WPF

Question

<ControlTemplate TargetType="{x:Type TreeViewItem}">
    <Grid>
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="CommonStates">
            …
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
        …
    </Grid>
</ControlTemplate>

先前XAML控件模板的替代方案是代码隐藏C#.[=16中的以下示例=]

var rootGrid        = new FrameworkElementFactory(typeof(Grid));
var controlTemplate = new ControlTemplate(typeof(TreeViewItem))
{
    VisualTree = rootGrid
};

如何在代码隐藏版本中附加VisualStateGroup？我假设我需要瞄准 FrameworkElementFactory。方法 FrameworkElementFactory.AppendChild() 需要另一个 FrameworkElementFactory.

Answer 1

FrameworkElementFactory 是根据 Microsoft docs.

创建控件模板的已弃用方法

This class is a deprecated way to programmatically create templates, which are subclasses of FrameworkTemplate such as ControlTemplate or DataTemplate; not all of the template functionality is available when you create a template using this class. The recommended way to programmatically create a template is to load XAML from a string or a memory stream using the Load method of the XamlReader class.

您可以在代码中将模板构建为字符串，然后使用 XamlReader 的 Load 方法。这将使 VisualStateGroups 的实现变得容易！

希望对您有所帮助。

WPF – 如何在代码隐藏中创建的控件模板中附加 VisualStateGroups？

WPF – how to attach VisualStateGroups in control template created in code-behind?

c#

code-behind

controltemplate