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

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