title: WPF and entity Framework code first
body: <p>I would like to implement a simple WPF with a datagrid and a save button.
  when I click save button it will accept changes (row edit,cell edit, new row, delete etc)
  I tried <code>RowEditHandler</code> and <code>CollectionChange</code> event using observable collections. But I couldnt get a soluton. Can anyone please show me a simple way. 
  Using dataset (xsd), I was able to achive that simpy by sending datacontext of grid to dataset and using update function.</p>
  
  <p>thanks for help</p>