Binding a DataTrigger to the IsChecked property of a checkbox - wpf

Question

I believe what I'm trying to do is "simple" enough, so I'm probably just missing something obvious.
In a DataGrid, I am trying to bind a CheckBox so that when it is checked, the Background color of its row will change. Every row has a CheckBox. I am basically implementing my own select-multiple-rows functionality (it's a product requirement, don't ask), and I have everything else working but this visual indication of a selected row.
I've read this question but where I lack my answer is what exactly to put as "BooleanPropertyOnObjectBoundToRow". I've also looked at this question and tried messing with a RelativeSource but with no luck.
I create my grid in my code-behind, but here is my current style used for rows (which has my DataTrigger defined):
<Style x:Key="MyRowStyle" TargetType="DataGridRow">
<Style.Triggers>
<DataTrigger Binding="{Binding IsChecked}" Value="True">
<Setter Property="Background" Value="Blue"/>
</DataTrigger>
</Style.Triggers>
</Style>
Now in my code-behind, I create my DataGridTemplateColumn and use a Factory to create my checkboxes, and here is my Binding-relevant code:
Binding checkBinding = new Binding("IsChecked");
checkBinding.Mode = BindingMode.OneWayToSource;
RelativeSource relativeSource = new RelativeSource();
relativeSource.AncestorType = typeof(DataGridRow);
relativeSource.Mode = RelativeSourceMode.FindAncestor;
checkBinding.RelativeSource = relativeSource;
factory.SetBinding(CheckBox.IsCheckedProperty, checkBinding);
What may be of interest is the fact that I set the ItemsSource of my DataGrid to a DataTable, but my CheckBox column does NOT have a corresponding column in the DataTable. I simply add the template column separately, maybe this lack of underlying storage is affecting this?
In any case if you need any more info, please let me know. Thanks!

Answer 1

Here's an example that works for me using C# classes, not a DataSet.
Xaml
<Page.Resources>
<Style x:Key="RowStyle" TargetType="{x:Type DataGridRow}">
<Style.Triggers>
<DataTrigger Binding="{Binding IsChecked, UpdateSourceTrigger=PropertyChanged}" Value="True">
<Setter Property="Background" Value="Blue"/>
</DataTrigger>
</Style.Triggers>
</Style>
</Page.Resources>
<Page.DataContext>
<Samples:DataGridRowHighlightViewModels/>
</Page.DataContext>
<Grid>
<DataGrid ItemsSource="{Binding Items}" RowStyle="{StaticResource RowStyle}" CanUserAddRows="False" AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridCheckBoxColumn Header="Selected" Binding="{Binding IsChecked}"/>
<DataGridTextColumn Header="Name" Binding="{Binding Name}"/>
</DataGrid.Columns>
</DataGrid>
</Grid>
C#
public class DataGridRowHighlightViewModels
{
public DataGridRowHighlightViewModels()
{
Items = new List<DataGridRowHighlightViewModel>
{
new DataGridRowHighlightViewModel {Name = "one"},
new DataGridRowHighlightViewModel {Name = "two"},
new DataGridRowHighlightViewModel {Name = "three"},
new DataGridRowHighlightViewModel {Name = "four"},
};
}
public IEnumerable<DataGridRowHighlightViewModel> Items { get; set; }
}
// ViewModelBase and Set() give INotifyPropertyChanged support (from MVVM Light)
public class DataGridRowHighlightViewModel : ViewModelBase
{
private bool _isChecked;
public bool IsChecked
{
get { return _isChecked; }
set { Set(()=>IsChecked, ref _isChecked, value); }
}
private string _name;
public string Name
{
get { return _name; }
set { Set(()=>Name, ref _name, value); }
}
}