In order to support LINQ, Microsoft added extension methods to Visual Studio. These let you add new features to existing classes. LINQ includes several useful extension methods that apply to arrays, lists, and other collection objects. You can use them directly to find things such as minimum, maximum, and average values.

The following code demonstrates the Min, Max, and Average LINQ extension methods.

// Make some random values.
private void Form1_Load(object sender, EventArgs e)
{
    const int num_values = 50;
    Random rand = new Random();
    int[] values = new int[num_values];
    for (int i = 0; i < num_values; i++)
    {
        values[i] = rand.Next(0, 10000);
    }

    // Display the values.
    lstValues.DataSource = values;

    // Use LINQ extention methods to get
    // the minimum, maximum, and average values.
    txtMin.Text = values.Min().ToString();
    txtMax.Text = values.Max().ToString();
    txtAve.Text = values.Average().ToString();
}