Issues related to scrolling in RadNavigationView

[Alakay]

This is a test program for RadNavigationView. I've added 20 RadPageViewPages inside the RadNavigationView, and each page contains a UserControl. After adding 20 pages, a vertical scrollbar appears in the pageList area. However, after switching between pages once, when I scroll within a UserControl using the mouse, the scrollbar in the pageList area also moves simultaneously, which affects my usage. Is there a way to solve this issue?

[Dinko | Tech Support Engineer]

Hello Alakay,

Thank you for reaching out to us.

The UserControl does not handle the mouse input, and they bubbles it to the parent, which is the RadNavigationView control. In a case, you will have a scrollable content in the UserControl, you can use our RadScrollablePanel set to Dock.Fill. The panel will handle the mouse wheel. This way, you can scroll the UserControl and the navigation elements separately. 

I have prepared a sample project to demonstrate this approach.

Regards,
Dinko | Tech Support Engineer
Progress Telerik

[Alakay]

Thank you very much! You've taught me some new knowledge points. I'm also very sorry that I didn't express my needs clearly. My main issue is that I have a RadPropertyGrid placed inside a UserControl, and it's set to ReadOnly = true. When I want to scroll through the information in the RadPropertyGrid, the PropertyGrid scrolls, but at the same time, the navigation elements also scroll. I don't want them to scroll simultaneously. I've noticed that the PropertyGrid in the .NET components doesn't behave like this.

[Dinko | Tech Support Engineer]

Thank you for elaborating on your scenario. The RadPropertyGrid has its own logic for handling the mouse wheel logic. What I can suggest here is to place first a RadPanel and add the RadPropertyGrid as a child. Both the panel and the control can have Dock property set to Fill. Then you can handle the MouseWheel event as it bubbles from the RadPropertyGrid. This way we can stop it before moving to the RadNavigationView:

public partial class UserControl3 : UserControl
{
    // RadPanel 
        // RadPropertyGrid
    public UserControl3()
    {
        InitializeComponent();
        this.radPropertyGrid1.SelectedObject = new RadButton();
        this.radPanel1.MouseWheel += RadPanel1_MouseWheel;
    }

    private void RadPanel1_MouseWheel(object sender, MouseEventArgs e)
    {
        ((HandledMouseEventArgs)e).Handled = true;
    }
}

[Alakay]

That's fantastic! It's precisely the effect I was hoping for! You not only helped me solve the problem but also made me understand the principle behind it.Thank you so, so, so much!