## MailMergeDataType enum


Specifies the type of an external mail merge data source.

```cpp
enum class MailMergeDataType
```

### Values

| Name | Value | Description |
| --- | --- | --- |
| None | -1 | No mail merge data source is specified. |
| TextFile | 0 | Specifies that a given document has been connected to a text file via the Dynamic Data Exchange (DDE) system. |
| Database | 1 | Specifies that a given document has been connected to an Access database via the Dynamic Data Exchange (DDE) system. |
| Spreadsheet | 2 | Specifies that a given document has been connected to an Excel spreadsheet via the Dynamic Data Exchange (DDE) system. |
| Query | 3 | Specifies that a given document has been connected to an external data source using an external query tool. |
| Odbc | 4 | Specifies that a given document has been connected to an external data source via the Open Database Connectivity interface. |
| Native | 5 | Specifies that a given document has been connected to an external data source via the Office Data Source Object (ODSO) interface. |
| Default | -1 | Equals to [None](./). |


## See Also

* Namespace [Aspose::Words::Settings](../)
* Library [Aspose.Words for C++](../../)