My developer is trying to persuade me to move to .net from PHP.

I have always disliked the idea because of the expenses.
But he's tryiong none the less. I've been using WordPress on numerous websites for about a
year and am concerned about switching to another
platform. I have heard excellent things about blogengine.net.
Is there a way I can transfer all my wordpress content into it?
Any help would be greatly appreciated!