i have a string (the letters will never be in the same order):

TFTADFDAAFDADADDAFFDTFFTDFTFTDTTAFDAFADTAAATFDTADAFFTFTDDFDAFFTAT

1) i know it is always going to 65 characters (no numbers)
2) it will only have the letters ADFT

i want to loop through each row of data and check if the data contains this.

Code:
System.Text.RegularExpressions.Regex.IsMatch()
is this possible? if so, i need some help writing the expression.