>>I have a method that have the last few arguments being passed by reference (ByRef). But after the methods ends, the value returned do not have the changes applied by the methods. What would cause a string to be passed as though it was by value and not by reference. ( There are other methods with arguments being passed by reference and they work fine - I think).
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>See the discussion here. String is an immutable reference type.

Ok, do you have a link?