How to find Start and End date for a specified date in ASP.Net

DateTime lFnGetBeginningOfWeek(DateTime date)

{

return date.AddDays(-1 * (int)date.DayOfWeek).Date;

}

DateTime lFnGetEndOfWeek(DateTime aDate)

{

return aDate.AddDays(6 - (int)aDate.DayOfWeek);

}