User Controls not showing up in the toolbox

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暗喜
暗喜 2020-12-13 12:21

I have some UserControls that I created in ProjectA. I have ProjectB that has a windows form that I want to put the controls on. Both of these projects are in a single sol

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  •  生来不讨喜
    2020-12-13 12:45

    Here was my problem: I had added a new constructor for my control which accepted a few arguments, but I had not explicitly re-declared the empty constructor! The toolbox can only include controls which have empty constructors. In general, when you are designing a class in vb, it has an empty constructor defined implicitly (meaning you don't need to declare one). BUT, as soon as you start designing your own constructors, this empty constructor disappears, so you need to explicitly redefine it in your code! Anyways, I realize most experienced vb coder's already know all this, but hopefully this can help some newbies like myself :).

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