绑定集合WPF组合框和禁用某些项目 [英] Binding a collection to WPF ComboBox and disable some items

问题描述

 ＆LT; Window.Resources＆GT;
    ＆LT;的DataTemplate X：键=IpInfoTemplate＆GT;
        ＆LT;＆DockPanel中GT;
            ＆LT; TextBlock的文本={绑定路径= InterfaceName中}DockPanel.Dock =左保证金=0,0,10,0/＆GT;
            ＆LT; TextBlock的文本={绑定路径=地址}/＆GT;
        ＆LT; / DockPanel中＆GT;
    ＆LT; / DataTemplate中＆GT;
＆LT; /Window.Resources>＆LT;组合框的ItemTemplate ={StaticResource的IpInfoTemplate}
      的ItemsSource ={绑定源= {X：静态WpfApplication1：App.IpInfoList}，模式=单向}＆GT;
＆LT; /组合框＆GT;
 

这code已经绑定 App.IpInfoList 来组合框。

IpInfo 类有一个布尔属性已启用。要求是集 ComboBoxItem.IsEnabled = FALSE （使用户无法选择它），对应时 IpInfo.Enable ==虚假。

我希望所有code被写入在XAML。

解决方案

 ＆LT;组合框的ItemTemplate ={StaticResource的IpInfoTemplate}
          的ItemsSource ={绑定源= {X：静态WpfApplication1：App.IpInfoList}，模式=单向}＆GT;
    ＆LT; ComboBox.ItemContainerStyle＆GT;
        ＆LT;风格的TargetType ={X：类型ComboBoxItem}＆GT;
            ＆LT; setter属性=IsEnabledVALUE ={结合有效}/＆GT;
        ＆LT; /样式和GT;
    ＆LT; /ComboBox.ItemContainerStyle>
＆LT; /组合框＆GT;
 

它结合 ComboBoxItem.IsEnabled 属性为你的 IpInfo.Enabled 属性

<Window.Resources>
    <DataTemplate x:Key="IpInfoTemplate">
        <DockPanel>
            <TextBlock Text="{Binding Path=InterfaceName}" DockPanel.Dock="Left" Margin="0,0,10,0" />
            <TextBlock Text="{Binding Path=Address}"/>
        </DockPanel>
    </DataTemplate>
</Window.Resources>

<ComboBox ItemTemplate="{StaticResource IpInfoTemplate}"
      ItemsSource="{Binding Source={x:Static WpfApplication1:App.IpInfoList}, Mode=OneWay}">    
</ComboBox>

This code has binded App.IpInfoList to ComboBox.

IpInfo class has a bool property Enabled. The requirement is that set ComboBoxItem.IsEnabled=false (so that users can't select it) when corresponding IpInfo.Enable==false.

I hope all code is written in XAML.

解决方案

<ComboBox ItemTemplate="{StaticResource IpInfoTemplate}" 
          ItemsSource="{Binding Source={x:Static WpfApplication1:App.IpInfoList}, Mode=OneWay}">
    <ComboBox.ItemContainerStyle>
        <Style TargetType="{x:Type ComboBoxItem}">
            <Setter Property="IsEnabled" Value="{Binding Enabled}"/>
        </Style>
    </ComboBox.ItemContainerStyle>
</ComboBox>

It binds ComboBoxItem.IsEnabled property to your IpInfo.Enabled property

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