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Home/ Questions/Q 7582343
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Editorial Team
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Editorial Team
Asked: May 30, 20262026-05-30T18:24:47+00:00 2026-05-30T18:24:47+00:00

I have a C# app that had the default namespace WindowsFormsApplication1 . I decided

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I have a C# app that had the default namespace WindowsFormsApplication1.

I decided that I would like to use a different namespace so I renamed WindowsFormsApplication1. Now when I compile I get the error:

Could not find ‘WindowsFormsApplication1.Program’ specified for Main
method.

To rename the namespace I highlighted the namespace in a file and hit F2.

How do I resolve this and change the actual namespace through out the project?

I am using Visual C# 2010 Express.

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  1. Editorial Team
    Editorial Team
    2026-05-30T18:24:48+00:00Added an answer on May 30, 2026 at 6:24 pm

    In project -> properties change “startup object” to the new namespace.

    Select Startup Object

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