public override object ProvideValue(IServiceProvider serviceProvider)
{
Style result = new Style();
foreach (var styleKey in m_stylesKeys)
{
Style style = (Style)new StaticResourceExtension(styleKey).ProvideValue(serviceProvider);
if (style == null) new ArgumentException(styleKey + " not found");
result.Merge(style);
}
return result;
}
/// <summary>
/// Returns a style that merges all styles with the keys specified in the constructor.
/// </summary>
/// <param name="serviceProvider">The service provider for this markup extension.</param>
/// <returns>A style that merges all styles with the keys specified in the constructor.</returns>
public override object ProvideValue(IServiceProvider serviceProvider)
{
Style resultStyle = new Style();
foreach(string currentResourceKey in resourceKeys) {
object key = currentResourceKey;
if(currentResourceKey == ".") {
IProvideValueTarget service = (IProvideValueTarget)serviceProvider.GetService(typeof(IProvideValueTarget));
key = service.TargetObject.GetType();
}
Style currentStyle = new StaticResourceExtension(key).ProvideValue(serviceProvider) as Style;
if(currentStyle == null)
throw new InvalidOperationException("Could not find style with resource key " + currentResourceKey + ".");
resultStyle.Merge(currentStyle);
}
return resultStyle;
}