Checkall checkbox for grouped data in mvc

I am getting grouped data in mvc grid(grouped on the basis of a column). I am trying to create a checkbox in the group header on clicking of which all the checkboxes within that group header gets selected.

@foreach(var group in Model.GroupBy(x=>x.Column)){
    {
        <tr class="group-header">
            <td>
                <input type="checkbox" id="checkAll" 
                 onchange="toggleSelect(this.checked)">
            </td>
            <td colspan="6">
                <span class="h3">@group.Key</span>
            </td>
        </tr> 
        foreach(var item in group)
        {
            <tr>
                <td>
                    <input type="checkbox" class="checkGroup">
                </td>
                <td>
                    ...
                </td>
            </tr>
        }   

jQuery for toggleSelect()

function toggleSelect()status{
    $('.checkGroup').prop('checked',status);
}

When I use this all the checkboxes gets checked since all the checkboxes have same class(ckeckGroup). But I need only the checkboxes within a group to be checked. And the grouping to be used is dynamic so I cannot predefine any group. How can that be done?