Pangram checker

You are encouraged to solve this task according to the task description, using any language you may know.
A pangram is a sentence that contains all the letters of the English alphabet at least once.

For example:   The quick brown fox jumps over the lazy dog.



Task

Write a function or method to check a sentence to see if it is a   pangram   (or not)   and show its use.



Related tasks

   determine if a string has all the same characters
   determine if a string has all unique characters


using System;
using System.Linq;
 
static class Program
{
    static bool IsPangram(this string text, string alphabet = "abcdefghijklmnopqrstuvwxyz")
    {
        return alphabet.All(text.ToLower().Contains);
    }
 
    static void Main(string[] arguments)
    {
        Console.WriteLine(arguments.Any() && arguments.First().IsPangram());
    }
}