override void CreateChildControls()
        {
            base.CreateChildControls ();
            this.Width = Unit.Percentage(100);
            this.Attributes["onmouseover"] =
                 "if ( this.clientWidth < this.scrollWidth ) this.title = this.innerText; else this.title = '';";
            this.Attributes.CssStyle["white-space"] = "nowrap";
            this.Attributes.CssStyle["overflow"] = "hidden";
            this.Attributes.CssStyle["text-overflow"] = "ellipsis";
        }
    }
}
    AutoLabel继承至Label控件，默认宽度为"100%"，当把AutoLabel放入容器类元素中后，其内容的宽度受容器大小自动调整。并且当AutoLabel出现"..."号后，鼠标放在上面，其ToolTip会自动显示器完整内容。 如下图：