c# - 单击按钮后回发后如何显示 div？

Question

这里我有一个 div，我在母版页中鼠标悬停期间显示它，鼠标悬停后三个 href 链接将出现在该 div 中。单击该 href 链接后，它遍历到另一个页面，回发发生并且该 div 隐藏在母版页中。我还需要在单击后显示该 div。我使用了 updatepanel 并尝试了它，但它仍然无法正常工作。这是我的代码

//分区部分

<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="Update" runat="server">
<ContentTemplate>
<div runat="server" class="divSUBMenu" id="describe" style="width: 700px; height: 20px;
 font: Arial, Helvetica, sans-serif;" onclick="show(0)">
</div>
</ContentTemplate>
</asp:UpdatePanel>

//悬停部分

 <a href="#" onmouseover="showit(0)">
 <img src="Images/Analyze_over.jpg" name="image1" width="84" height="22" border="0"
 id="image1" alt="" /></a>

//用于鼠标悬停的 Javascript(工作正常)

var submenu = new Array();
    submenu[0] = '&nbsp;<font style="font-family: Arial, Helvetica, sans-serif; font-size: 12px;"><a style="color: #FFFFFF; text-decoration: none;" href="ATrendAnalysis.aspx">Trend Analysis</a> &nbsp;&nbsp; <a style="color: #FFFFFF; text-decoration: none;" href="AEventPerformance.aspx">Event Performance</a> &nbsp;&nbsp; <a style="color: #FFFFFF; text-decoration: none;" href="ACannibalization.aspx">Cannibalization</a> &nbsp;&nbsp; <a style="color: #FFFFFF; text-decoration: none;" href="AHaloEffect.aspx">Halo Effect</a> &nbsp;&nbsp; <a style="color: #FFFFFF; text-decoration: none;" href="AVolumeDecomposition.aspx">Volume Decomposition</a></font></span>';
        var delay_hide = 500;
        var menuobj = document.getElementById ? document.getElementById("describe") : document.all ? document.all.describe : document.layers ? document.dep1.document.dep2 : "";

        function showit(which) {
                clear_delayhide();
            document.getElementById("describe").style.visibility = 'visible';
            thecontent = (which == -1) ? "" : submenu[which];
            if (document.getElementById || document.all) {
                menuobj.innerHTML = thecontent;
            }
            else if (document.layers) {
                menuobj.document.write(thecontent);
                menuobj.document.close();
            }
        }

最后下面的部分在 onclick 期间不工作，但此警报有效

function show(which) {
alert("test");
document.getElementById("describe").style.visibility = 'visible';
}

有什么建议吗？？

编辑:这是我正在点击的 href

<a style="color: #FFFFFF; text-decoration: none;" href="ATrendAnalysis.aspx">Trend Analysis</a>

Answer 1

你必须使用ClientScriptManager

http://msdn.microsoft.com/en-us/library/3hc29e2a.aspx

例子:

void Page_Load(object sender, EventArgs e)
{
    if(checkDisplayCount.Checked)
    {
        String scriptText = "";
        scriptText += "function DisplayCharCount(){";
        scriptText += "   spanCounter.innerText = " + 
            " document.forms[0].TextBox1.value.length";
        scriptText += "}";
        ClientScriptManager.RegisterClientScriptBlock(this.GetType(), 
           "CounterScript", scriptText, true);
        TextBox1.Attributes.Add("onkeyup", "DisplayCharCount()");
        LiteralControl spanLiteral = new 
            LiteralControl("<span id=\"spanCounter\"></span>");
        PlaceHolder1.Controls.Add(spanLiteral);
    }
}