WPF

Uri iconUri = null;
if (AppCore.IsTestMode)
{
    iconUri = new Uri("my_test.ico", UriKind.Relative);
}
else
{
    iconUri = new Uri("my.ico", UriKind.Relative);
}

this.Icon = BitmapFrame.Create(iconUri);

1. Set the installation location
2. Set the IsTestMode setting
3. Change the desktop icon.

public class NavigationViewFilterEventArgs : RoutedEventArgs
{
    public List<LookupEntity> StatusFilters { get; private set; }

    public List<LookupEntity> FilterItems { get; private set; }

    public NavigationViewFilterEventArgs(RoutedEvent e, List<LookupEntity> statusFilters, List<LookupEntity> filterItems) :
        base(e)
    {
        StatusFilters = statusFilters;
        FilterItems = filterItems;
    }
}

public static readonly RoutedEvent FilterExecutedEvent =
            EventManager.RegisterRoutedEvent("FilterExecuted",
            RoutingStrategy.Bubble,
            typeof(RoutedEventHandler),
            typeof(NavigationView));

public event RoutedEventHandler FilterExecuted
{
    add { AddHandler(FilterExecutedEvent, value); }
    remove { RemoveHandler(FilterExecutedEvent, value); }
}

private void RaiseFilterExecutedEvent()
{
    var args = new NavigationViewFilterEventArgs(FilterExecutedEvent, StatusFilters, FilterItems);
    RaiseEvent(args);
}

<ctrls:NavigationView Grid.Row="7" 
                        Caption="Companies"
                        StatusFilters="{Binding DataContext.CompanyStatusFilterItems, 
                                                ElementName=window, Mode=TwoWay, 
                                                UpdateSourceTrigger=PropertyChanged}">

    <i:Interaction.Triggers>
        <i:EventTrigger EventName="FilterExecuted">
            <i:InvokeCommandAction Command="{Binding DataContext.CompanyFilterExecutedEventCommand, 
                                                        ElementName=window}"/>
        </i:EventTrigger>
    </i:Interaction.Triggers>

</ctrls:NavigationView>

private ICommand _CompanyFilterExecutedEventCommand;
public ICommand CompanyFilterExecutedEventCommand
{
    get
    {
        if (_CompanyFilterExecutedEventCommand == null)
            _CompanyFilterExecutedEventCommand = new RelayCommand<NavigationViewFilterEventArgs>(p => CompanyFilterExecutedEventExecuted(p), p => CompanyFilterExecutedEventCanExecute());
        return _CompanyFilterExecutedEventCommand;
    }
}

private bool CompanyFilterExecutedEventCanExecute()
{
    return true;
}

private void CompanyFilterExecutedEventExecuted(NavigationViewFilterEventArgs args)
{
}

<Window x:Class="SMS_Sender_3._0.MainWindow"
        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:local="clr-namespace:SMS_Sender_3._0"
        mc:Ignorable="d"
        Title="SMS Sender 3.0" Height="350" Width="525">
    <Grid>
        <Border Margin="8">
            <StackPanel>

                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="50" />
                        <ColumnDefinition Width="*" />
                    </Grid.ColumnDefinitions>
                    <TextBlock Grid.Column="0" Text="Phone:" />
                    <TextBox Grid.Column="1" />
                </Grid>

                <TextBlock Text="Message:" />

                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="50" />
                        <ColumnDefinition Width="*" />
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="225" />
                    </Grid.RowDefinitions>

                    <TextBox Grid.Column="1" />
                </Grid>

                <Grid Margin="0,3,0,0">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="50" />
                        <ColumnDefinition Width="150" />
                        <ColumnDefinition Width="60" />
                        <ColumnDefinition Width="*" />
                    </Grid.ColumnDefinitions>
                    <TextBlock Grid.Column="0" Text="Mall:" />
                    <ComboBox Grid.Column="1" />
                    <TextBlock Margin="5,0,0,0" Grid.Column="2" Text="0/160(1)" />
                    <Button Grid.Column="3" HorizontalAlignment="Right" Content="_Send" Width="100" />
                </Grid>
                <Grid Margin="0,3,0,0">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="50" />
                        <ColumnDefinition Width="*" />
                    </Grid.ColumnDefinitions>
                    <TextBlock Grid.Column="0" Text="Type:" />
                    <ComboBox Grid.Column="1" HorizontalAlignment="Left" Width="150" />
                </Grid>
            
            </StackPanel>
        </Border>
    </Grid>
</Window>

<Page.DataContext>
    <vm:DisplayViewModel/>
</Page.DataContext>
...
<Button x:Name="btnDpOpen" Style="{DynamicResource ButtonStyle}" Width="120" Command="{Binding OpenFile}">
...

<Page.DataContext>
    <vm:DisplayViewModel/>
</Page.DataContext>
...
<Image x:Name="imgDisplayView" Source="{Binding ImagePath}">
	<Image.RenderTransform>
		<TransformGroup>
			<TranslateTransform/>
			<RotateTransform/>
			<ScaleTransform/>
		</TransformGroup>
	</Image.RenderTransform>
</Image>
...

class DisplayViewModel : ViewModelBase
{
	private DisplayImageModel image { get; set; }

	private ObservableCollection<DisplayImageModel> imagelist = new ObservableCollection<DisplayImageModel>();
	public ObservableCollection<DisplayImageModel> ImageList
	{
		get { return imagelist; }
		set
		{
			imagelist = value;
			OnPropertyChanged();
		}
	}

	public string ImagePath
	{
		get { return image.Path; }
		set
		{
			if (image.Path != value)
			{
				image.Path = value;
				OnPropertyChanged();
			}
		}
	}

	public DisplayViewModel()
	{
		image = new DisplayImageModel();
		ImagePath = @"C:\Users\oscartsai\Desktop\lenna.png";
	}

	public bool CanExecute()
	{
		return true;
	}

	public RelayCommand OpenFile
	{
		get { return new RelayCommand(openFile, CanExecute); }
	}

	private void openFile()
	{
		string[] picExtName = new string[] { ".PNG", ".JPG", "JEPG", "BMP" };

		OpenFileDialog dlgOpenFile = new OpenFileDialog() 
		{ Filter = "Picture|*.jpg;*.jpeg;*.bmp;*.png|All File|*.*" };
		if (dlgOpenFile.ShowDialog() != true)
		{
			return;
		}
		if (picExtName.Any(System.IO.Path.GetExtension(dlgOpenFile.FileName).ToUpper().Contains))
		{
			ImagePath = dlgOpenFile.FileName;
			OnPropertyChanged();

		}
	}
}

public abstract class ViewModelBase : INotifyPropertyChanged
{
	public event PropertyChangedEventHandler PropertyChanged;

	public void SetValue<T>(ref T property, T value, [CallerMemberName] string propertyName = null)
	{
		if (property != null)
		{
			if (property.Equals(value))
			{
				return;
			}
		}

		property = value;
		OnPropertyChanged(propertyName);
	}

	protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
	{
		if (PropertyChanged != null)
		{
			PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
		}
	}
}

public class RelayCommand : ICommand
{
	readonly Func<bool> _canExecute;
	readonly Action _execute;

	public RelayCommand(Action execute) : this(execute, null)
	{
	}

	public RelayCommand(Action execute, Func<bool> canExecute)
	{
		_execute = execute ?? throw new ArgumentNullException("execute");
		_canExecute = canExecute;
	}
	
	public event EventHandler CanExecuteChanged
	{
		add
		{
			if (_canExecute != null) CommandManager.RequerySuggested += value;
		}
		remove
		{
			if (_canExecute != null) CommandManager.RequerySuggested += value;
		}
	}

	[DebuggerStepThrough]
	public bool CanExecute(object parameter)
	{
		return _canExecute == null ? true : _canExecute();
	}

	public void Execute(object parameter)
	{
		_execute();
	}
}

FocusManager.FocusedElement="{Binding FocusedElementName}"

<Style TargetType="Button" x:Key="FooStyle">
    <Style.Resources>
        <system:Double x:Key="FrameOneValue">1.0</system:Double>
        <system:Double x:Key="FrameTwoValue">1.05</system:Double>
    </Style.Resources>
    <Setter Property="FontWeight" Value="Bold" />
    <Setter Property="RenderTransformOrigin" Value="0.5 0.5" />
    <Setter Property="RenderTransform">
        <Setter.Value>
            <TransformGroup>
                <ScaleTransform/>
            </TransformGroup>
        </Setter.Value>
    </Setter>
    <Style.Triggers>
        <Trigger Property="IsMouseOver" Value="True">
            <Trigger.EnterActions>
                <BeginStoryboard>
                    <Storyboard>
                        <DoubleAnimationUsingKeyFrames 
                            Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)">
                            <EasingDoubleKeyFrame KeyTime="0:0:0.1" Value="{DynamicResource FrameOneValue}"/>
                            <EasingDoubleKeyFrame KeyTime="0:0:0.2" Value="{DynamicResource FrameTwoValue}"/>
                        </DoubleAnimationUsingKeyFrames>
                        <DoubleAnimationUsingKeyFrames 
                            Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)">
                            <EasingDoubleKeyFrame KeyTime="0:0:0.1" Value="{DynamicResource FrameOneValue}"/>
                            <EasingDoubleKeyFrame KeyTime="0:0:0.2" Value="{DynamicResource FrameTwoValue}"/>
                        </DoubleAnimationUsingKeyFrames>
                    </Storyboard>
                </BeginStoryboard>
            </Trigger.EnterActions>
            <Trigger.ExitActions>
                <BeginStoryboard>
                    <Storyboard>
                        <DoubleAnimationUsingKeyFrames 
                            Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)">
                            <EasingDoubleKeyFrame KeyTime="0:0:0.1" Value="{DynamicResource FrameTwoValue}"/>
                            <EasingDoubleKeyFrame KeyTime="0:0:0.2" Value="{DynamicResource FrameOneValue}"/>
                        </DoubleAnimationUsingKeyFrames>
                        <DoubleAnimationUsingKeyFrames 
                            Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)">
                            <EasingDoubleKeyFrame KeyTime="0:0:0.1" Value="{DynamicResource FrameTwoValue}"/>
                            <EasingDoubleKeyFrame KeyTime="0:0:0.2" Value="{DynamicResource FrameOneValue}"/>
                        </DoubleAnimationUsingKeyFrames>
                    </Storyboard>
                </BeginStoryboard>
            </Trigger.ExitActions>
        </Trigger>
    </Style.Triggers>
</Style>

<Style TargetType="{x:Type Button}" x:Key="Bar1Style" BasedOn="{StaticResource FooStyle}">
    <Style.Resources>
        <system:Double x:Key="FrameOneValue">2.0</system:Double>
        <system:Double x:Key="FrameTwoValue">2.05</system:Double>
    </Style.Resources>
    <Setter Property="Background" Value="Blue" />
</Style>

<Style TargetType="{x:Type Button}" x:Key="Bar2Style" BasedOn="{StaticResource FooStyle}">
    <Style.Resources>
        <system:Double x:Key="FrameOneValue">3.0</system:Double>
        <system:Double x:Key="FrameTwoValue">3.05</system:Double>
    </Style.Resources>
    <Setter Property="Background" Value="Red" />
</Style>

<Window x:Class="Main.MainWindow"
        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:local="clr-namespace:Main"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">

    <StackPanel Orientation="Vertical">
        <Button Content="btn1" Style="{DynamicResource FooStyle}" />
        <Button Content="btn2" Style="{DynamicResource Bar1Style}" />
        <Button Content="btn2" Style="{DynamicResource Bar2Style}" />
    </StackPanel>
</Window>

Cannot freeze this Storyboard timeline tree for use across threads

List _userRights = new List
{
    "can_add_employees",
    "can_edit_employees",
};

public static class SecurityBehavior
{
    private static readonly char[] TagSeparators = { '|' };

    #region Allow Enable
    public static readonly DependencyProperty AllowEnableProperty =
        DependencyProperty.RegisterAttached("AllowEnable",
        typeof(bool),
        typeof(SecurityBehavior),
        new PropertyMetadata(false, OnSecurityChanged));

    public static bool GetAllowEnable(DependencyObject obj)
    {
        return (bool)obj.GetValue(AllowEnableProperty);
    }

    public static void SetAllowEnable(DependencyObject obj, bool value)
    {
        obj.SetValue(AllowEnableProperty, value);
    }
    #endregion

    #region Security Tags
    public static readonly DependencyProperty SecurityTagsProperty =
        DependencyProperty.RegisterAttached("SecurityTags",
        typeof(string), typeof(SecurityBehavior),
        new PropertyMetadata("", OnSecurityChanged));

    public static string GetSecurityTags(DependencyObject obj)
    {
        return (string)obj.GetValue(SecurityTagsProperty);
    }

    public static void SetSecurityTags(DependencyObject obj, string value)
    {
        obj.SetValue(SecurityTagsProperty, value);
    }

    private static void OnSecurityChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
    {
        bool canEnable = GetAllowEnable(sender);
        if (canEnable)
        {
            string[] tags = GetSecurityTags(sender).Split(TagSeparators, StringSplitOptions.RemoveEmptyEntries);
            foreach (string tag in tags)
            {
                canEnable &= SecurityService.HasRights(tag);
            }
        }

        var element = (UIElement)sender;
        element.IsEnabled = canEnable;
    }
    #endregion
}

public static class SecurityService
{
    private static List<string> _userRights;

    public static bool HasRights(string right)
    {
        return _userRights.Contains(right);
    }

    // This is here for this demo. In production this will be read
    // in from the security rights table
    static SecurityService()
    {
        _userRights = new List
        {
            "can_add_employees",
            "can_edit_employees",
        };
    }
}

<TextBox Grid.Row="0" 
         Grid.Column="1"
         Text="{Binding EmployeeName, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
         local:SecurityBehavior.AllowEnable="{Binding AreFieldsEnabled, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
         local:SecurityBehavior.SecurityTags="can_add_employees|can_edit_employees"/>

1. This approach requires that I have the tags listed in the XAML. I can then add or remove tags to any specific UI element as needed, but it requires going back into the XAML to do so. I was considering setting the element's Name and have the service look it up and determine if it can be enabled.
2. In some cases there are addition factors that determine if/when a UI element should be enabled, such as another checkbox beging checked, or a specific combox box item being selected somewhere else.

<Window x:Class="Main.MainWindow"
        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:sys="clr-namespace:System;assembly=mscorlib">

    <Window.Resources>
        <Style x:Key="FooStyle" TargetType="TextBlock">
            <Style.Resources>
                <sys:Double x:Key="Wid">20</sys:Double>
            </Style.Resources>
            <Setter Property="Width" Value="{StaticResource Wid}" />
            <Setter Property="FontWeight" Value="Bold" />
        </Style>
        <Style x:Key="BarStyle" TargetType="TextBlock" BasedOn="{StaticResource FooStyle}">
            <Style.Resources>
                <sys:Double x:Key="Wid">40</sys:Double>
            </Style.Resources>
        </Style>
    </Window.Resources>

    <StackPanel Orientation="Vertical">
        <TextBlock Text="txt1" Background="red" Width="100" />
        <TextBlock Text="txt2" Background="Lime" Style="{StaticResource FooStyle}" />
        <TextBlock Text="txt3" Background="Blue" Style="{StaticResource BarStyle}" />
    </StackPanel>
</Window>