How to solve this Error ???? Need URGENT ANSWER !!!

Question

this project was made by using devexpress version 9 , then when i got this project i used devExpress version 11 , i am using visual studio 2010 , now the problem occuring is that when i build this project i got 77 errors in only 1 master page .... here are the pics attached so please kindly sort out my problem hurry up ... i am working on this project i don't have time .... here's the link :

 

https://drive.google.com/file/d/0B8NFUJX6CxVzM2VlMXBuTW95VHc/edit?usp=sharing