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.NET Forum / .NET Framework / New Users / January 2007comparing two generic Lists
hi, In the simplest form, i have two generic lists and i want to compare if the elements in each of them exactly match. list<double> list1 = new list<double>(); list1.AddRange(new double[]{1,2}); list<double> list2 = new list<double>(); list2.AddRange(new double[]{1,2}); list1 == list2 returns false Can someone point me to the right direction. TIA Irfan The equality operator in this case is comparing the references to the two lists, not their contents. If you wish to compare the contents, you'll need to write your own code to do so. > hi, > [quoted text clipped - 13 lines] > TIA > Irfan | In the simplest form, i have two generic lists and i want to compare if the | elements in each of them exactly match. [quoted text clipped - 6 lines] | | list1 == list2 returns false The default implementation fo the equality operator is to use ReferenceEquals, which simply compares the references to the objects, not their contents. You will have to iterate over both lists, comparing elements one by one. Joanna  SignatureJoanna Carter [TeamB] Consultant Software Engineer >Can someone point me to the right direction. Compare element by element. Mattias SignatureMattias Sjögren [C# MVP] mattias @ mvps.org http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com Please reply only to the newsgroup. thanks for all the replies, irfan > >Can someone point me to the right direction. > > Compare element by element. > > Mattias
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