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Assalam 3alykom Abu Wael,

Do you mean that the Form does not appears and also it's code behind,

If so try first viewing the form from menu, to do this click "View"=>"Designer"

if this method didn't work for you then you have to check if the Form class does exit in your Solution Explorer, if it's not exit then check the References in your Solution Explorer, if you don't see the namespace refrence of the form "System.Windows.Forms", then you have to add the dll refrence by rightclick "Refrences" and choose "Add Refrence", the "Add Refrence" window will appear then scroll down till you see "System.Windows.Forms", double click on it and press the "OK" button on the add refrence window, that will add the form refrence to your project, and you should be able to view the designer form and it's code behind and don't forget to add a new form to your project.

Suppose your project already has the "System.Windows.Forms" refrence, if so, add a new class to your project, name it "MyForm", then under the class declaration, inherit the windows form, i.e

Public Class MyForm
    Inherits System.Windows.Forms.Form

End Class

This class now is your form

Now you'll have to replace " Windows Form Designer generated code ".

I hope this helps