What does "Contract can't be in try block" mean?

Posted by MatthewMartin on Stack Overflow See other posts from Stack Overflow or by MatthewMartin
Published on 2010-05-21T15:51:34Z Indexed on 2010/05/21 16:00 UTC
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c#

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code-contracts

I'm using the 3.5 library for microsoft code contracts

public object RetrieveById(int Id)
{    
    Contract.Ensures(newObject != null, "object must not be null");
    return newProject;
    //No error message if I move the Contract.Ensures to here
    //But it isn't asserting/throwing a contract exception here either           
}

I get the compiler message: "Error 18 Contract section within try block in method 'Controller.RetrieveById(System.Int32)'

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