Show and hide Gridpanel on click of Fileupload Save button

I need to show or hide a gridpanel on submission of the Fileupload control.Also i need to populate the gridpanel with the datastore once i render it.Kindly help me in this regard.

Try:

Code:

---

myform.getForm().on({
  'beforeaction': function() {
    grid.hide();
  },
  'actioncomplete': function() {
    grid.show();
  }
});

---

and

Code:

---

mygrid.on('render', function(c) {
  c.store.load();
});

---

Thanks fyr earlier reply.This is the updated requirement which i got.

Step 1

I have a Fileupload control inside a Form panel control.Upload the file to a server location.This is done without any errors.

Step 2

Once i had uploaded the file by clicking the Save button I had to show or hide the Gridpanel with data.

Kindly help me in this regard.