Compare two List<string> using LINQ

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In this post, we will see how to compare two List<string> and list the elements found in one List<string> but not in the other. We will be using the Enumerable.Except method

C#

static void Main(string[] args)
{
    List<string> lstOne =
        new List<string>() { "Jim", "Jack", "Kate", "Nope" };

   List<string> lstTwo =
       new List<string>() { "Jack", "Nope", "Jim" };

    IEnumerable<string> lstNew = null;

    // Compare two List<string> and display items of lstOne not in lstTwo
    lstNew = lstOne.Except(lstTwo, StringComparer.OrdinalIgnoreCase);

    PrintList(lstNew);
    Console.ReadLine();
}

static void PrintList(IEnumerable<string> str)
{
   foreach (var s in str)

       Console.WriteLine(s);
    Console.WriteLine("-------------");
}

OUTPUT

Read some more tips in my article over here Some Common Operations using List<string>

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About The Author

Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

Follow him on twitter @suprotimagarwal.