Duplicate declaration of member '<member name>'
This error arises because a member variable has been declared twice (for example, two Button1
s are declared within the code). Note, as well, that declarations must be unique across inherited forms, so that you are not allowed to have a form (for example, Form1
) with a member named Button1
declared within it and another form (Form2
) that derives from Form1
and also contains a member named Button1
. Finally, the names of the members must not be case-sensitive (for example, you may not have two members, okbutton
and OKButton
).
To correct this error
- Ensure all of your member variables are unique and conform to naming standards of the required language.