I just bought a condo in BKK, and has received the blue book without my name. 
 

My property agent was telling me to go to the district office to put my name in the blue book. But I have read somewhere that the district office won’t put in name for foreigners. So, what are the options for me?

You are correct, only Thais can go in the blue book, foreigners go in the equivalent yellow book for the property and you get that from the local ampher. The process of getting and going in a yellow book can vary depending on the ampher.

if you search for yellow book, you should find lots of previous threads about it.