When creating a new row in a DataGrid, the first time you type anything into
a DataGridTextBoxColumn box, the DataGrid adds a blank row below that and
changes the current line from a new row into one that is being edited.

If I go to the blank line on the bottom of a DataGrid and I first edit a
column that has a DataDridColumnStyle that is equal to my custom
DataGridColumnStyle I cannot get get the DataGrid to create a new line and
cause the old one to just be edited.

Any help on this will be appreciated.