title: Password should not contain the user's account name or parts of the user's full name that exceed two consecutive characters
body: <p>Actually, I have a little problem is I am working on app having in which a form to register user and on validation end password must not contain user's name, and must not contains consecutive 2 letters form user's name.</p>
  
  <p>Suppose user name id "Aspnetmvc"
  then password should not contain whole word  "Aspnetmvc" or even part of user name as asp, net, mvc.
  This can be solve by customize logic but what I wants to do is to be solved by programming logic, but what I want to do is to find out way solve this problem with regular expression. </p>
  
  <p>Any one have idea about this C#?</p>