Return the First Element of a Sequence in LINQ

If you have a List<string> and want to quickly retrieve the first item of the sequence, use FirstOrDefault()

Enumerable.FirstOrDefault() returns the first element of a sequence, or a default value if the sequence contains no elements. For eg: Running the following query returns 'Jack'

C#


void Main()


{


    List<string> list = new List<string>() { "Jack", "And", "Jill", "Went", "Up", "The", "Hill" };


    var first = list.FirstOrDefault();


    Console.WriteLine(first);


}




VB.NET


Private Sub Main()


    Dim list As New List(Of String)(New String() {"Jack", "And", "Jill", "Went", "Up", "The", "Hill"})


    Dim first = list.FirstOrDefault()


    Console.WriteLine(first)


End Sub




Similarly if FirstOrDefault is used on an empty list of integers, it returns 0

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About The Author

Suprotim Agarwal
Suprotim Agarwal, ASP.NET Architecture MVP (Microsoft Most Valuable Professional) works as an Architect Consultant and provides consultancy on how to design and develop Web applications.

Suprotim is also the founder and primary contributor to DevCurry, DotNetCurry and SQLServerCurry. He is the Editor of a Developer Magazine called DNC Magazine. He has also written two EBooks 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook

Follow him on twitter @suprotimagarwal

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