C# – How to add scrollbars to your custom control in WPF

cnetscrollbarswpf

After asking this question I realized that perhaps I should have asked a more generic question. So, here goes:

In WPF, I'm creating a custom Panel-derived control. To that control I would like to add horizontal and vertical scrollbars and control them myself (get & set min/max/value/pagesize). How can I do this?

This is my first encounter with WPF, and I'm not yet familiar with Templates and Styles, so I don't know if answer lies there or somewhere else.

Best Answer

OK, I found it! Three easy steps:

Implement System.Windows.Controls.Primitives.IScrollInfo on your custom control;
Add your custom control to a ScrollViewer;
Set the CanContentScroll property on the ScrollViewer to True.

Voila!

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.net – How to use WPF bindings with RelativeSource

If you want to bind to another property on the object:

{Binding Path=PathToProperty, RelativeSource={RelativeSource Self}}

If you want to get a property on an ancestor:

{Binding Path=PathToProperty,
    RelativeSource={RelativeSource AncestorType={x:Type typeOfAncestor}}}

If you want to get a property on the templated parent (so you can do 2 way bindings in a ControlTemplate)

{Binding Path=PathToProperty, RelativeSource={RelativeSource TemplatedParent}}

or, shorter (this only works for OneWay bindings):

{TemplateBinding Path=PathToProperty}

C# – WPF User Control Parent

Try using the following:

Window parentWindow = Window.GetWindow(userControlReference);

The GetWindow method will walk the VisualTree for you and locate the window that is hosting your control.

You should run this code after the control has loaded (and not in the Window constructor) to prevent the GetWindow method from returning null. E.g. wire up an event:

this.Loaded += new RoutedEventHandler(UserControl_Loaded);

Best Answer

Related Solutions

.net – How to use WPF bindings with RelativeSource

C# – WPF User Control Parent

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