How can I convert DataRow to string Array?

I have some values in a DataGridRow (item Array) and I want to fetch all these values into a string array. How can I achieve this?

DataGridRow row = (DataGridRow)Lst.ItemContainerGenerator.ContainerFromIndex(k);
            DataRowView Drv = (DataRowView)row.Item;
            DataRow dr = (DataRow)Drv.Row;