C# WPF ListBox Checkbox Binding IsChecked to a Field and IsSelected

ccheckboxlistboxwpf

I'm trying to bind a CheckBox to a field but also trigger the checkbox's IsSelected.

Here is the ListBox setup that is working with the Binding to data

<ListBox x:Name="lstExclude"  Grid.Column="2" SelectionMode="Single" >
  <ListBox.ItemTemplate>
    <DataTemplate>
      <CheckBox  Content="{Binding Text}" 
          IsChecked="{Binding Checked ,Mode=TwoWay}"/>
      </DataTemplate>
  </ListBox.ItemTemplate>
</ListBox>

And here is the code associated with the binding 

public MainWindow()
{
    InitializeComponent();

    List<CheckBoxListItem> items1 = new List<CheckBoxListItem>();
    items1.Add(new CheckBoxListItem(true, “home”));
    items1.Add(new CheckBoxListItem(false, “work”));
    items1.Add(new CheckBoxListItem(true, “cell”));
    lstExclude.ItemsSource = items1;
}

public class CheckBoxListItem
{
   public bool Checked { get; set; }
   public string Text { get; set; }

   public CheckBoxListItem(bool ch, string text)
   {
     Checked = ch;
     Text = text;
    }
}

This binds the checkbox checked value correctly, but if I click the checkbox (checked or unchecked), I want it to select the item, so I tried doing it this way

<ListBox x:Name="lstExclude"  Grid.Column="2" SelectionMode="Single" >
  <ListBox.ItemTemplate>
    <DataTemplate>
      <CheckBox  Content="{Binding Text}" 
          IsChecked="{Binding RelativeSource={RelativeSource AncestorType=ListBoxItem}, Path=IsSelected}"/>
      </DataTemplate>
  </ListBox.ItemTemplate>
</ListBox>

So this gives me the results of clicking the checkbox (check or uncheck) and it will select the item. The problem is now the Checked field is not bound when I add the items.

How can you get the checkbox to be both bound to the Checked field AND still have the IsSelected work?

Best Answer

Would it work to bind both UI properties to the Checked object model property?

<ListBox.ItemContainerStyle>
    <Style TargetType="{x:Type ListBoxItem}">
        <Setter Property="IsSelected" Value="{Binding Checked, Mode=OneWay}"/>
    </Style>
</ListBox.ItemContainerStyle>

<ListBox.ItemTemplate>
   <DataTemplate>
      <CheckBox Content="{Binding Text}" IsChecked="{Binding Checked}"/>
   </DataTemplate>
</ListBox.ItemTemplate>
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