WPF DataGrid source updating on cell changed

Question

I am new to the WPF ,and i use it to build a point of sale system.

I have a DataGrid control in the main window bound to an ObservableCollection

Answer 1

The code in the accepted answer didn't work for me since the row fetched from ItemContainerGenerator.ContainerFromItem(item) results in null and the loop be quite slow.

A more simple solution to the question is the code provided here: http://codefluff.blogspot.de/2010/05/commiting-bound-cell-changes.html

private bool isManualEditCommit;
private void HandleMainDataGridCellEditEnding(
  object sender, DataGridCellEditEndingEventArgs e) 
{
 if (!isManualEditCommit) 
 {
  isManualEditCommit = true;
  DataGrid grid = (DataGrid)sender;
  grid.CommitEdit(DataGridEditingUnit.Row, true);
  isManualEditCommit = false;
 }
}