Does using too many UserControls have any disadvantages?

Question

Here I'm in a dilemma. I am developing a wpf window application with a lot of tabs. Each tab's content has some grids with a lot of controls. I am planning to replace the tab's content with UserControls. So I would have a lot of userControls, ie one userControl
per one tab. Plus, in my mainWindow, i could easily pass data from one tab to any class (for processing) by passing in the userControl/s that contains user inputs. In this way I am able to modularize the application and making it easier to handle.
I am wondering if there could be any downside to that that I am not aware of?
  

Answer 1

Since only the contents of the currently selected TabItem of a TabControl is actually added to the visual tree (and then removed when you select another tab), the UI performance won't suffer when you have a lot of tabs.
And "grouping" the controls under each tab into a UserControl seems like a good idea. Then you will also be able to reuse the contents of a TabPage somewhere else in your application if you want to - maybe not now but in the future. Anyway, I cannot
see any direct downside with putting the controls into a UserControl. After all, this is what a UserControl is for.
Please remember to close your threads by marking helpful posts as answer.