My developer is trying to convince 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 a number of websites for about a year and am concerned about switching to another platform.
I have heard good things about blogengine.net. Is
there a way I can import all my wordpress posts into it?
Any kind of help would be greatly appreciated!