title: Check if row is new in CollectionViewSource
body: <p>I have a CollectionViewSource (cvs) which has strongly typed DataTable as it's source. Cvs.View is set as DataGrid's ItemsSource. I want to update, insert and delete data from a database based on changes in DataGrid. I have successfully done update, and i have an idea for delete, but for insert i have some problems. I tried to do it by handling CurrentChanging event of cvs.View but row state is always Detached and it should be Added. Here is my code:</p>
  
  <pre><code>private void View_CurrentChanging(object sender, CurrentChangingEventArgs e)
  {
      if (cvs.View.CurrentItem != null)
      {
          var dataRow = ((cvs.View.CurrentItem as DataRowView).Row) as MyDataSet.MyTableRow;
          if (dataRow.HasChanges())
          {
              //do update - works
          }
          dataRow.EndEdit(); // without this line RowState is Unchanged when it should be Added
          if (dataRow.RowState == DataRowState.Added)
          {
              //do insert - never goes here, RowState is Detached when it should be Added
          }
      }
  }
  </code></pre>
  
  <p>Is this the right way to do it? Am I missing something? Thanks in advance.</p>
  
  <p>EDIT: DataGrid binding:</p>
  
  <pre><code>dataGrid1.ItemsSource = cvs.View;
  </code></pre>