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


 
Function pangram2(s As String) As Boolean
    Const sKey As String = "abcdefghijklmnopqrstuvwxyz"
    Dim sLow As String
    Dim i As Integer
 
    sLow = LCase(s)
    For i = 1 To 26
      If InStr(sLow, Mid(sKey, i, 1)) = 0 Then
        pangram2 = False
        Exit Function
      End If
    Next
    pangram2 = True
End Function
 