Refresh the Parent showModalDialog

There are many blogs showing how to refresh the parent window when returning from a SharePoint modal window using SP.UI.ModalDialog.showModalDialog.  However, I could not find one that worked adequately  for my needs.  The use case discussed here is for launching an application page within a modal.  When the application page is submitted, the parent window should refresh.  When the modal is closed (i.e. x'd out of from upper right of the window), the parent page should not refresh.  In addition, the submit happens within an SPLongOperation using block in the code behind of the application page.  For some reason, calling the following at the end of the using statement did not work.


  operation.EndScript("window.frameElement.commitPopup();"); 


Hence the fix was performed in the JavaScript where the modal was originally launched from.  A callback function was added to the options of SP.UI.ModalDialog.showModalDialog.  This code is as follows:


  function refreshParent(result, target) {
    window.parent.location = window.location.href;
  }


The problem with this was that when the modal was canceled out of (i.e. not submitted), the parent would still refresh.  Although this is not the end of the world, it clearly lessens the user's experience.  By adding a check for the result, this can be remedied.  The entire script is as follows:


  function launchModal(url) {
    var options = SP.UI.$create_DialogOptions();
    options.url = url;
    options.dialogReturnValueCallback = Function.createDelegate(null, refreshParent);
    SP.UI.ModalDialog.showModalDialog(options);
  }


  function refreshParent(result, target) {
    if(result == 1) window.parent.location = window.location.href;
  }


Now the parent window refreshes as expected.