Asp Grid View control Error in Sharepoint 2013

Hi 

I am using a Asp gridview control for Edit and Update data, the webpart is woking fine in sharepoint 2010 but when i deploy same webpart in sharepoint 2013 then it is not working properly.

Issues:

• Update function not updating data and showing only blank row
• when i m in page other than 1 and click on Editing then the gridview again comes to page 1 in Edit mode at same index.

I debug the codes but the function "On row updating" not even getting hit.

Please help me its URGENT.

Thanks and Regards

Ankur Agrawal

Ankur Agrawal