| VCL Object and Component | .NET |
| EOleError | System.Exception |
| EOleException | System.Exception |
| EOleRegistrationError | System.Exception |
| EOleSysError | System.Exception |
| TAutoIntfObject | System.Object |
| TAutoObject | System.Object |
| TAutoObjectFactory | System.Object |
| TComClassManager | System.Object |
| TComObject | System.Object |
| TComObjectFactory | System.Object |
| TComServerObject | System.Object |
| TTypedComObject | System.Object |
| TTypedComObjectFactory | System.Object |