## get_relationship_data(self, rel_id) {#System.String}

Gets the related data.


### Returns 


Returns the related data.


```python

def get_relationship_data(self, rel_id):
    ...
```


| Parameter | Type | Description |
| :- | :- | :- |
| rel_id | System.String | The relationship id. |



### See Also
* module [`aspose.cells.drawing.activexcontrols`](../../)
* class [`UnknownControl`](/cells/python-net/aspose.cells.drawing.activexcontrols/unknowncontrol)