[Mono-dev] Embedding Mono - NULL return value in C#

Robert Jordan robertj at gmx.net
Wed Dec 15 06:29:07 EST 2010

On 15.12.2010 09:51, marcus julius wrote:
> Hi,
> I call a c++ function from C# using mono.
> For instance,
> [MethodImplAttribute(MethodImplOptions.InternalCall)]
> extern internal static Object get_ai_behavior_object(int id);
> When the function returns a NULL object, there is a NullReferenceException. I think it occurs because C# tries to cast null to System.Object.
> Is there a way to avoid this without using try-catch which slows the program or a dummy Null object I need to create?

This is expected to work. Please show more code or better file
a bug with a self-contained test case.


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