Leak in RuntimeBinder when using “dynamic” keyword with __ComObject

Question

Does anybody know if there is a way of preventing a memory leak in RuntimeBinder when using \"dynamic\" keyword with __ComObject instances in C#?

I got the following

Answer 1

The solution in my case was to replace:

dynamic o = System.Activator.CreateInstance(t);

with:

object o = System.Activator.CreateInstance(t);
dynamic d = o;

The memory leak no longer occurs having the workaround applied.

Answer 2

I had a similar problem: Using "dynamic" caused a memory leak.

I solved this in the following way:

using (dynamic attr = curve.Attributes)
{
  if (attr != null)
    return attr.InternalLabel;
}