WPF - DataGridCheckBoxColumn: How to give ElementName to DataGridCell and CheckBox therein?

Question

WPF - DataGridCheckBoxColumn: How to give ElementName to DataGridCell and CheckBox therein?

Answer 1

Here is an example of binding ElementName in CheckBox, you could try it for reference.
MainWindow.xaml:

<Window.Resources>  
        <Style x:Key="cell" TargetType="DataGridCell">  
            <Setter Property="Background" Value="LightBlue"/>  
        </Style>  
    </Window.Resources>  
    <StackPanel>  
        <TextBlock Name="tb" Text="hello" Width="150" Background="LightSteelBlue"/>  
        <DataGrid Name="dg" ItemsSource="{Binding Persons}" AutoGenerateColumns="False"  CellStyle="{StaticResource cell}">  
            <DataGrid.Resources>  
                <Style x:Key="BackgroundColourStyle" TargetType="{x:Type CheckBox}">  
                    <Style.Triggers>  
                        <Trigger Property="IsChecked" Value="True">  
                            <Setter Property="Background" Value="LightGreen" />  
                        </Trigger>  
                    </Style.Triggers>  
                </Style>  
            </DataGrid.Resources>  
            <DataGrid.Columns>  
                <DataGridTextColumn Header="ID" Binding="{Binding ID}"  />  
                <DataGridTextColumn x:Name="Name1" Header="Name" Binding="{Binding Name}"/>  
                <DataGridCheckBoxColumn x:Name="check" Header="{Binding ElementName=Name1,Path= Header}"  Binding="{Binding Check}"  ElementStyle="{StaticResource BackgroundColourStyle }"/>  
                <DataGridTemplateColumn x:Name="Check" >  
                    <DataGridTemplateColumn.Header >  
                        <CheckBox Content="SelectAll" x:Name="headerCheckBox"  Background="{Binding ElementName=tb,Path=Background}" Width="{Binding ElementName=tb ,Path=Width}"/>  
                    </DataGridTemplateColumn.Header>  
                    <DataGridTemplateColumn.CellTemplate >  
                        <DataTemplate>  
                            <CheckBox x:Name="CheckSelected" Background="Orange" IsChecked="{Binding IsChecked,ElementName=headerCheckBox,Mode=OneWay}"/>  
                        </DataTemplate>  
                    </DataGridTemplateColumn.CellTemplate>  
                </DataGridTemplateColumn>  
            </DataGrid.Columns>  
        </DataGrid>  
    </StackPanel>  

MainWindow.xaml.cs:

    public partial class MainWindow : Window  
  {  
    public ViewMode viewmodel;  
    public MainWindow()  
    {  
      InitializeComponent();  
      viewmodel = new ViewMode();  
  
      this.DataContext = viewmodel;  
    }  
  
  }  
  public class ViewMode : INotifyPropertyChanged  
  {  
    public ObservableCollection<Person> Persons { get; set; }  
    public ViewMode()  
    {  
      Persons = new ObservableCollection<Person>();  
      Persons.Add(new Person { ID = 1, Name = "man", Check=true});  
      Persons.Add(new Person { ID = 2, Name = "john", Check = true});  
      Persons.Add(new Person { ID = 3, Name = "jo" , Check = false });  
    }  
     
    protected void OnPropertyChanged(string porpName)  
    {  
      var temp = PropertyChanged;  
      if (temp != null)  
        temp(this, new PropertyChangedEventArgs(porpName));  
    }  
    public event PropertyChangedEventHandler PropertyChanged;  
  }  
  public class Person  
  {  
    public int ID { get; set; }  
    public String Name { get; set; }  
    public bool Check { get; set; }  
  }  

The result:

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