How to close jQuery Dialog within the dialog?

How to close jQuery Dialog within the dialog without using the close button?

Inside the Dialog is a simple form request. If a successful submission occurs, then the UI dialog automatically closes and refreshes the parent page:

<script type="text/javascript">
    $(document).ready(function () {
        $("#form-dialog").dialog({
            autoOpen: true,
            modal: true,
            width: 200,
            draggable: true,
            resizable: true
        });
    });
</script>

<div id="form-dialog" title="Form Submit">
    <form action="default.aspx" method="post">
        <input type="text" name="name" value=" " />    
        <input type="submit" value="submit" />

        <a href="#" id="btnDone">CLOSE</a>

        <script type="text/javascript">
        $(document).ready(function () {
            $("#btnDone").click(function () {
                $(this).dialog('close');
            });
        });
        </script>
    </form>
</div>

you can close it programmatically by calling

$('#form-dialog').dialog('close')

whenever you want.

Try This

$(this).closest('.ui-dialog-content').dialog('close'); 

It will close the dialog inside it.

You need

$('selector').dialog('close');

Close from iframe inside a dialog:

window.parent.$('.ui-dialog-content:visible').dialog('close');