Marshal.IsComObject(Object) Method
Definition
Important
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Indicates whether a specified object represents a COM object.
public:
static bool IsComObject(System::Object ^ o);public static bool IsComObject (object o);static member IsComObject : obj -> boolPublic Shared Function IsComObject (o As Object) As BooleanParameters
- o
- Object
The object to check.
Returns
true if the o parameter is a COM type; otherwise, false.
Exceptions
o is null.
Remarks
IsComObject returns true if the class type of the instance is attributed with System.Runtime.InteropServices.ComImportAttribute or if it derives directly or indirectly from a class attributed with ComImportAttribute. The Tlbimp.exe (Type Library Importer) tool applies this attribute for you when it imports a type library.
Two other methods also determine whether a specified object represents a COM object, but the requirements for returning true differ from this method's requirements. Type.IsImport returns true if the class (or interface) is attributed with ComImportAttribute directly; it does not return true for derived types. RegistrationServices.TypeRepresentsComType returns true if the type is attributed with ComImportAttribute or derives from a type with the same GUID.
