Hi,
I created a new form like usual , the only thing special is that this form contains a userControl, when I work with this form I have no problem in design and run mode but When I want to inherit this form I get this exception from the designer :
There is already a command handler for the menu command
'5efc7975-14bc-11cf-9b2b-00aa00573819 : 17'

Hi,

This error arises if a third-party designer adds to the command table a command that already has a handler. You can handle this issue following this thread.

Hoping that could help you.

Best regards,

Ling Wang

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Hi,

This error arises if a third-party designer adds to the command table a command that already has a handler. You can handle this issue following this thread.

Hoping that could help you.

Best regards,

Ling Wang

---

Please remember to click “Mark as Answer�on the post that helps you, and to click “Unmark as Answer�if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.