Can any one suggest me,
How to create Customer relationship in c# code (dynamically).
Please check following link to create relationship
http://msdn.microsoft.com/en-us/library/cc156290.aspx
to associate records
http://mscrm-developer.blogspot.com/2008/09/creating-records-for-many-to-many.html
Hope this helps. If you get answer of your question, please mark the response as an answer and vote as helpful ! Vikram !