creating input fields row automatically in wpf

creating input fields row automatically in wpf

i am making the form for sales system so that user write data in one row
and automatically row adds to add data for other products, i have a
datagrid in wpf and i have input fields in datagrid, there are 6 fields in
one row, what i need when i write in first field then automatically inputs
fields row adds under the current row for new data.