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Please look for articles in this web site about tab controls. I assume your question is already answered very well in many articles, some of which are available in this web site.
After reading the articles and documentation, then ask specific questions. When you do, please use appropriate terminology. You say "add my form controls to my tab". A tab is actually a button; it is a relativly small area. I assume you did not actually put all the controls in a tab. When you have read the articles and documentation, you will be more able to use the appropriate terminology and then it will be easier for people to help you.
Update: I see your second post about "tabPage1"; thank you for that. I assume that the controls were put onto TabPage(s), and it helps to say TabPage instead of "tab".
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even when i delete my tab control and undo everything setting it back to it's original state, and create a small tab control next to my other form controls, i still can't seem to refer to my tabPage1.