Get distinct values from list

Question

    public List GetEmployeeTransferListForHR(TimecardDataContext TimecardDC)
    {
        List objEmployee         


        

Answer 1

Get Distinct using GroupBy

objEmployeeTransferList.GroupBy(x => x.empId).Select(g => g.First()).ToList();

Answer 2

There is a distinct method in linq which should do the trick.

http://msdn.microsoft.com/en-gb/library/bb348436.aspx

Answer 3

Have you try:

objEmployeeTransferList = TimecardDC.MAS_EMPLOYEE_TRANSFER.Where(
   employee => employee.HR_ADMIN_IND=="Y").Distinct().ToList();     

Answer 4

Have try making it

.Distinct().ToList();

You can refer here LINQ: Distinct values

Answer 5

List<int> ids = objEmployeeTransferList
                   .Select(e => e.empId)
                   .Distinct()
                   .ToList();

Also you can make this on server side without creating in-memory employee list with all admin records:

List<int> ids = TimecardDC.MAS_EMPLOYEE_TRANSFER
                   .Where(e => e.HR_ADMIN_IND == "Y")
                   .Select(e => e.empId)
                   .Distinct()
                   .ToList();