title: datagrid in a datagrid cell
body: <p>hey how can i put a datagrid inside other datagrid cell
  4ex-
  i have a cutomer colum with a collapse sign(or button) now when i click on the sign(or button) a new datagrid is polpulated on the same row next column with customer details .</p>
  
  <p>can any one point how it can be done?</p>