Custom Tab Control Switching tabs - Visual Basic 2010 Tutorial

Hi,
this is a tutorial showing you how to switch tabs onclick from a button.

[electraplays]

the tab label and nothing found and error comes

[sergiosmfyo]

Hi, I've got a question. Why doesn't this work when the tabpage is in a third form. When writing the code the property "selectedTab" doesn't show up, neither can it be compiled :/ Should I add something else?
Apparently, it only works this way when the tab control is in the first form.

[rogeriosatil]

Vc saberia me dizer o código para o visual studio 2019?

[electraplays]

uhh what hell your making
how you connect the tab ?

[stormybear]

No audio narration or explamnation. Who knows what he's even doing? Don't waste your time.