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Visual Studio does not show the original location of rethrown inner exception in C#
// Inside DpmEntrypoint static class.
public static object Invoke(Delegate d, object[] args)
{
    try
    {
        // Invoke directly if not networked.
        if (LocalNode.Singleton == null)
            return d.DynamicInvoke(args);

        // Get the network name of the object and the name of the method.
        string objectName = (d.Target as ITransparent).NetworkName;
        string methodName = d.Method.Name;

        // Get our local node and invoke the method.
        return LocalNode.Singleton.Invoke(objectName, methodName, args);
   }
   catch (Exception ex)
   {
        ex.Rethrow();
        return null;
    }
}

// Inside ExceptionExtensions static class.
public static void Rethrow(this Exception ex)
{
    if (ex is TargetInvocationException)
        ex.InnerException.Rethrow();
    else
    {
        typeof(Exception).GetMethod("PrepForRemoting",
            BindingFlags.NonPublic | BindingFlags.Instance)
            .Invoke(ex, new object[0]);
        throw ex;
    }
}

namespace Rethrow {
    [System::Runtime::CompilerServices::Extension]
    public ref class ExceptionExtensions abstract sealed
    {
    public:
        [System::Runtime::CompilerServices::Extension]
        static void Rethrow(System::Exception^ s)
        {
            std::rethrow_exception(std::copy_exception<System::Exception^>(s));
            throw;
        }
    };
}

catch (Exception ex)
{
    throw;
    return null;
}