WPF: How to set bool to true from DataTemplate for Button? - wpf

Question

I know it is possible to do this by working with ICommand, but since this is the only place in my whole project where this is needed, I am asking myself, if there is maybe a better solution than implementing RelayCommand and ICommand and an additional method in my otherwise property-only class?
Maybe my scenario may help here:
I have a ListView which is bound to a list of properties (this is a custom-class I made to display those).
I have a button in eacht row of entries, that I want to set the "IsToDelete"-Property to true.
If "IsToDelete" is true, all the controls I show in my ListView will collapse.
The whole logic is up to this point in DataTemplates, the one for my button looks like this:
<DataTemplate x:Key="DeleteButtonTemplate">
<Button Name="bt_Delete"
Command="{Binding RelativeSource={RelativeSource AncestorType=ListView}, Path=ItemSource.DeleteClicked}">
<Image Height="16" Width="16" Source="Images\RecycleBin\VSO_RecycleBin_16x.png"/>
<Button.Style>
<Style TargetType="{x:Type Button}">
<Style.Triggers>
<DataTrigger Binding="{Binding IsToDelete}" Value="True">
<Setter Property="Visibility" Value="Collapsed"/>
</DataTrigger>
</Style.Triggers>
</Style>
</Button.Style>
</Button>
</DataTemplate>
Note the command in this DataTemplate is currently not working as intended, that is why I even got to the question ;)
In the optimal case I'd just have to do something like:
<Setter Property="{Binding IsToDelete}" Value="True"/>
So, is there a way to solve it like this or at least in a less complicated way than ICommand with RelayCommand?

Answer 1

why not use ToggleButton and bind IsChecked property to IsToDelete property of a viewModel?
simplified example with ItemsControl
<ItemsControl>
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<ToggleButton Content="X" IsChecked="{Binding Path=IsToDelete}"/>
<Border Width="100"
Background="MediumPurple"
Margin="5">
<Border.Style>
<Style TargetType="Border">
<Setter Property="Visibility" Value="Visible"/>
<Style.Triggers>
<DataTrigger Binding="{Binding Path=IsToDelete}" Value="True">
<Setter Property="Visibility" Value="Collapsed"/>
</DataTrigger>
</Style.Triggers>
</Style>
</Border.Style>
</Border>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>

Answer 2

You could use the Click eventhandler of the Button. Then you don't need any Commands.
private void bt_Delete_Click(object sender, RoutedEventArgs e)
{
var btn = sender as Button;
YourClass dc = btn.DataContext as YourClass;
dc.IsToDelete = true;
}
I don't really like this solution, but I think, it would work.