entrance-testing/EntranseTesting/Views/EditorViews/TaskMain.axaml

<UserControl 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" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="EntranseTesting.TaskMain"
             x:DataType="vm:MainWindowViewModel"
             xmlns:vm="using:EntranseTesting.ViewModels">
  <ScrollViewer HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto">
    <Grid Margin="15 10"
          RowDefinitions="Auto,*">
      <!-- Блок фильтрации, поиска, сортировки -->
      <WrapPanel Orientation="Horizontal">
        <!-- // Поиск //-->
        <StackPanel Orientation="Vertical" Margin="5">
          <TextBlock Text="Искать по вопросу"
                     VerticalAlignment="Center"/>
          <TextBox Text="{Binding EditorPages.TaskMainPage.SearchLine}"
                   TextBlock.TextWrapping="NoWrap"
                   Width="250"/>
        </StackPanel>
        <!-- // Фильтрация //-->
        <StackPanel Orientation="Vertical" Margin="5">
          <TextBlock Text="Фильтровать по типу задания"
                     VerticalAlignment="Center"/>
          <ComboBox ItemsSource="{Binding EditorPages.TaskMainPage.CategoryList}"
                    SelectedItem="{Binding EditorPages.TaskMainPage.SelectedCategory}"
                    Width="250" WrapSelection="False"
                    TextBlock.TextWrapping="NoWrap"/>
        </StackPanel>
        <!-- // Сортировка //-->
        <StackPanel Orientation="Vertical" Margin="5">
          <TextBlock Text="Сортировать"
                     VerticalAlignment="Center"/>
          <ComboBox ItemsSource="{Binding EditorPages.TaskMainPage.SortList}"
                    SelectedItem="{Binding EditorPages.TaskMainPage.SelectedSort}"
                    Width="250" WrapSelection="False"
                    TextBlock.TextWrapping="NoWrap"/>
        </StackPanel>
        <!-- // Те которые включаются в тест //-->
        <CheckBox Content="Вопросы, включаемые в тест"
                  VerticalAlignment="Bottom"
                  Width="300" Margin="5"
                  IsChecked="{Binding  EditorPages.TaskMainPage.SelectedInTest}"/>
        <!-- // Кнопка Добавления вопроса //-->
        <Button Command="{Binding AddQuestion}"
                VerticalAlignment="Bottom"  Margin="5"
                Content="Добавить вопрос"/>
      </WrapPanel>

      <!-- Вопросы -->
      <ItemsRepeater Grid.Row="1" ItemsSource="{Binding EditorPages.TaskMainPage.Questions}"
                     VerticalAlignment="Stretch" HorizontalAlignment="Stretch">
        <ItemsRepeater.Layout>
          <StackLayout Spacing="10" Orientation="Vertical"/>
        </ItemsRepeater.Layout>
        <ItemsRepeater.ItemTemplate>
          <DataTemplate>
            <Border BorderBrush="LightCoral" BorderThickness="0 0 0 2"
                    HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
                    Margin="10 2">
              <StackPanel Orientation="Vertical">
                <Grid ColumnDefinitions="*,*">
                  <!-- Кол-во раз в тесте -->
                  <ContentControl Content="{Binding AllCountInTest}"
                                  HorizontalAlignment="Stretch"
                                  VerticalAlignment="Top"/>
                  
                  <Button Grid.Column="1"
                          HorizontalAlignment="Right" Classes="icon"
                          Command="{Binding $parent[Window].((vm:MainWindowViewModel)DataContext).EditQuestion}" CommandParameter="{Binding Id}"
                          Tag="{StaticResource DraftsRegular}"
                          Content="Редактировать"/>
                </Grid>
                <!-- Задание -->
                <ContentControl Content="{Binding tName}"
                                HorizontalAlignment="Stretch"/>
                <!-- Ответ -->
                <ContentControl Content="{Binding Answer}"
                           HorizontalAlignment="Stretch"/>
                <!-- Количество + и - ответов -->
                <ContentControl Content="{Binding CountInTest}"
                           HorizontalAlignment="Stretch"/>
                
                <Button Content="Удалить вопрос" Margin="5"
                        Command="{Binding $parent[Window].((vm:MainWindowViewModel)DataContext).EditorPages.TaskMainPage.DeleteQuestion}" 
                        CommandParameter="{Binding Id}"
                        HorizontalAlignment="Right"
                        IsVisible="{Binding IsVisibleDelete}"/>
              </StackPanel>
            </Border>

          </DataTemplate>
        </ItemsRepeater.ItemTemplate>
      </ItemsRepeater>
    </Grid>
  </ScrollViewer>
</UserControl>