title: How to refresh the datagrid values based on the addition or updation or deletion between two user controls?
body: <p>There are two user controls
  1. First User control, having only Datagrid views only
  2. Second User control, having the Details &amp; operations like addition, modification &amp; deletion button.
  Both the user control will be placed in the Main window.</p>
  
  <p>Whenever i am selecting a row in the grid particular data is displayed in the second user control (Using PRISM eventAggregator). But when adding or updating or deleting it is not happening updating the first user control data grid.  How to achieve this.</p>