UWP NavigationView: How to resize the width?

Question

I want to resize the width of the NavigationView. Windows Mail provides this resizeable feature. I cannot find an option to enable it. Example GIF:

Resizing NavigationView

Answer 1

I don't think NavigationView provides this feature itself. Maybe you can try to adjust the width by OpenPaneLenght and use a bar like GridSplitter

https://learn.microsoft.com/en-us/windows/communitytoolkit/controls/gridsplitter https://learn.microsoft.com/en-us/uwp/api/windows.ui.xaml.controls.navigationview.openpanelength#Windows_UI_Xaml_Controls_NavigationView_OpenPaneLength