add checkbox in datagrid checkboxheader colum to mark/unmark

Question

hi guyes,
         i have wpf application in that i was taking value from sql inline query and show on                           datagrid using list i was taking one checkbox column from list taken from db heder                    name is  IsActive.
          my requirement is add check box to header of data grid i.e IsActive column and                              give name Select/deselect at same time
                  and hide name IsActive and code write for selectAll/deselectAll record
                   
                  i am trying lot but not getting proper ans so plz help