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I'm sorry about my title may be it make you confusing (it's just I don't know what words should I use). My problem is I don't want to allow user to open my application multiple time. Please help. Thank you in advance.

Geoff
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Norak
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    Why not? This is a very annoying thing to do to a user. – SLaks Apr 24 '13 at 15:46
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    @SLaks: It's not entirely unreasonable; ever try to open a second instance of Skype? Personally there are some cases where it would be _more_ annoying to get a new instance rather than be dropped into an existing one. – Geoff Apr 24 '13 at 16:11

2 Answers2

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Use the “Make single instance application” flag; in the solution explorer, right-click the project and select properties. See this question for more details.

MSDN documentation here.

Screenshot:

enter image description here

Community
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Geoff
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  • can u imagine that I'm using a code to check if the process is running to allow only one instance of my application :( just found this solution now, thanks, I feel stupid :) – Osama Gadour May 21 '22 at 20:04
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Use the “Make single instance application” flag; in the solution explorer

Amr Moussa
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