如何在WPF列表框中获取选中的项目? [英] How to get checked items in a WPF ListBox?

问题描述

我有一个WPF ListBox，其中有多个复选框，但是以什么方式获取已检查的项目列表呢?

I have a WPF ListBox where I have checkboxes, but what's the way to get the list of items that are checked?

列表框是绑定到 Dictionary< T> 的数据.

The ListBox is data binded to a Dictionary<T>.

这是XAML:

<Window x:Class="WpfApplication.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window1"
        Height="300"
        Width="300">
    <Grid Margin="10">
        <ListBox ItemsSource="{DynamicResource Nodes}" Grid.IsSharedSizeScope="True" x:Name="MyList">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Grid>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition SharedSizeGroup="Key" />
                            <ColumnDefinition SharedSizeGroup="Name" />
                            <ColumnDefinition SharedSizeGroup="Id" />
                        </Grid.ColumnDefinitions>
                        <CheckBox Name="NodeItem" Click="OnItemChecked">
                            <StackPanel Orientation="Horizontal">
                                <TextBlock Margin="2" Text="{Binding Value.Name}" Grid.Column="1"/>
                                <TextBlock Margin="2" Text="-" Grid.Column="2"/>
                                <TextBlock Margin="2" Text="{Binding Value.Id}" Grid.Column="3"/>
                            </StackPanel>
                        </CheckBox>
                    </Grid>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </Grid>
</Window>

推荐答案

乔什·史密斯(Josh Smith)具有文章，该文章应说明您的需求.他正在讨论 TreeView ，但是该原理也将移植到 CheckBox .

Josh Smith has an article on codeproject that should explain what you need. He is discussing a TreeView but the principle will port over to the CheckBox as well.

此处使用 DataTemplate 并将 CheckBox.IsChecked 属性绑定到 ListBoxItem.IsSelected 属性.

There is also a very interesting approach here using a DataTemplate and Binding the CheckBox.IsChecked property to the ListBoxItem.IsSelected property.

如果您不熟悉MVVM， Jason Dolinger 上有一个很好的视频.它逐步引导您完成从使用文件后面的代码到完整的MVVM模式(包括依赖注入和测试)的过程.

If you are new to MVVM, Jason Dolinger has an excellent video on the subject. It steps you through the process moving from using code behind files to a full MVVM pattern including Dependency Injection and Testing.

这篇关于如何在WPF列表框中获取选中的项目?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！