Confirmation on changing page in GridView

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Javascript

.NET

jQuery

.NET4

, +

Scenario is :
The grid view has paging enabled in it. When a user is making any change in the grid view rows. A popup should come on PageIndexChanging event to save the made changes or not. If user clicks on yes then a server side method should be called and moved to next page else simply moves to next page.

I am trying to do this using ModalDialogPopup. And able to create using

<pre lang="cs">function SubmitData() {
    var _html = document.createElement('div');
    _html.innerHTML = $("#divConfirmationModal").html();

    var options = {
        title: "Confirm Data Submission",
        width: 400,
        height: 200,
        showClose: false,
        allowMaximize: false,
        autoSize: false,
        html: _html
    };
    SP.UI.ModalDialog.showModalDialog(options);
}

but not able to bind the server side method in

function SubmitDataCallback(dialogResult) {
    if (dialogResult === SP.UI.DialogResult.OK) {
        //SaveToSPList();
    }

    if (dialogResult === SP.UI.DialogResult.cancel) {
        //MoveToNextPage();
    }
}

I don't know how to do that.