private static void Activate(ThemeType type, string name)
{
var app = Application.Current;
var mergedDictionaries = app.Resources.MergedDictionaries;
var currentTheme = mergedDictionaries
.OfType <ThemeResourceDictionary>()
.FirstOrDefault(d => d.Type == type);
var newTheme = ThemeResourceDictionary.Load(type, name);
if (currentTheme == newTheme)
{
return;
}
if (newTheme != null)
{
mergedDictionaries.Add(newTheme);
}
if (currentTheme != null)
{
mergedDictionaries.Remove(currentTheme);
}
}
public static ThemeResourceDictionary Load(ThemeType type, string name)
{
var uri = new Uri(
string.Format("ui/Resources/Themes/{0}/{1}.xaml", type, name),
UriKind.Relative
);
List <ThemeResourceDictionary> themes;
ThemeResourceDictionary dictionary = null;
if (loadedDictionaries.TryGetValue(type, out themes))
{
dictionary = themes.FirstOrDefault(d => d.Source == uri);
}
return(dictionary
?? new ThemeResourceDictionary {
Source = uri, Type = type
});
}