ADO 型別對應至 .NET Framework 型別
ADO Recordset 或 Record 物件中的值會轉換為 .NET Framework 型別，以儲存至 DataSet。下列表格顯示 ADO 型別對應至 .NET Framework 型別。
| ADO 型別 | .NET Framework 型別 |
|---|---|
| adEmpty | Null |
| adBoolean | Int16 |
| adTinyInt | SByte |
| adSmallInt | Int16 |
| adInteger | Int32 |
| adBigInt | Int64 |
| adUnsignedTinyInt | 提升為 Int16 |
| adUnsignedSmallInt | 提升為 Int32 |
| adUnsignedInt | 提升為 Int64 |
| adUnsignedBigInt | 提升為 Decimal |
| adSingle | Single |
| adDouble | Double |
| adCurrency | Decimal |
| adDecimal | Decimal |
| adNumeric | Decimal |
| adDate | DateTime |
| adDBDate | DateTime |
| adDBTime | DateTime |
| adDBTimeStamp | DateTime |
| adFileTime | DateTime |
| adGUID | Guid |
| adError | ExternalException |
| adIUnknown | object |
| adIDispatch | object |
| adVariant | object |
| adPropVariant | object |
| adBinary | byte[] |
| adChar | string |
| adWChar | string |
| adBSTR | string |
| adChapter | 不支援 |
| adUserDefined | 不支援 |
| adVarNumeric | 不支援 |