nHibernate versus LLBLGen Pro

Question

I am trying to work out with ORM tool to move over to and have narrowed it down to two candidates.

nHibernate or LLBLGen Pro

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Answer 1

The major difference is that LLBLGen is a code generator, while NHibernate is a "true" ORM library.

LLBLGen advantages:

• Easy to use model designer. Can import your existing database schema
• Fully typed object model and query language

LLBLGen disadvantages:

• You need the designer application to change your model
• Not free
• Can bloat your code because a lot of code is generated

NHibernate advantages:

• No designer application needed. Only code
• Widely used (based on the most popular Java ORM, Hibernate)
• Very powerful for mapping any data model you can imagine
• Open source

NHibernate disadvantages:

• Hard to learn
• Not as strongly typed as one would like (especially queries)

Of course, this is just my personal point of view...