C# WPF TreeView-基于枚举值应用样式

我有一个

TreeView

绑定到包含

enum

值的

observeCollection

：

public enum Categories
{
    CatA, CatB, CatC, CatD
}

public ObservableCollection<Categories> CategoriesList = new ObservableCollection<Categories>();

foreach (Categories cat in (Categories[])Enum.GetValues(typeof(Categories)))
{
    CategoriesList.Add(cat);
}

XAML标记的名称：

<TreeView x:Name="tvCat">
    <TreeView.ItemContainerStyle>
        <Style TargetType="{x:Type TreeViewItem}">
            <Style.Triggers>
                 <Trigger Property="IsSelected" Value="True">
                     <Setter Property="FontWeight" Value="Bold"/>
                 </Trigger>
            </Style.Triggers>
        </Style>
    </TreeView.ItemContainerStyle>
</TreeView>

我正在试图找出如何为每个枚举值对

treevieItem

应用单独的样式设置，例如

CatA

的蓝色，CatB的红色，可能是

CatC

的图标等

---

非常感谢您的帮助。

您可以使用

DataTrigger

s获得所需的输出

<TreeView.ItemContainerStyle>
    <Style TargetType="{x:Type TreeViewItem}">
        <Style.Triggers>
            <Trigger Property="IsSelected" Value="True">
                <Setter Property="FontWeight" Value="Bold"/>
            </Trigger>
            <DataTrigger Binding="{Binding}" Value="CatA">
                <Setter Property="Foreground" Value="Blue" />
            </DataTrigger>
            <DataTrigger Binding="{Binding}" Value="CatB">
                <Setter Property="Foreground" Value="Red" />
            </DataTrigger>
        </Style.Triggers>
    </Style>
</TreeView.ItemContainerStyle>

---

请检查：您是否尝试使用DataTriggers？@Suresh我不确定如何使用

DataTriggers

将特定的

enum

值作为目标。大多数示例显示如何使用

类的
属性
。
<TreeView.ItemContainerStyle>
    <Style TargetType="{x:Type TreeViewItem}">
        <Style.Triggers>
            <Trigger Property="IsSelected" Value="True">
                <Setter Property="FontWeight" Value="Bold"/>
            </Trigger>
            <DataTrigger Binding="{Binding}" Value="CatA">
                <Setter Property="Foreground" Value="Blue" />
            </DataTrigger>
            <DataTrigger Binding="{Binding}" Value="CatB">
                <Setter Property="Foreground" Value="Red" />
            </DataTrigger>
        </Style.Triggers>
    </Style>
</TreeView.ItemContainerStyle>

<TreeView.Resources>
    <ControlTemplate TargetType="TreeViewItem" x:Key="CatCTemplate">
        <Image Source="icon.jpeg" Height="64" Width="64" />
    </ControlTemplate>
</TreeView.Resources>
<TreeView.ItemContainerStyle>
    <Style TargetType="{x:Type TreeViewItem}">
        <Style.Triggers>
            <Trigger Property="IsSelected" Value="True">
                <Setter Property="FontWeight" Value="Bold"/>
            </Trigger>
            <DataTrigger Binding="{Binding}" Value="CatA">
                <Setter Property="Foreground" Value="Blue" />
            </DataTrigger>
            <DataTrigger Binding="{Binding}" Value="CatB">
                <Setter Property="Foreground" Value="Red" />
            </DataTrigger>
            <DataTrigger Binding="{Binding}" Value="CatC">
                <Setter Property="Template" Value="{StaticResource CatCTemplate}" />
            </DataTrigger>
        </Style.Triggers>
    </Style>
</TreeView.ItemContainerStyle>