Wpf treeview template example code#
Wpf treeview template example windows#

Use a TemplateBinding to manage which element in the template is affected by this control setting. For example, each control has a BorderThickness property. TemplateBinding is useful for binding parts of the template to properties of the control. A TemplateBinding is an optimized form of a binding for template scenarios, analogous to a binding constructed with. You may have noticed that the template resource defined in the previous section uses the TemplateBinding Markup Extension. Instead of creating a new blank template, it's easier to edit a copy and change a few aspects of the visual presentation.įor an example, see Create a template for a control. Įditing a copy of a template is a great way to learn how templates work. This command generates a style that defines a template. For example, in the Visual Studio WPF designer, select a CheckBox control, and then right-click and select Edit template > Create a copy. However, since the template of a control is applied by setting the Control.Template property, you can use a style to define or set a template.ĭesigners generally allow you to create a copy of an existing template and modify it. This is because the control template rewrites the visual appearance of the entire control, while a style simply applies property changes to the existing control. As with all resources, scoping rules apply.Ĭontrol templates are a lot more involved than a style. Each template is designed for a specific control, such as a Button.Ĭommonly you declare a template as a resource on the Resources section of a XAML file. Because you define a template in XAML, you can change the control's appearance without writing any code.

The template connects the visual presentation of the control with the control's capabilities. In many cases, templates give you enough flexibility so that you do not have to write your own custom controls.Įach control has a default template assigned to the Control.Template property. You can change the structure and appearance of a control by defining a new ControlTemplate and assigning it to a control. In WPF, the ControlTemplate of a control defines the appearance of the control. įor more information, see Create a style for a control. Here is an example of the styles declared above being used.

Wpf treeview template example code#

For example, if you declare the style in the root element of your app definition XAML file, the style can be used anywhere in your app.įor example, the following XAML code declares two styles for a TextBlock, one automatically applied to all TextBlock elements, and another that must be explicitly referenced. Put simply, where you declare a style affects where the style can be applied. Because styles are resources, they obey the same scoping rules that apply to all resources. The most common way to declare a style is as a resource in the Resources section in a XAML file. You can use a style on any element that derives from FrameworkElement or FrameworkContentElement such as a Window or a Button. You can think of a Style as a convenient way to apply a set of property values to multiple elements. The sample has two TextBlock elements and a ListBox control that is bound to a list of images.įor the complete sample, see Introduction to Styling and Templating Sample. This simple photo sample uses styling and templating to create a visually compelling user experience. The sample code provided in this overview is based on a simple photo browsing application shown in the following illustration. For more information about resources, see Overview of XAML resources. It's important to understand resources, which are what enable styles and templates to be reused. For information about data binding, see Data Binding Overview. This overview focuses on the styling and templating aspects of the app and doesn't discuss any data-binding concepts. Designers can work on the appearance of an app by using only XAML at the same time that developers work on the programming logic by using C# or Visual Basic. WPF provides that model.Īnother feature of the WPF styling model is the separation of presentation and logic. When customizing the appearance of an app, you want a strong styling and templating model that enables maintenance and sharing of appearance within and among apps.

Wpf treeview template example windows#

Windows Presentation Foundation (WPF) styling and templating refer to a suite of features that let developers and designers create visually compelling effects and a consistent appearance for their product.