_Type.IsInstanceOfType Method (Object)
Provides COM objects with version-independent access to the Type.IsInstanceOfType method.
Assembly: mscorlib (in mscorlib.dll)
Return ValueType: System.Boolean
true if the current Type is in the inheritance hierarchy of the object represented by o, or if the current Type is an interface that o supports. false if neither of these conditions is the case, or if o is null, or if the current Type is an open generic type (that is, ContainsGenericParameters returns true).
Available since 1.1