entrance-testing/EntranseTesting/Views/EditorViews/EditorMatches.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.EditorMatches"
             x:DataType="vm:MainWindowViewModel"
             xmlns:vm="using:EntranseTesting.ViewModels">
  <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Disabled">
    <StackPanel Orientation="Vertical" Spacing="10">
      <StackPanel Orientation="Vertical" Spacing="5">
        <TextBlock Text="Вид соотношения" VerticalAlignment="Center"/>
        <ComboBox Width="450"
                  IsEnabled="{Binding EditorPages.TaskEditorPage.EditingCategory}"
                  ItemsSource="{Binding EditorPages.TaskEditorPage.MatchCategory}"
                  SelectedItem="{Binding EditorPages.TaskEditorPage.SelectedMatchCategory}"/>
      </StackPanel>
      <Grid>
        <Grid.ColumnDefinitions>
          <ColumnDefinition Width="50" SharedSizeGroup="A"/>
          <ColumnDefinition Width="350" SharedSizeGroup="B"/>
          <ColumnDefinition Width="20"/>
          <ColumnDefinition Width="350" SharedSizeGroup="C"/>
        </Grid.ColumnDefinitions>

        <Grid.RowDefinitions>
          <RowDefinition Height="Auto"/>
          <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>

        <StackPanel Orientation="Vertical" Spacing="5" Grid.Column="1"
                    IsVisible="{Binding EditorPages.TaskEditorPage.SelectedGroup}">
          <TextBlock Text="Группа 1" VerticalAlignment="Center"
                     HorizontalAlignment="Center" Width="350"/>
          <TextBox Width="350"                   
                   Text="{Binding EditorPages.TaskEditorPage.MatchesGroup1.Name}"/>
        </StackPanel>
        <StackPanel Orientation="Vertical" Spacing="5" Grid.Column="3"
                    IsVisible="{Binding EditorPages.TaskEditorPage.SelectedGroup}">
          <TextBlock Text="Группа 2" VerticalAlignment="Center"
                     HorizontalAlignment="Center" Width="350"/>
          <TextBox Width="350"                  
                   Text="{Binding EditorPages.TaskEditorPage.MatchesGroup2.Name}"/>
        </StackPanel>

        <TextBlock Text="Элементы" VerticalAlignment="Center"
                   HorizontalAlignment="Center" 
                   Grid.Row="1" Grid.ColumnSpan="4"
                   Margin="0 5"/>
      </Grid>
      
      <ItemsRepeater ItemsSource="{Binding EditorPages.TaskEditorPage.MatchesElement}"
                                 HorizontalAlignment="Stretch"
                                 VerticalAlignment="Stretch">
        <ItemsRepeater.Layout>
          <StackLayout Spacing="5" Orientation="Vertical"/>
        </ItemsRepeater.Layout>
        <ItemsRepeater.ItemTemplate>
          <DataTemplate>
            <Grid>
              <Grid.ColumnDefinitions>
                <ColumnDefinition Width="50" SharedSizeGroup="A"/>
                <ColumnDefinition Width="350" SharedSizeGroup="B"/>
                <ColumnDefinition Width="20"/>
                <ColumnDefinition Width="350" SharedSizeGroup="C"/>
              </Grid.ColumnDefinitions>

              <Button Content="х" Grid.Column="0"
                      Command="{Binding  $parent[Window].((vm:MainWindowViewModel)DataContext).EditorPages.TaskEditorPage.DeleteItem}"
                      CommandParameter="{Binding}"
                      IsVisible="{Binding $parent[Window].((vm:MainWindowViewModel)DataContext).EditorPages.TaskEditorPage.NoEditing}"
                      VerticalAlignment="Center" HorizontalAlignment="Center"/>

              <StackPanel Orientation="Vertical" Spacing="5" Grid.Column="1">
                <TextBox Width="350" Height="80"
                         Text="{Binding Name1}"/>
              </StackPanel>
              <StackPanel Orientation="Vertical" Spacing="5" Grid.Column="3">
                <TextBox Width="350" Height="80"
                         Text="{Binding Name2}"/>
              </StackPanel>
            </Grid>
          </DataTemplate>
        </ItemsRepeater.ItemTemplate>
      </ItemsRepeater>

      <Button Content="Добавить пару"
              IsVisible="{Binding EditorPages.TaskEditorPage.NoEditing}"
              Command="{Binding  $parent[Window].((vm:MainWindowViewModel)DataContext).EditorPages.TaskEditorPage.AddItem}"
              HorizontalAlignment="Center"/>
    </StackPanel>
  </ScrollViewer>

</UserControl>