WPF

<ListBox Grid.Row="3"
            Grid.Column="0"
            ItemsSource="{Binding Devices}"
            SelectedItem="{Binding SelectedDevice}"
            MaxWidth="350">

    <ListBox.Resources>
        <Style TargetType="ListBoxItem">
            <Style.Resources>
                <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Transparent"/>
                <SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="Transparent"/>
                <SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}" Color="Black"/>
            </Style.Resources>
        </Style>
    </ListBox.Resources>

    <ListBox.ItemTemplate>
        <DataTemplate>

            <Border BorderBrush="SteelBlue"
                    BorderThickness="0"
                    HorizontalAlignment="Stretch"
                    CornerRadius="3"
                    MinHeight="65"
                    Margin="3">

                <Border.Style>
                    <Style>
                        <Style.Triggers>
                            <Trigger Property="Border.IsMouseOver" Value="True">
                                <Setter Property="Border.BorderThickness" Value="1" />
                            </Trigger>
                        </Style.Triggers>
                    </Style>
                </Border.Style>

                <Grid>

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

                    <Image Grid.Row="0" 
                            Grid.RowSpan="2"
                            Grid.Column="0"
                            Source="/DFT.Falcon6.UI.Desktop;component/Media/Images/fc6logo.png"
                            Height="50"
                            Width="50"
                            Margin="5"/>
                    <TextBlock Grid.Row="0"
                                Grid.Column="1"
                                Text="{Binding UnitIdentifier}"
                                Style="{StaticResource devicetextStyle}"
                                Margin="2"/>
                    <TextBlock Grid.Row="1"
                                Grid.Column="1"
                                Text="{Binding IPAddress}"
                                Style="{StaticResource devicetextStyle}"
                                Margin="2"/>

                </Grid>

            </Border>

        </DataTemplate>
    </ListBox.ItemTemplate>

</ListBox>

<Window x:Class="WpfTst1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="HTM Service Tool"  WindowState="Maximized" WindowStartupLocation="CenterScreen" 
        FontFamily="Global San Serif" FontSize="14" Icon="pack://application:,,,/Resource/Icon/Truck16X16.ico"
        >
<Window.Background>
        <ImageBrush ImageSource="pack://application:,,,/Resource/Image/H1.jpg"></ImageBrush>
    </Window.Background>
<Grid >
        <Menu Height="24" IsMainMenu="True" VerticalAlignment="Top" HorizontalAlignment="Left" >
            <MenuItem x:Name="FileMnu" Header="_File" HorizontalAlignment="Left" >
                <MenuItem Header="_Login" ></MenuItem>
                <MenuItem Header="_Exit" > </MenuItem>
            </MenuItem>

       </Menu>
    </Grid>
</Window>

{ Name = "R1", Id = 1, ParentId = 0 },
{ Name = "R2", Id = 2, ParentId = 0 },
{ Name = "R3", Id = 3, ParentId = 0 },
{ Name = "D1R1", Id = 4, ParentId = 1 },
{ Name = "D2R2", Id = 5, ParentId = 2 },
{ Name = "D3R3", Id = 6, ParentId = 3 },
{ Name = "T1D2R2", Id = 7, ParentId = 5 },
{ Name = "T2D2R2", Id = 8, ParentId = 5 },
{ Name = "T3D1R1", Id = 9, ParentId = 4 },
{ Name = "T4D3R3", Id = 10, ParentId = 6 },
{ Name = "T5D3R3", Id = 11, ParentId = 6 },
{ Name = "D4R3", Id = 12, ParentId = 3 },
{ Name = "D4R3", Id = 13, ParentId = 3 }

<Button Content="_OK" ... Command="{Binding Path=OKCommand}">
    <Button.Style>
        <Style TargetType="{x:Type Button}">
            <Setter Property="IsEnabled" Value="false" />
            <Style.Triggers>
                <MultiDataTrigger>
                    <MultiDataTrigger.Conditions>
                        <Condition Binding="{Binding ElementName=cascadingComboFrom, Path=(Validation.HasError)}" Value="false" />
                        <Condition Binding="{Binding ElementName=cascadingComboTo, Path=(Validation.HasError)}" Value="false" />
                    </MultiDataTrigger.Conditions>
                    <Setter Property="IsEnabled" Value="true" />
                </MultiDataTrigger>
            </Style.Triggers>
        </Style>
    </Button.Style>
</Button>