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Namespace: Autodesk.Revit.UI Class: UIApplication

UIApplication.OpenAndActivateDocument(String)

Method
Description:
Opens and activates a Revit document.
Remarks:
This method, if successful, changes the active document. It is not allowed to have an open transaction in the active document when calling this method. Additionally, this method may not be called from inside an event handler.
Syntax
Parameters
Parameter Type Description
fileName String A full path to a revit file to be opened. The file can be either a Revit project, template, or family document.
Return Value
Type Description
UIDocument The opened document.
Exceptions
Exception Condition
ArgumentException The given 'fileName' is not a Revit file (a project, template, or family document).
ArgumentNullException Ifis passed as 'fileName'. -or- A non-optional argument was null
FileArgumentNotFoundException The file specified by 'fileName' cannot be found.
InvalidOperationException If the active document is currently modifiable.If an API event handler is currently being executed.
RevitServerCommunicationException If there is any server internal error.