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# openDocument(_:)

An action method called by the Open menu command, it runs the modal Open panel and, based on the selected filenames, creates one or more `NSDocument` objects from the contents of the files.

```
@IBAction func openDocument(_ sender: Any?)
```

## Discussion

The method adds the newly created objects to the list of `NSDocument` objects managed by the document controller. This method calls [`openDocument(withContentsOf:display:completionHandler:)`](/documentation/AppKit/NSDocumentController/openDocument(withContentsOf:display:completionHandler:)), which actually creates the `NSDocument` objects.

## See Also

[`fileNamesFromRunningOpenPanel`](/documentation/AppKit/NSDocumentController/fileNamesFromRunningOpenPanel)

Returns a selection of files chosen by the user in the Open panel.


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