Creating TCP SYN Flood Using C#

    i am hanged up in a very strange problem , i am trying to create
   TCP SYN Flood using C# in WINDOWS environment . till now i have created
   TCP & IP headers, but  when i try to send these selfmade Header over the network using
  RAW sockets so i gets an exception "A Blocking operation was interrupted by a call to
  WSACancelBlockingCall ". now then when i remove the SetSocketOption() so the
 Exception vanishes.
           Plz let me know how to deal this. also if possible plz let me have some usefull
          links  about SYN Flood in C# .