Resource error !Duplicate items are not supported by the "Resources" parameter.

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Hello everyone, i have an big problem... i am writing a project with multiple forms...
and i have a admin.cs with 2 childs : Admin.desighner.cs and admin.resx .. so, when i click in an button this form show up.. but when i click in another button i need to show same form but without some extras.. (i should not use visibile, or disable/enable class) , so i copy paste this windows form in same project but with other name, for example admin1.cs... when i compile it says :

error MSB3105: The item "......../.admin.resources" was specified more than once in the "Resources" parameter. Duplicate items are not supported by the "Resources" parameter.

please help me how can i solve this... bcos if i dont do i need to write so much codes.. just i need to make same form like "admin" but i will delete some functions.. thank you so much

Posted 25-Nov-13 12:25pm

Emin Kokalari

Updated 5-Aug-20 15:42pm

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Ron Beyer · Accepted Answer · 2013-11-25T12:27:00

Instead of copy/pasting the form in the solution explorer, the better thing to do is to create a new blank form and copy/paste all the controls from the first form to the new one.

This way it doesn't duplicate resources or try to use resources from a different file. You can also copy/paste the event handlers or any back-end code in the form directly, although you will have to re-wire the event handlers to the proper methods.

[Edit]

Although the above is a good way to duplicate a form, it still presents something you want to avoid as a programmer, code duplication. You should be using a single form and the enable/visible to change functionality. This reduces code complexity and duplication of work. You should review the reason you can't use that and try to find a reason to use the same form except just change things around to suit the new role.