我有一个asp.net DROPDOWNLIST与自动回启用。它不填充动态，它的价值是固定的HTML code：

I have an asp.net Dropdownlist with autopostback enabled. It is not populated dynamically, its values are fixed in the HTML code :

<asp:dropdownlist id="ddlReportView" runat="server" autopostback="True" onselectedindexchanged="ddlReportView_SelectedIndexChanged" enableviewstate="true">
    <asp:listitem  text="Snapshot" value="SNAPSHOT"></asp:listitem>
    <asp:listitem  text="Detailled" value="DETAILLED"></asp:listitem>
    <asp:listitem  text="Review" value="REVIEW"></asp:listitem>
    <asp:listitem  text="Review Summary" value="REVIEW_SUMMARY"></asp:listitem>

</asp:dropdownlist>

如果我选择一个项目，重新加载，显示了不同的格式列表页。我的问题是，当我点击后退按钮浏览器，DropDownList的值仍然是选择的最后一个值。

If I select an item, it reloads the page to display a list with a different format. My problem is that when I click the back browser button, the dropdownlist's value is still the last value selected.

示例：

起初，该列表是在Snaphshot模式：

At first the list is in Snaphshot mode:

用户，然后点击评测总结方式：

User then clicks on Review Summary mode:

该页面现在显示的评论摘要网格，一切正常：

The page now displays the review summary grid, all is OK:

用户presses返回按钮，网格显示在快照模式（这是确定），但 下拉仍显示评论摘要！

User presses the back button, grid is displayed in snapshot mode (which is OK), BUT the dropdown still shows "Review Summary"!

我尝试设置使用javascript选择的价值，但它不工作。有没有人有这个问题，或者知道如何解决这个问题？

I tried setting the value of the select using javascript, but it does not work. Has anybody had that problem, or knows how to fix that?

感谢。

推荐答案

我设法利用这一个JavaScript的工作jQuery的...

I managed to get the javascript working on this one using jQuery...

$(document).ready(function() {
    //Reset drop down list
    $("#<%= dropDownList1.ClientID %> > option:first").attr("selected", "selected");        
});

如果初始值应该是快照选项...

or if the initial value should be the 'SNAPSHOT' option...

$(document).ready(function() {
    $("#<%= dropDownList1.ClientID %>").val("SNAPSHOT");
});