我有一个由字符串和数组组成的对象。字符串填充ComboBox，数组填充ListView，这取决于所选的字符串值。ListView的每一行都由TextBlock和CheckBox组成。
在提交时，我希望能够验证哪些项已被选中进行进一步处理，但在使用MVVM方法时会出现中断。我目前将提交Button的DataContext绑定到ListView，但在提交时只返回第一个值（我需要将选定的值保存到一个列表中，我假设是这样，但我不确定保存在哪里）。我向模型添加了一个IsSelected属性，我认为这是第一步，但之后我一直在抓救命稻草。
型号

namespace DataBinding_WPF.Model
{
    public class ExampleModel { }

    public class Example : INotifyPropertyChanged
    {
        private string _name;
        private string[] _ids;
        private bool _isSelected;

        public bool IsSelected
        {
            get => _isSelected;
            set
            {
                if (_isSelected != value)
                {
                    _isSelected = value;
                    RaisePropertyChanged("IsSelected");
                }
            }
        }

        public string Name
        {
            get => _name;
            set
            {
                if (_name != value)
                {
                    _name = value;
                    RaisePropertyChanged("Name");
                }
            }
        }

        public string[] IDs
        {
            get => _ids;
            set
            {
                if (_ids != value)
                {
                    _ids = value;
                    RaisePropertyChanged("IDs");
                }
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        private void RaisePropertyChanged(string property)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new 
                    PropertyChangedEventArgs(property));
            }
        }
    }
}

检视模型

namespace DataBinding_WPF.ViewModel
{
    public class ExampleViewModel : INotifyPropertyChanged
    {
        public ObservableCollection<Example> Examples
        {
            get;
            set;
        }

        // SelectedItem in the ComboBox
        // SelectedItem.Ids will be ItemsSource for the ListBox
        private Example _selectedItem;
        public Example SelectedItem
        {
            get => _selectedItem;
            set
            {
                _selectedItem = value;
                RaisePropertyChanged(nameof(SelectedItem));
            }
        }

        // SelectedId in ListView
        private string _selectedId;
        public string SelectedId
        {
            get => _selectedId;
            set
            {
                _selectedId = value;
                RaisePropertyChanged(nameof(SelectedId));
            }
        }

        private string _selectedCheckBox;
        public string IsSelected
        {
            get => _selectedCheckBox;
            set
            {
                _selectedCheckBox = value;
                RaisePropertyChanged(nameof(IsSelected));
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        private void RaisePropertyChanged(string property)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new
                    PropertyChangedEventArgs(property));
            }
        }

        public void LoadExample()  
        {
            ObservableCollection<Example> examples = new ObservableCollection<Example>();
            examples.Add(new Example { Name = "Mark", IDs = new string[] { "123", "456" }, IsSelected = false });
            examples.Add(new Example { Name = "Sally", IDs = new string[] { "789", "101112" }, IsSelected = false });
            Examples = examples;
        }

        /* BELOW IS A SNIPPET I ADDED FROM AN EXAMPLE I FOUND ONLINE BUT NOT SURE IF IT'S NEEDED */
        private ObservableCollection<Example> _bindCheckBox;
        public ObservableCollection<Example> BindingCheckBox
        {
            get => _bindCheckBox;
            set
            {
                _bindCheckBox = value;
                RaisePropertyChanged("BindingCheckBox");
            }
        }
    }
}

检视

<UserControl x:Class = "DataBinding_WPF.Views.StudentView" 
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml" 
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006" 
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008" 
   xmlns:local = "clr-namespace:DataBinding_WPF" 
   mc:Ignorable = "d" 
   d:DesignHeight = "300" d:DesignWidth = "300">

    <Grid>
        <StackPanel HorizontalAlignment = "Left" >

            <ComboBox HorizontalAlignment="Left"   
                  VerticalAlignment="Top"   
                  Width="120"   
                  ItemsSource="{Binding Path=Examples}"    
                  SelectedItem="{Binding SelectedItem}"  
                  DisplayMemberPath="Name"/>

            <ListView x:Name="myListView" 
                        ItemsSource="{Binding SelectedItem.IDs}"
                        DataContext="{Binding DataContext, ElementName=submit_btn}"
                        SelectedItem="{Binding SelectedId}" 
                        Height="200" Margin="10,50,0,0" 
                              Width="Auto"
                        VerticalAlignment="Top"
                        Background="AliceBlue">
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <StackPanel Orientation="Horizontal" >
                            <CheckBox 
                                    Name="myCheckBox"                            
                                    IsChecked="{Binding IsSelected,
                                        RelativeSource={RelativeSource AncestorType=ListViewItem}}"
                                        Margin="5, 0"/>
                            <TextBlock Text="{Binding}" FontWeight="Bold" />
                        </StackPanel>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>

            <Button HorizontalAlignment="Left" Height="20" Width="100"
                    Click="Submit" x:Name="submit_btn">Submit</Button>
        </StackPanel>
    </Grid>
</UserControl>

View.cs

namespace DataBinding_WPF.Views
{
    /// <summary>
    /// Interaction logic for StudentView.xaml
    /// </summary>
    public partial class StudentView : UserControl
    {
        public StudentView()
        {
            InitializeComponent();
        }

        private void Submit(object sender, EventArgs e)
        {
            var selectedItems = ((Button)sender).DataContext;

            // process each selected item
           // foreach (var selected in ....) { }
        }
    }
}