Lesson 10 - More on LINQ operators

In the previous lesson, LINQ operators in C# .NET, we started going over LINQ query operators. In today's tutorial, we're going to continue learning about operators.

Element operators

Since queries always returns a collection, there are operators with which we can access a particular element directly.

First

Returns the first element of a query result. This one is useful mainly in cases where we're only interested in the first result or if the query only returns a single element.

{CSHARP_CONSOLE}
int[] numbers = { 3, 5, 8, 5, 9, 1, 3, 4 };

var number = (from n in numbers
             where (n > 5)
             select n).First();

Console.WriteLine(number);

{/CSHARP_CONSOLE}

The query will select:

Console application
8

First with a condition

If we need to save our work, in some cases, we may specify the condition right into the First() method:

...End of the preview...
Continue further