[英]How can I access this in C#?
private void LoadSubforums(Forum forum, XElement subforumsXML)
{
forum.Subforums = (from forumItem in subforumsXML.Descendants("forum")
select new Subforum()
{
ID = (string)forumItem.Element("id"),
Name = (string)forumItem.Element("name"),
URL = (string)forumItem.Element("url"),
Description = (string)forumItem.Element("description"),
Type = (string)forumItem.Element("type"),
TopicCount = (string)forumItem.Element("topics"),
ReplyCount = (string)forumItem.Element("replies"),
LastPost = ParseLastPost(forumItem.Element("lastpost")),
IsRedirect = How can I access the LastPost attribute here? :S
}).ToList();
}
}
Subforum
类的IsRedirect
属性取决于LastPost
属性中的值。
我可以从Linq查询中访问此属性吗?
编辑:
这就是我想要做的:
forum.Subforums = (from forumItem in subforumsXML.Descendants("forum")
let lastPost = ParseLastPost(forumItem.Element("lastpost"))
select new Subforum()
{
ID = (string)forumItem.Element("id"),
Name = (string)forumItem.Element("name"),
URL = (string)forumItem.Element("url"),
Description = (string)forumItem.Element("description"),
Type = (string)forumItem.Element("type"),
TopicCount = (string)forumItem.Element("topics"),
ReplyCount = (string)forumItem.Element("replies"),
LastPost = lastPost,
IsRedirect = if(lastPost.ID == null) ? true ; false
}).ToList();
但是此代码无法编译。
forum.Subforums = (from forumItem in subforumsXML.Descendants("forum")
let lastPost = ParseLastPost(forumItem.Element("lastpost"))
select new Subforum()
{
ID = (string)forumItem.Element("id"),
Name = (string)forumItem.Element("name"),
URL = (string)forumItem.Element("url"),
Description = (string)forumItem.Element("description"),
Type = (string)forumItem.Element("type"),
TopicCount = (string)forumItem.Element("topics"),
ReplyCount = (string)forumItem.Element("replies"),
LastPost = lastPost,
IsRedirect = !string.IsNullOrEmpty(lastPost)
}).ToList();
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