如何在 CustomControl 中“注入”不同的 ControlTemplate？

Question

我有一個 CustomControl 的 WPF 項目。 它有 a.cs 和一些依賴屬性：

namespace CustomControlLib
{     
    public class CustomControl1 : Control
    {
        static CustomControl1()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(CustomControl1), new FrameworkPropertyMetadata(typeof(CustomControl1)));
        }
        public Style IcStyle
        {
            get { return (Style)GetValue(IcStyleProperty); }
            set { SetValue(IcStyleProperty, value); }
        }
        public static readonly DependencyProperty IcStyleProperty =
            DependencyProperty.Register("IcStyle", typeof(Style), typeof(CustomControl1));
        .....
   

和 XAML 代碼用於其 Generic.xaml 中的兩個ControlTemplates：

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:ic="clr-namespace:CustomControlLib">
    
     <Style x:Key="ListBoxInputControl" TargetType="{x:Type ic:CustomControl1}"> 
         <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ic:CustomControl1}">
                        <Grid x:Name="ListRoot">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition  SharedSizeGroup="Labels"/>
                                <ColumnDefinition Width="320"/>
                            </Grid.ColumnDefinitions>

                            <Label
                                x:Name="PART_NameLabel2"
                                Grid.Column="0"
                                Margin="1">
                            <Label.Content>
                                ...
                            </Label.Content>
                            </Label>

                            <ListBox
                                Grid.Column="1"
                                ItemsSource="{TemplateBinding ...}"
                                SelectedIndex="{TemplateBinding ...}"
                                SelectedItem="{TemplateBinding ...}"/>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        
        <Style x:Key="ComboBoxInputControl" TargetType="{x:Type ic:CustomControl1}">
            <Setter Property="SnapsToDevicePixels" Value="true" />
            <Setter Property="OverridesDefaultStyle" Value="true" />

            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ic:CustomControl1}">
                        <Grid
                        x:Name="ComboRoot">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition SharedSizeGroup="Labels"/>
                                <ColumnDefinition Width="120"/>
                            </Grid.ColumnDefinitions>                      
                            
                            <Label
                                Grid.Column="0"                           
                                <Label.Content>
                                ...
                                </Label.Content>
                            </Label>
                            <ComboBox
                                x:Name="PART_ComboBox"
                                Grid.Column="1"
                                DisplayMemberPath="{TemplateBinding ...}"
                                ItemsSource="{TemplateBinding ...}"
                                SelectedItem="{TemplateBinding ...}">
                            </ComboBox>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
   

（還有第三個，用於文本框）
我想像這樣使用 CustomControl：

<Window
    x:Class="CoCa.Views.MainWindow"
    ...
    xmlns:ic="clr-namespace:CustomControlLib;assembly=CustomControlLib">
    ...
<ic:CustomControl1
   Name1="PLF"                             
   IcSelectedIndex="{Binding Path=.....}"       
   IcItemsSource="{Binding Source=...}"
   IcStyle="{StaticResource ic:ListBoxInputControl}"/>
<ic:CustomControl1
   Name1="PLF"                             
   IcSelectedIndex="{Binding Path=.....}"       
   IcItemsSource="{Binding Source=...}"
   IcStyle="{StaticResource ic:ComboBoxInputControl}"/>

我希望能夠像這樣在 CustomControl1 中插入正確的 ControlTemplate。 但是，唉：它不是這樣工作的。 我收到消息：“無法解析資源“ic:ComboBoxInputControl”。”

它是如何工作的？

Answer 1

嘗試使用其x:Key引用Style ：

IcStyle="{StaticResource ComboBoxInputControl}"/>

您還需要將定義 styles 的ResourceDictionary合並到 Window 的Window中，例如：

<Window.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="pack://application:,,,/CustomControlLib;component/themes/generic.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Window.Resources>