Hi Mike,

  Thanks for your response.

  My application is enabled with parallel process selection for all the menus, so that Load and other operations can happen asynchronously. I verified, applying null check for  Datasource and Rows properties, which did not resolve the issue. Since the Datasource null is occuring during, ReloadData of Refresh method, i am not finding appropriate check to to be applied for it.

   Any suggestions?

Thank you,

Sagar