Read DOM and send values to server
You're creating a lot of jQuery objects in there. It would be much more efficient to just create them once. For example:

var postData = {},
    cData = {},
    $this = $(this),
    $parent = $this.parent(),
    $balance = $parent.children(".balance");



As a general rule, I try to avoid calling any method on the same object more than once. For any methods you need to call repeatedly, just call it once and store the result.


The following line seems to be incorrect. You're passing an object to the .html() method (which it doesn't accept):

$('#desiredStatus').html(cData);

//Did you mean to do this instead?
$('#desiredStatus').html(cData.desiredStatus);

You are creating a new modal dialog every time a .editButton element is clicked. You could move the creation of the dialog outside of the event handler and just call $("#dialog").dialog("open") when you want it to appear.
The comparison balanceInqury == 'NaN' will never be true. JavaScript is funny like that, NaN !== NaN. There is a built-in isNaN function you can use though:

postData.balance = isNaN(balanceInqury) ? cData.Balance : balanceInqury;

For shorter code you could replace your call to $.ajax with a call to the shorthand $.post method. If you'd rather not do that, you can at least remove the error property from the options object, since it doesn't do anything in your case:

$.post('/url/to/postto', { postData: postData}, function (data) {
    //You make another unnecessary jQuery object in here. Cache the #dialog object!
});

Finally, you could change the code in the #changeStatus click event handler by passing a function to the .html method, which in my opinion is a bit neater:

$('#currentStatus').html(function () {
    return $(this).html() === "Disabled" ? "Enabled" : "Disabled"
});
$('#desiredStatus').html(function () {
    return $(this).html() === "disable" ? "enable" : "disable";
});