Simple Count based on a Condition using LINQ

Here’ a simple example demonstrating how to perform a count on a List<> based on a condition

C#

class Program
{
    static void Main(string[] args)
    {
        List<Students> students = new List<Students>();
        students.Add(new Students() { StudentId = 1, Marks = 8.0f });
        students.Add(new Students() { StudentId = 2, Marks = 5.0f });
        students.Add(new Students() { StudentId = 3, Marks = 7.0f });
        students.Add(new Students() { StudentId = 4, Marks = 9.5f });
        students.Add(new Students() { StudentId = 1, Marks = 9.0f });

        var topStudCount = students.Count(r => r.Marks >= 9.0f);
        Console.WriteLine("Students with Marks >=9 are {0}", topStudCount);
        Console.ReadLine();
    }
}

class Students
{
    public int StudentId { get; set; }
    public float Marks { get; set; }
}

VB.NET

Use this Converter Tool

OUTPUT

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About The Author

Suprotim Agarwal, ASP.NET Architecture MVP 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 has also written an EBook 51 Recipes using jQuery with ASP.NET Controls.

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