Best way to prevent early CLR garbage collection

I wrote a managed class that wraps an unmanaged C ++ object, but I found that - when using it in C # - the GC starts early while I execute a method on the object. I've read through garbage collection and how to prevent it before. One way is to use a using statement to control when the object is placed, but this puts the responsibility on the client of the managed object. I can add to the managed class:

MyManagedObject::MyMethod() {

System::Runtime::InteropServices::GCHandle handle =
   System::Runtime::InteropServices::GCHandle::Alloc(this);

// access unmanaged member

handle.Free();

      

        
        
        
      

    

}

code> This works. As a newbie to .NET, how do other people deal with this problem?

Thanks,

Johan