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How do I determine if an object is a COM object? I need to call Marshal.FinalReleaseComObject on all COM objects in an array of type Object.
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To determine whether an object is a specific type, you can use your language's type comparison keyword or construct. For example, you can use the TypeOf… Is construct in Visual Basic or the is keyword in C#. The GetType method is inherited by all types that derive from Object.
You can check object type in Java by using the instanceof keyword. Determining object type is important if you're processing a collection such as an array that contains more than one type of object. For example, you might have an array with string and integer representations of numbers.
In VB.NET, you need to use the GetType method to retrieve the type of an instance of an object, and the GetType() operator to retrieve the type of another known type. Once you have the two types, you can simply compare them using the Is operator.
Marshal.IsComObject
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typeof(myObject).IsCOMObject
or
instanceOfMyObject.GetType().IsCOMObject
You can call GetType() and inspect the IsCOMObject property
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