How to find the records which are not in a arraylist

Hi
The explanation is like below.
i have a arraylist which contains
arraylist _upsRange=new arraylist{}
_upsRange array list contains  {"13.11.2009","14.11.2009","18.11.2009"}.
iam building the datecodebasicobj lile below

foreach (IDateCodeBasicDTO val in lineDetails.DateCodeBasics)
                 {
                     DateCodeBasicDTO _dateCode = new DateCodeBasicDTO();
                     if (val.ItemDateCode != null)
                     {
                         _dateCode.CountUnitCode = val.CountUnitCode;
                         _dateCode.IouSize = val.IouSize;
                         _dateCode.ItemDateCode = val.ItemDateCode;
                         _dateCode.LayoutBcode = val.LayoutBcode;
                         _dateCode.LineNumber = val.LineNumber;
                         _dateCode.LocationCode = val.LocationCode;
                         _dateCode.Quantity = val.Quantity;
                         _dateCode.UpdTstmpField = val.UpdTstmpField;
                         datecodeBasicObj.Add(_dateCode);
                     }

                 }

datecodebasicobj {"10.11.2009","11.11.2009","12.11.2009"}."13.11.2009","14.11.2009","18.11.2009"}.
i need to find out  the records in datecodebasicobj which not in upsRange forecastlist.
the output will be {"10.11.2009","11.11.2009","12.11.2009"}
for (int i = 0; i <= _upsRange.Count; i++)
            {
                var datecodelist = from d in datecodeBasicObj
                                   where d.ItemDateCode != _upsRange[0].ToString                                         select d;

            }

pls help me and send the logic for the above code.



codefile.txt
n_srikanth4Asked:
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xoperatorCommented:
Hi,

Here is the logic that you need, notice that the needed filtered values will be stored in a new list of strings called cleanList.

            List<string> cleanList = new List<string>();

            for (int i = 0; i <= datecodebasicobj.Count; i++)
            {
                for (int x = 0; x <= _upsRange.Count; x++)
                {
                    if(datecodebasicobj[i] != _upsRange[x])
                    {
                        cleanList.Add(datecodebasicobj[i]);
                    }
                }
            }

0
xoperatorCommented:
If you see any compilation errors please tell me, and i will help you ...
0
DmitryVasilievCommented:
Use LINQ "Except" method: http://msdn.microsoft.com/en-us/library/bb300779.aspx

double[] numbers1 = { 2.0, 2.1, 2.2, 2.3, 2.4, 2.5 };
double[] numbers2 = { 2.2 };

IEnumerable<double> onlyInFirstSet = numbers1.Except(numbers2);

foreach (double number in onlyInFirstSet)
    Console.WriteLine(number);
0

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n_srikanth4Author Commented:
GOOD
0
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