Setting the Row Header of a Datagrid through the rows of a Datatable column using C# WPF

Question

I have a Datatable with the following information :

Column1 | Column2

1    |   A
2    |   B
3    |   C
4    |   D

With this Datatable I would like to load a Datagrid using the first column of Datatable to be the Row Header, thus

  A    B   C   D

1

2

3

4

Just put the Coluna2(At the top) I managed one way, passing the data from Datatable1 to Datatable2 and thus being able to load it to Datagrid as follows:

where Dtgrade is Datatable receiving the top column

                    for (int i = 0; i < dt.Rows.Count; i++)
                    {
                        dtGrade.Columns.Add(dt.Rows[i][1].ToString());
                    }

                    gvDados.ItemsSource = null;
                    gvDados.ItemsSource = dtGrade.DefaultView;

Now I would like to add the columns on the left side.