C,使用lambda进行集合初始化

Func<XElement[]> elementCreatorFunc = 
    () => new[] { new XElement(...), new XElement(...) };

XDocument doc = new XDocument(
    new XDeclaration("1.0", "utf-8", "yes"),
        new XElement("data",
            new XElement("album",
                elementCreatorFunc()
                )
            )
        );

以下是最终解决方案。因此,我不是在内联执行外部函数:

XDocument doc = new XDocument(new XDeclaration("1.0", "utf-8", "yes"), 
    new XElement("data", 
        new XElement("album",
            (from item in Model.Items
             select new XElement("slide",
                         new XAttribute("title", item.title)))

        )
    )
);