Linq Any in C#

Back to: CSharp LINQ and Lambda Expressions Tutorial

LINQ (Language Integrated Query) is a powerful feature in C# that allows you to query data from different sources such as arrays, lists, databases, and XML documents. One of the most commonly used LINQ operators is Any, which allows you to check if any element in a collection matches a specific condition. In this lesson, we will learn how to use Any in C#.

Let’s assume we have a collection of integers, and we want to check if any of the elements in the collection are even numbers. To achieve this, we can use the Any operator.

Here’s the code to achieve this:

var numbers = new List<int> { 1, 3, 5, 7, 8, 9 };

if (numbers.Any(number => number % 2 == 0))
{
    Console.WriteLine("At least one number is even.");
}
else
{
    Console.WriteLine("No even numbers found.");
}

In the above code, we first create a list of integers. We then use the Any method along with a lambda expression to check if any element in the collection is even. The lambda expression takes each element in the collection and checks if it’s divisible by 2. If any element is divisible by 2, the Any method returns true, otherwise, it returns false.

We then use an if statement to check the result of the Any method. If it returns true, we print the message “At least one number is even.” Otherwise, we print the message “No even numbers found.”

The output of the above code would be:

At least one number is even.

As we can see, the Any operator has determined that at least one element in the collection is even, and we have printed the appropriate message.

In conclusion, LINQ Any in C# is a powerful feature that allows you to check if any element in a collection matches a specific condition. By using this feature, you can easily determine if your data meets certain criteria and take appropriate action based on the result.