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Jammers (Hopefully) Useful C# WPF Silverlight Code Snippets

On this page I'm going to slowly organise useful little bits of code that I either write or find (will obviously credit the authors) just so that I or anyone that finds this page can quickly find useful things.

Animations

Fade Extension Method - WPF

        public static void Fade(this UIElement control, double sourceOpacity, double targetOpactity, int milliseconds)
        {
            control.BeginAnimation(UIElement.OpacityProperty, 
                                   new DoubleAnimation(sourceOpacity, targetOpactity, 
                                   new Duration(TimeSpan.FromMilliseconds(milliseconds))));
        }

Fade Extension Method - Silverlight

        public static void Fade(this FrameworkElement control, double sourceOpacity, double targetOpactity, int milliseconds)
        {
            var doubleAnimation = new DoubleAnimation
                                      {
                                          From = sourceOpacity,
                                          To = targetOpactity,
                                          Duration = new Duration(TimeSpan.FromMilliseconds(milliseconds))
                                      };
 
            control.BeginAnimation(UIElement.OpacityProperty, doubleAnimation);
        }

Generics

Generic List with Fluent Interface

using System.Collections.Generic;
 
namespace JamSoft.Mvvm.ToyBox.Core
{
    public class FluentList<T> : List<T>
    {
        public new FluentList<T> Add(T obj)
        {
            base.Add(obj);
            return this;
        }
 
        public new FluentList<T> AddRange(IEnumerable<T> objs)
        {
            base.AddRange(objs);
            return this;
        }
    }
}

With this little wrapper around a normal List you can do this:

            var stringList = new FluentList<string>()
                .Add("Moon")
                .Add("Alpha Centauri")
                .Add("Sirius");

Number Crunching

Is Even Number

        public static bool IsEven(int intValue)
        {
            return ((intValue % 2) == 0);
        }