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Home/ Questions/Q 8220615
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Editorial Team
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Editorial Team
Asked: June 7, 20262026-06-07T13:35:14+00:00 2026-06-07T13:35:14+00:00

My app today started throwing the following error: The name ‘Control’ does not exist

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My app today started throwing the following error:

The name 'Control' does not exist in the current context

It’s happening only in 2 controls in the page, even if I rename them. If I add the control declaration myself in the .designer.cs file it works but when rebuilt it throws the error again.

Any ideas what might be wrong? I can paste all the code but I feel there’s just too much to paste, but if you want me to post some of the code just tell me.

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  1. Editorial Team
    Editorial Team
    2026-06-07T13:35:16+00:00Added an answer on June 7, 2026 at 1:35 pm

    The designer file for an aspx sometimes does no correctly write code for controls. so in such a case delete the designer file then right click on you .aspx file and Click “Convert to Web Application” this action regenerates the designer file again correctly

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