Question

Javascript

var form = document.getElementById('date_budget');
pop('', 'exp_upd', '95', '80');
form.action = "test.aspx";
form.target = 'exp_upd';
form.submit();

HTML

<form id="date_budget" name="date_budget" method="post">
    <table>
    <tr>
        <!--#include file="zone.inc" -->
        <td id='mlodg_loc'><select name="loc" id="loc">
                <option value="Select Location">Select Location</option>
            </select></td>
        <td>
            <select name="month" id="month">    
                <option value="1">1</option>
            </select>
        </td>
        <td>
            <select name="year" id="year">
                <option value="2013">2013</option>
            </select>
        </td>
    </tr>
    </table>
</form>

The above code opens a popup window, but when I change the html by adding the runat attribute, I am getting “Validation of viewstate MAC failed”, and some extra junk. the modified html is below

<form id="date_budget" name="date_budget" method="post" runat="server">
    <table>
        <tr>
            <!--#include file="zone.inc" -->
        <td id='mlodg_loc'><select name="loc" id="loc" runat="server">
            <option value="Select Location">Select Location</option>
            </select></td>
            <td>
                <select name="month" id="month" runat="server"> 
                <option value="1">1</option>
                </select>
            </td>
            <td>
                <select name="year" id="year" runat="server">
                <option value="2013">2013</option>
                </select>
            </td>
        </tr>
    </table>
</form>

Is there any workaround to use both the runat server and using the same element in JS, without using those asp tags something like <%= hidBT.ClientID %> I don’t want that any other way.

Answer 1

1. Try to add this <pages enableViewStateMac="false"> in your web.config (or)

2. Try to Change this <form id="date_budget" name="date_budget" method="post"> to

   this <form id="date_budget" name="date_budget" runat="server">

   It shouldn’t specify method or action