Appendix C. Data Marshaling
When calling between the runtime environment and existing COM interfaces, the CLR performs automatic data marshaling for CLR types into compatible COM types. Table C-1 describes the C# to COM default data type mapping.
Table C-1. C# type to COM type mapping
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Equivalently named struct |
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Equivalently named enum |
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Equivalently named interface |
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Equivalently named |
[a] COM dates are less precise, causing comparison problems. | |
Table C-2. C# modifier/COM attribute mapping
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C# modifier |
COM attribute |
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<no modifier> |
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<return value> |
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