Unexpected RowState

Hi,

My problem is that changed content of a cell is not saved, due to wrong rowstate. 

If you take a look at http://screencast.com/t/t6QOoCP9UaBV you'll see that I change the content of a cell in a row. When you see the breakpoint in code that is following, you'll see that the value of the cell actually holds the proper value that I selected from FileDialog. But the RowState says "Unchanged", where I would expect a "Modified".

I can work around this by moving a row forward - but that's just ugly.     

When I hit the Save-button, this code is executed:
            QAData.DataList dl = new QAData.DataList();
            dl.SaveTegning((DataTable)gridTegning.DataSource);

The SaveTegning() method contains:

 public void SaveTegning(DataTable Tegning)
        {
            foreach (DataRow row in Tegning.Rows)
            {
                if (row.RowState == DataRowState.Added || row.RowState == DataRowState.Modified)

I did try with both EndEdit and AcceptChanges, but neither had the desired effect.

Any idea how I can obtain the proper RowState without moving row in the grid before saving (as in: what would I do with just one row)?

Best regards
Morten Snedker