asp.net传递值从JS / jQuery来code后面的C＃ [英] asp.net passing values from JS/jquery to code behind c#

问题描述

我曾尝试每在code中的aspx页面从JS脚本发送screen.width vlaue到C＃和落后的同时，可能的方式我可以看到screen.width被正确分配它从来没有被分配到我的隐藏字段值。

I have tried "every" possible way of sending the screen.width vlaue from the JS script on the aspx page to the c# in the code behind and while I can see the screen.width being assigned correctly it never gets assigned to my hidden field value.

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">

   <asp:HiddenField ID="hiddenfield" runat="server" />

   <script type="text/javascript" language="javascript">
       $(function(){ 
       $('#hiddenfield').val(screen.width); 
    });
    </script>

other content

</asp:Content>

和背后的code：

protected void btnChartGo_Click(object sender, EventArgs e)
{
   string s = hiddenfield.Value;
}

不管是什么我试着S始终，

No matter what I try s is always ""

蹊跷的上面，每个人似乎都在做这样说，这和它的作品？

Something wrong with the above, everyone seems to be doing it like that and it works?

推荐答案

这应该得到正确的选择：

This should get the right selector:

$('#<%= hiddenfield.ClientID %>').val(screen.width); 

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