How i know which checkbox is checked.

Question

I have a checkbox in a loop so how i know which checkbox is checked.

<div style="overflow-x:auto;">
<table id="customers">
<caption><h3>Assign Privileges</h3></caption>
<tr>
<th>Modules</th>
@foreach (var action in ViewBag.AllAction)
{
<th>@action.Action_name</th>
}
<th></th>
</tr>
@foreach (var data in ViewBag.allmodel)
{
<tr>
<td>@data.Controller_Name</td>
@foreach (var ac in ViewBag.AllAction)
{
<td>
<input type="checkbox" class="allchkbox" />
</td>
}
</tr>
}
</table>
</div>

This is my code i have checkbox with same class . this is my view .i want to check that which module checkbox ix checked