How to have NHibernate persist a String.Empty property value as NULL

Posted by Todd on Stack Overflow See other posts from Stack Overflow or by Todd
Published on 2010-04-07T12:57:15Z Indexed on 2010/04/07 18:03 UTC
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nhibernate

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fluent-nhibernate

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.NET

I have a fairly simple class that I want to save to SQL Server via NHibernate (w/ Fluent mappings). The class is made up mostly of optional string fields.

My problem is I default the class fields to string.empty to avoid NullRefExceptions and when NHibernate saves the row to the database each column contains an empty string instead of null.

Question: Is there a way for me to get NHibernate to automatically save null when the string property is an empty string? Or do I need to litter my code with if (string.empty) checks?

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