Click event for DataGridCheckBoxColumn - wpf

Question

I have a DataGrid in a WPF form with a DataGridCheckBoxColumn, but I did not find any click event, Checked and unchecked for it...
Are these events available for the DataGridCheckBoxColumn? If not please suggest some workaround I could use.

Answer 1

Quoted from William Han's answer here: http://social.msdn.microsoft.com/Forums/ar/wpf/thread/9e3cb8bc-a860-44e7-b4da-5c8b8d40126d
It simply adds an event to the column. It is a good simple solution.
Perhaps you can use EventSetter as example below:
Markup:
<Window x:Class="DataGridCheckBoxColumnTest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:DataGridCheckBoxColumnTest"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<local:People x:Key="People"/>
</Window.Resources>
<Grid>
<DataGrid ItemsSource="{StaticResource People}" AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding Path=Name}" Header="Name"/>
<DataGridCheckBoxColumn Binding="{Binding Path=LikeCar}" Header="LikeCar">
<DataGridCheckBoxColumn.CellStyle>
<Style>
<EventSetter Event="CheckBox.Checked" Handler="OnChecked"/>
</Style>
</DataGridCheckBoxColumn.CellStyle>
</DataGridCheckBoxColumn>
</DataGrid.Columns>
</DataGrid>
</Grid>
</Window>
Code:
using System;
using System.Windows;
namespace DataGridCheckBoxColumnTest
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
void OnChecked(object sender, RoutedEventArgs e)
{
throw new NotImplementedException();
}
}
}
namespace DataGridCheckBoxColumnTest
{
public class Person
{
public Person(string name, bool likeCar)
{
Name = name;
LikeCar = likeCar;
}
public string Name { set; get; }
public bool LikeCar { set; get; }
}
}
using System.Collections.Generic;
namespace DataGridCheckBoxColumnTest
{
public class People : List<Person>
{
public People()
{
Add(new Person("Tom", false));
Add(new Person("Jen", false));
}
}
}

Answer 2

Expanding on the DataGridCell concept noted above, this is what we used to get it working.
...XAML...
<DataGrid Grid.ColumnSpan="2" Name="dgMissingNames" ItemsSource="{Binding Path=TheMissingChildren}" Style="{StaticResource NameListGrid}" SelectionChanged="DataGrid_SelectionChanged">
<DataGrid.Columns>
<DataGridTemplateColumn CellStyle="{StaticResource NameListCol}">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding Path=Checked, UpdateSourceTrigger=PropertyChanged}" Name="theCheckbox" />
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTextColumn Binding="{Binding Path=SKU}" Header="Album" />
<DataGridTextColumn Binding="{Binding Path=Name}" Header="Name" "/>
<DataGridTextColumn Binding="{Binding Path=Pronunciation}" Header="Pronunciation" />
</DataGrid.Columns>
</DataGrid>
TheMissingChildren is an ObservableCollection object that contains the list of data elements including a boolean field "Checked" that we use to populate the datagrid.
The SelectionChanged code here will set the checked boolean in the underlying TheMissingChildren object and fire off a refresh of the items list. That ensures that the box will get checked off & display the new state no matter where you click on the row. Clicking the checkbox or somewhere in the row will toggle the check on/off.
private void DataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
DataGrid ThisGrid = (DataGrid)sender;
CheckedMusicFile ThisMusicfile = (CheckedMusicFile)ThisGrid.SelectedItem;
ThisMusicfile.Checked = !ThisMusicfile.Checked;
ThisGrid.Items.Refresh();
}

Answer 3

<wpf:DataGridCheckBoxColumn Header="Cool?" Width="40" Binding="{Binding IsCool}"/>

Answer 4

How about something like this.
partial class SomeAwesomeCollectionItems : INotifyPropertyChanged
{
public event PropertyChanged;
protected void OnPropertyChanged(string property)
{
if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(property);
}
private bool _IsSelected;
public bool IsSelected { get { return _IsSelected; } set { _IsSelected = Value; OnPropertyChanged("IsSelected"); } }
}
Then in XAML
<DataGrid ItemsSource="{Binding Path=SomeAwesomeCollection"} SelectionMode="Single">
<DataGrid.Resources>
<Style TargetType="{x:Type DataGridRow}"
BasedOn="{StaticResource {x:Type DataGridRow}}">
<!--Note that you will probably need to base on other style if you have stylized your DataGridRow-->
<Setter Property="IsSelected" Value="{Binding Path=IsSelected, UpdateSourceTrigger=PropertyChanged}" />
</Style>
</DataGrid.Resources
<DataGrid.Columns>
<DataGridCheckBoxColumn Binding="{Binding Path=IsSelected, UpdateSourceTrigger=PropertyChanged}" />
<!--More Columns-->
</DataGrid.Columns>
</DataGrid>
One note with this approach, however, is you may run into issues with virtualization and checked items not clearing (not sure, haven't tested with SelectionMode="Single"). If that is the case, the simplest workaround I have found to work is to turn virtualization off, but perhaps there is a better way to get around that particular issue.

Answer 5

If you do not want to add the event to your style you can also do it this way.
<DataGridCheckBoxColumn x:Name="name" Header="name?" Binding="{Path=Name}"
<DataGridCheckBoxColumn.CellStyle>
<Style TargetType="DataGridCell" BasedOn="{StaticResource {x:Type DataGridCell}}">
<EventSetter Event="CheckBox.Checked" Handler="Checked"/>
</Style>
</DataGridCheckBoxColumn.CellStyle>
</DataGridCheckBoxColumn>eckBoxColumn.CellStyle>
</DataGridCheckBoxColumn>

Answer 6

Try this in xml
<DataGridCheckBoxColumn Header="" IsThreeState="False" Binding="{Binding isCheck, NotifyOnTargetUpdated=True, UpdateSourceTrigger=PropertyChanged}" />
And in c#
public partial class UploadWindow : Window
{
ObservableCollection<Items> pl = new ObservableCollection<Items>();
class Items
{
public bool isCheck { get; set; }
}
public UploadWindow(Dictionary<string, object> ipDictionary)
{
InitializeComponent();
GridView1.ItemsSource = pl;
}
}
In my case, I need to find all checked checkboxes
var allChecked = pl.Where(x => x.isCheck == true);