eduardosheep
New Member
In a follow up to my previous question, I want to get the value of the hidden input field from the child page codebehind. I tried HtmlInputHidden hdnID = (HtmlInputHidden)Page.Master.FindControl("ctl00_hdnField"); but I get a "null" value. A snippet of the Masterpage is: <head runat="server"> <title> <asp:ContentPlaceHolder ID="TitleContent" runat="server"></asp:ContentPlaceHolder> <asp:Literal ID="Literal2" runat="server" Text=" : Logistics Management" /> </title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link href="http://stackoverflow.com/questions/15689859/~/css/styles.css" rel="stylesheet" type="text/css" /> <asp:ContentPlaceHolder ID="ScriptCssContent" runat="server"> </asp:ContentPlaceHolder></head><body><form id="form1" runat="server"> ...... ...... ...... <div id="container"> .... .... .... <div id="content" style="z-index:0;"> <asp:HiddenField ID="hdnField" runat="server" Value=""/> .... .... .... <asp:ContentPlaceHolder ID="MainContent" runat="server"> </asp:ContentPlaceHolder> </div> </div></form>On my Child aspx page, I have this javascript block: window.onload = function() { var newDate = new Date(); var hidField = document.getElementById("ctl00_hdnField"); if (hidField != null) hidField.value = http://stackoverflow.com/questions/15689859/newDate.toLocaleString();}When I "Add Watch" to document.getElementById("ctl00_hdnField") the value is correct. Question: How would I access the value inside hdnField control, from codebehind?