Hello Dave,
According to the description, my understanding of the question is: how to
detect if Office Word/Excel is already running before creating the
Application object.
The most commonly used ways to detect if Word/Excel is already running are:
1. Call GetObject("Word.Application") to see if it throws any exception.
In C#, we can put Marshal.GetActiveObject("Word.Application"); inside a
try-catch. If the call throws an exception like 'Operation unavailable
(Exception from HRESULT: 0x800401E3 (MK_E_UNAVAILABLE))', it indicates that
the Office application is not running at the moment.
2. Enumerate the processes (Process.GetProcesses()
and see if the
winword.exe or excel.exe is in the list.
If you have any other questions or concerns, please feel free to let me
know.
Regards,
Jialiang Ge (
[email protected], remove 'online.')
Microsoft Online Community Support
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