WPF Animation Help

You decide:

Here's what the storyboard would look like in XAML.  You can define multiple storyboards, and apply them as you want:

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300" Loaded="Window_Loaded" ><Window.Resources><Storyboard x:Key="board"><DoubleAnimation Storyboard.TargetName="TransparentStop" 
                              Storyboard.TargetProperty="Offset" By="1"  Duration="0:0:2"   /><DoubleAnimation Storyboard.TargetName="BlackStop" 
                              Storyboard.TargetProperty="Offset" By="1" Duration="0:0:2" 
                              BeginTime="0:0:0.05" /></Storyboard></Window.Resources><Grid><Image Source="Images/UFO.jpg" /><Image Source="Images/ladder.jpg"><Image.OpacityMask><LinearGradientBrush StartPoint="0,0" EndPoint="1,0"><GradientStop Offset="0" Color="Black" x:Name="BlackStop"/><GradientStop Offset="0" Color="Transparent" x:Name="TransparentStop"/></LinearGradientBrush></Image.OpacityMask></Image></Grid></Window>

And here's what the code behind would look like:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Diagnostics;
using System.Windows.Media.Animation;

namespace WpfApplication1
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            ((Storyboard)Resources["board"]).Begin(this);
        }
    }
}

I'd definately prefer the XAML in this situation, as it's a ton more intuitive.  You can always just define more storyboards, and call them up in the code behind using the key name. 

---

David Morton - http://blog.davemorton.net/ - @davidmmorton - ForumsBrowser, a WPF Forums Client