How to call all sub-called methods on the same thread which different from the main thread?

I have the following sceanrio:

void Method_A()
{
    Method_B();
}

void Method_B()
{
    Method_C();
}

Now I do this:

Thread myThread = new Thread(Method_A);
myThread.Start();

and I get the following exception:

This operation failed because the QueryInterface call on the COM component for the interface with IID '{9149349D-5A91-11CF-8700-00AA0060263B}' failed due to the following error: The application called an interface that was marshalled for a different thread. (Exception from HRESULT: 0x8001010E (RPC_E_WRONG_THREAD)).

How to call all sub-called methods on the same thread which different from the main thread?