So I have a form with lots of controls that all have a tab index.
After inserting some extra fields, I have to edit the index of all controls after the new ones.
Is there a simple way to automate this in Visual Studio, or is there some sort of plugin?
Assuming you are talking about a Windows Forms UI. You can click Menu: View | Tab Order, then just click through th controls that you want the tab order to be in. There doesn’t appear to be anything similar for web-based UI in Visual Studio.