title: kendo UI grid dataitem set method
body: <pre><code>grid.dataItem(selectedRow) 
  </code></pre>
  
  <p>this is return the selected row which is a kendo.data.ObservableObject.</p>
  
  <p>this object has all the columns for that grid's selected row. Is there a way to iterate thru all the columns and update. 
  or do i have to do it like this: </p>
  
  <pre><code>dataitem.set("Id", 1);
  dataitem.set("name", Eric);
  dataitem.set("age", 12);
  </code></pre>