[WPF] DataGrid: add a new line, what is the best solution?

Question

Hello everyone,

in my WPF application, the user can add a new line, so I added in the definition of the DataGrid:

CanUserAddRows = "True"

In the current structure of the DataGrid are 6 columns:

1) the first two are not editable (so do not expect a <DataGridTemplateColumn.CellEditingTemplate> in XAML

2) the others are editable via Combobox (prevendono a <DataGridTemplateColumn.CellEditingTemplate> in XAML with relative ComboBox)

In the case in which the user must add a new row, should select the values of the various columns via Combobox populated by DB.

According to you, what would be the best solution for this purpose?

Thank You.