Hello!
Recently, I update Avalonia on my project to nightly build (now preview build Avalonia 0.9.0-preview3) and some problems has appeared. For example, _commas_ doesn't work anymore at selectors in styles.
But main problem in Resource.
Before update, I used to store some ControleTemplates in UserControl.Resources:
<ControlTemplate x:Key="VisualBlockTemplateParent" TargetType="ListBoxItem">
Now, when I try to build project, I get an error:

How can i solve this problem?
@MiKaMaru can you please post the Xaml where you declare you ControlTemplates?
@danwalmsley, sure.
Prepare yourself: bad code ahead
`
xmlns="https://github.com/avaloniaui"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Style Selector="ListBoxItem:selected /template/ ContentPresenter">
<Setter Property="Background" Value="{DynamicResource ListBoxBrush}" />
</Style>
<Style Selector="ListBoxItem:selected:focus /template/ ContentPresenter">
<Setter Property="Background" Value="{DynamicResource ListBoxBrush}" />
</Style>
<Style Selector="ListBoxItem:selected:pointerover /template/ ContentPresenter">
<Setter Property="Background" Value="{DynamicResource ListBoxBrush}" />
</Style>
<Style Selector="ListBoxItem:selected:focus:pointerover /template/ ContentPresenter">
<Setter Property="Background" Value="{DynamicResource ListBoxBrush}" />
</Style>
<Style Selector="TextBlock.OrderText">
<Setter Property="FontSize" Value="12" />
<Setter Property="FontWeight" Value="500" />
<Setter Property="Margin" Value="0 5 0 0" />
</Style>
</UserControl.Styles>
<UserControl.Resources>
<ControlTemplate x:Key="VisualBlockTemplateParent" TargetType="ListBoxItem">
<Grid
Margin="0,5,0,0"
Focusable="False"
RowDefinitions="Auto,*">
<StackPanel Grid.Row="0">
<Rectangle Classes="dividingStripGroupEditor" IsVisible="{Binding $parent[UserControl].IsVisibleDividingStrip}" />
<StackPanel Focusable="False" Orientation="Horizontal">
<TextBlock
Margin="30,5,0,0"
Classes="OrderText"
FontWeight="Bold"
Text="Запись № " />
<TextBlock
Classes="OrderText"
FontWeight="Bold"
Text="{Binding Tag, RelativeSource={RelativeSource TemplatedParent}}" />
<TextBlock
Classes="OrderText"
FontWeight="Bold"
Text="." />
</StackPanel>
</StackPanel>
<Grid Grid.Row="1">
<ContentPresenter
Grid.Column="0"
Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}" />
</Grid>
</Grid>
</ControlTemplate>
<ControlTemplate x:Key="VisualBlockTemplateWithoutDelButton" TargetType="ListBoxItem">
<Grid Focusable="False" RowDefinitions="Auto,*">
<StackPanel
Grid.Row="0"
Focusable="False"
Orientation="Horizontal">
<TextBlock
Margin="30,5,0,0"
Classes="OrderText"
FontWeight="Bold"
Text="Запись № " />
<TextBlock
Classes="OrderText"
FontWeight="Bold"
Text="{Binding Tag, RelativeSource={RelativeSource TemplatedParent}}" />
<TextBlock
Classes="OrderText"
FontWeight="Bold"
Text="." />
</StackPanel>
<Grid Grid.Row="1">
<ContentPresenter
Grid.Column="0"
Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}" />
</Grid>
</Grid>
</ControlTemplate>
</UserControl.Resources>
<Grid HorizontalAlignment="Left" RowDefinitions="*,Auto">
<ListBox
Name="ListBox1"
Grid.Row="0"
Margin="-4,0,0,0"
Background="{DynamicResource ListBoxBrush}"
BorderThickness="0"
VirtualizationMode="None" />
<StackPanel
Grid.Row="1"
Margin="0,0,0,5"
Orientation="Vertical">
<Button
Name="AddReq"
Width="80"
Height="25"
Margin="30,0,0,0"
HorizontalAlignment="Left">
Добавить
</Button>
<Rectangle Name="DividingStripRectangle" Classes="dividingStripGroupEditor" />
</StackPanel>
</Grid>
`
We have some logic with
public ControlTemplate VisualBlockTemplateParent => (ControlTemplate)this.FindResource(nameof(VisualBlockTemplateParent));
on back-side. that's why I need it.
Even if I try to do smth like this in empty Avalonia Project on 0.9.0-preview3 - I can not build it.
x:Key in ControlTemplate - hasn't setter for this anymore
Did this resolution make it into build 0.9.1? I just upgraded to the "latest" version and I am getting this same error.
<PackageReference Include="Avalonia" Version="0.9.1" />
<PackageReference Include="Avalonia.Desktop" Version="0.9.1" />
<PackageReference Include="Avalonia.ReactiveUI" Version="0.9.1" />
<PackageReference Include="MessageBox.Avalonia" Version="0.9.0" />
Most helpful comment
Did this resolution make it into build 0.9.1? I just upgraded to the "latest" version and I am getting this same error.