Using Reflection with COM Interop

Question

After an interop call, I get back a COM object. I know this object will be one of three possible COM classes (Class1, Class2, Class3), but do not know which one in runtime.<

Answer 1

In C# 4.0, dynamic would be ideal for this type of duck-typing.

Until then, I wonder if VB.Net would be better, with Option Strict Off to allow late binding against object.

Worst case: write it in VB.Net, then use reflector to write the C# for you ;-p

Here's an example, that requires a reference to Microsoft.VisualBasic.dll, but is fine in C#:

public static object GetValue(object obj, string propertyName)
{
    return RuntimeHelpers.GetObjectValue(NewLateBinding.LateGet(obj, null,
         propertyName, new object[0], null, null, null));
}