i want function to insert element in List without duplicates

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old list :

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List<int> OLd = new List<int>() { 1, 1, 1, 1, 1, 1, 1, 2, 2 };

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List<int> New = new List<int>() { 1, 2 };

Posted 16-Mar-13 1:25am

3 solutions

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**Zoltán Zörgő** · Answer 1 · 2013-03-16T01:30:00

Posted 16-Mar-13 1:30am

Chinmaya C · Answer 2 · 2013-03-16T06:38:00

try with the following code:

C#

List <int> OLd = new List<int>() { 1, 1, 1, 1, 1, 1, 1, 2, 2 };
List<int> New = OLd.Distinct().ToList();

Posted 16-Mar-13 6:38am

Updated 16-Mar-13 8:55am

v2

P A N K A J · Answer 3 · 2013-03-16T05:52:00

I suggest to create a method for adding the values and add a check in the method before adding that value.

Posted 16-Mar-13 5:52am