WowUp/WowUp.WPF/Views/ApplicationUpdateControl.xaml

<UserControl x:Class="WowUp.WPF.Views.ApplicationUpdateControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:WowUp.WPF.Views"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">

    <UserControl.Resources>
        <ResourceDictionary>
            <Style x:Key="{x:Type ProgressBar}"
                   TargetType="{x:Type ProgressBar}">
                
                <Setter Property="Foreground">
                    <Setter.Value>
                        <LinearGradientBrush EndPoint="1,1"
                           StartPoint="0,0">
                            <GradientStop Color="{StaticResource White3Color}"
                      Offset="0.5" />
                            <GradientStop Color="{StaticResource White1Color}"
                      Offset="0.95" />
                        </LinearGradientBrush>
                    </Setter.Value>
                </Setter>
            </Style>
        </ResourceDictionary>
    </UserControl.Resources>
    <Grid Visibility="{Binding IsUpdateAvailable, Converter={StaticResource BoolToVisibilty}}"
          Background="{StaticResource Blue1Brush}">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>

        <Border Visibility="{Binding ShowDownload, Converter={StaticResource BoolToVisibilty}}"
                Grid.Row="0"
                Padding="10">
            <StackPanel HorizontalAlignment="Center" 
                            Orientation="Horizontal">
                <TextBlock Margin="10, 0"
                           VerticalAlignment="Center" >
                    <TextBlock.Text>
                        <MultiBinding StringFormat="A new version of WowUp is available! {0}">
                            <Binding Path="LatestVersion" />
                        </MultiBinding>
                    </TextBlock.Text>
                </TextBlock>
                <Button x:Name="DownloadUpdateButton" 
                        Style="{StaticResource PurpleButtonLight}"
                        Command="{Binding DownloadUpdateCommand}">Download</Button>
            </StackPanel>
        </Border>
        <Border Visibility="{Binding ShowProgress, Converter={StaticResource BoolToVisibilty}}"
                Grid.Row="1" 
                Padding="10">
            <StackPanel>
                <TextBlock HorizontalAlignment="Center" Text="{Binding ProgressText}" Margin="0 0 0 5"/>
                <ProgressBar Minimum="0" Maximum="100" Value="{Binding ProgressPercent}" IsIndeterminate="{Binding ProgressIndeterminate}"
                             Height="5"
                             BorderBrush="Transparent"
                             Background="{StaticResource Blue2Brush}" >
                    
                </ProgressBar>
            </StackPanel>
        </Border>
        <Border Visibility="{Binding ShowRestart, Converter={StaticResource BoolToVisibilty}}"
                Grid.Row="2"
                Padding="10">
            <StackPanel HorizontalAlignment="Center" 
                            Orientation="Horizontal">
                <TextBlock Text="A new version of WowUp is available!" 
                               Margin="10, 0"
                               VerticalAlignment="Center" />
                <Button x:Name="RestartButton" 
                        Style="{StaticResource purpleButton}"
                        Command="{Binding RestartAppCommand}">Restart</Button>
            </StackPanel>
        </Border>
    </Grid>
</UserControl>