PDFのページ数の取得の方法:Please tell me how to obtain PDF number of pages


Please tell me how to obtain PDF number of pages.
An error occurred trying to get it with GetPDFPages ().
Please teach me.

@matrix99999 Download xaml file from below link

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Dear .sir.
Thank you very much.
I was worrying for two days.

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Excuse me.
There is something I would like to teach.
There are places where two points are not understood in the activity.

1 startInfo.Arguments = "/ A " "page = {2} "

2 Red frame of attached file
If you can tell it, I am fortunate.