FindMax for a variable number of parameters of any IComparable type, returns the largest value from the provided parameters.

FindMax.cs

// using System;
// using System.Linq;

/// <summary>
/// Find the maximum value from a variable number of parameters of any IComparable type.
/// </summary>
/// <typeparam name="T">Type of paramaters to compare.</typeparam>
/// <param name="max">Variable number of parameters of any type that implements the IComparable<T> interface.</param>
/// <returns>The largest value from the provided parameters.</returns>
public T FindMax<T>(params T[] max) where T : IComparable<T>
{
    T largestValue = max.Max();
    return largestValue;
}

// Implementation examples:
private void Example()
{
    // Max ints
    int maxInt = FindMax(12, 7, 21, 4, 18); // returns 21

    // strings comparing char by char
    string[] strings = { "dog", "rock", "robot", "ham" };
    string largestString = FindMax(strings);      // returns "rock"
}