CtrEditor/PopUps/AssignImagesWindow.xaml

<Window x:Class="CtrEditor.PopUps.AssignImagesWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        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"
        xmlns:i="http://schemas.microsoft.com/xaml/behaviors"
        xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit" xmlns:local="clr-namespace:CtrEditor.PopUps"
        xmlns:viewModels="clr-namespace:CtrEditor.PopUps" xmlns:i1="http://schemas.microsoft.com/xaml/behaviors"
        mc:Ignorable="d" Title="Assign Pages to MultiPage Object"
        Height="450" Width="800">

    <Window.DataContext>
        <viewModels:AssignImagesViewModel />
    </Window.DataContext>

    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>

        <ToolBarTray Grid.Column="0" Grid.Row="0">
            <ToolBar>
                <Button Command="{Binding TBSelectAllCommand}" ToolTip="Select All">
                    <StackPanel>
                        <Image Source="/Icons/allselect.png" Width="16" Height="16" />
                        <TextBlock Text="Select All Objects" />
                    </StackPanel>
                </Button>
                <Button Command="{Binding TBUnSelectAllCommand}" ToolTip="Unselect All">
                    <StackPanel>
                        <Image Source="/Icons/unselect.png" Width="16" Height="16" />
                        <TextBlock Text="Unselect All Objects" />
                    </StackPanel>
                </Button>
            </ToolBar>
        </ToolBarTray>
        <ToolBarTray Grid.Column="1" Grid.Row="0">
            <ToolBar>
                <Button Command="{Binding TBSelectAllIamgesCommand}" ToolTip="Select All Images">
                    <StackPanel>
                        <Image Source="/Icons/allselect.png" Width="16" Height="16" />
                        <TextBlock Text="Select All Images" />
                    </StackPanel>
                </Button>
                <Button Command="{Binding TBUnSelectAllImagesCommand}" ToolTip="Unselect All">
                    <StackPanel>
                        <Image Source="/Icons/unselect.png" Width="16" Height="16" />
                        <TextBlock Text="Unselect all Images" />
                    </StackPanel>
                </Button>
            </ToolBar>
        </ToolBarTray>

        <!-- Lista de Objetos -->
        <xctk:CheckListBox Grid.Row="1" Grid.Column="0" ItemsSource="{Binding ObjetosSimulables}" DisplayMemberPath="Nombre"
                SelectedItemsOverride="{Binding SelectedObjetosSimulables, Mode=TwoWay}" />

        <!-- Lista de Imágenes con CheckListBox -->
        <xctk:CheckListBox Grid.Row="1" Grid.Column="1" ItemsSource="{Binding ListaImagenes}" DisplayMemberPath="."
                SelectedItemsOverride="{Binding SelectedImagenes, Mode=TwoWay}" />

        <!-- Botón para guardar cambios -->
        <Button Grid.Row="2" Grid.ColumnSpan="2" Content="Save" Command="{Binding AssignImagesCommand}"
                Margin="10,10,10,10" />
        <TextBlock Grid.Row="3" Grid.ColumnSpan="2" Text="{Binding SelectedObjetosSimulables.Count}"  />

    </Grid>
</Window>