鼠标移到datalist或者是grivdview上显示全部内容

<script>
$("td.TIP").mouseover(function (e) {
        this.myTitle = this.title;
        this.title = "";
        var toolTip = "<div id='tooltip'>" + this.myTitle + "</div>";
        $("body").append(toolTip);
        $("#tooltip").css({
            "position": "absolute",
            "padding": "5px",
            "background": "#F0F0E8",
            "border": "1px gray solid",
            "top": (e.pageY + y) + "px",
            "left": (e.pageX + x) + "px"
        }).show(200);
    }).mouseout(function () {
        this.title = this.myTitle;
        $("#tooltip").remove();
    }).mousemove(function (e) {
        $("#tooltip").css({
            "background": "#F0F0E8",
            "padding": "5px",
            "border": "1px gray solid",
            "top": (e.pageY + y) + "px",
            "left": (e.pageX + x) + "px"
        })
    })
</script>

<td class="TIP" title='<%#Eval("IntNewsContent")%>'><%# BaseClass.CheckStr(Eval("IntNewsContent"), 5)%></td>

public static string CheckStr(object strValue, int Len) //字符串截取函数，如果长度大于30，则只显示前30个字符
    {
        return (strValue.ToString().Length > Len) ? strValue.ToString().Substring(0, Len) + ".." : strValue.ToString();
    }