App.xaml

<Application x:Class="RomSync.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:RomSync"
             xmlns:system="clr-namespace:System;assembly=mscorlib"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,,,/ToastNotifications.Messages;component/Themes/Default.xaml" />
            </ResourceDictionary.MergedDictionaries>

            <BitmapImage x:Key="SyncWaitingImage"
                         UriSource="pack://application:,,,/Resources/waiting.png" />

            <BitmapImage x:Key="SyncCompleteImage"
                         UriSource="pack://application:,,,/Resources/greencheck.png" />

            <DataTemplate x:Key="RomItemTemplate">

                <StackPanel Orientation="Horizontal">

                    <Image Name="SyncImage"
                           Height="20"
                           Width="20"
                           Margin="0,0,10,0" />

                    <Image Height="20"
                           Width="20"
                           Margin="0,0,10,0"
                           Source="{Binding Icon}" />

                    <Label Content="{Binding FileInfo.Name}" />

                </StackPanel>

                <DataTemplate.Triggers>

                    <DataTrigger Binding="{Binding SyncStatus}"
                                 Value="0">
                        <Setter TargetName="SyncImage"
                                Property="Source"
                                Value="{StaticResource SyncWaitingImage}" />
                    </DataTrigger>
                    <DataTrigger Binding="{Binding SyncStatus}"
                                 Value="1">
                        <Setter TargetName="SyncImage"
                                Property="Source"
                                Value="{StaticResource SyncCompleteImage}" />
                    </DataTrigger>

                </DataTemplate.Triggers>

            </DataTemplate>

        </ResourceDictionary>
    </Application.Resources>
</Application>