Weeks of dates range

private string GetWeeks(DateTime date1, DateTime date2)

        {

            string weeks = string.Empty;

            DateTime date = date1;

            int weekNumber = 1;

            while (date <= date2)

            {

                weeks += "Week " + weekNumber.ToString() + "- (Start Date): ";

                weeks += date.ToShortDateString() + " to (End Date) ";

                date = date.AddDays(6);

                if (date > date2)

                    date= date2;

                weeks += date.ToShortDateString();

                date = date.AddDays(1);

                weeks += Environment.NewLine;

                weekNumber++;

            }

            return weeks;

           

        }