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Home/ Questions/Q 9235283
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Editorial Team
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Editorial Team
Asked: June 18, 20262026-06-18T06:59:28+00:00 2026-06-18T06:59:28+00:00

I am trying to code for pop up message box for displaying message for

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I am trying to code for pop up message box for displaying message for successful record insertion in C#.net

Error :

The type or namespace name ‘Windows’ does not exist in the namespace
‘System’ (are you missing an assembly reference?)

Code :

 global::System.Windows.Forms.MessageBox.Show("Test");
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  1. Editorial Team
    Editorial Team
    2026-06-18T06:59:29+00:00Added an answer on June 18, 2026 at 6:59 am

    You are not missing any DLL , It seems like you are using the wrong type of project.

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