具有嵌套循環的Linq XML查詢

Question

我想閱讀下面的XML並按以下順序打印輸出。 您能為查詢提供幫助嗎？

10主題1 A1 10主題2 B1 10主題3 C1 20主題1 B2 20主題2 A1 20主題3 C2

提前致謝

Answer 1

這是一個示例，您可以如何以所需的形式進行查詢：

XDocument doc = XDocument.Load("test.xml");
var query = from l in doc.Descendants("L1")
            let id = l.Attribute("id").Value
            from subject in l.Descendants("Subject")
            select new
            {
                Id = id,
                SubjectName = (string)subject.Attribute("SubjectName"),
                Score = (string)subject.Attribute("Score")
            };

foreach (var result in query)
{
    Console.WriteLine(result);
}

輸出：

{ Id = 10, SubjectName = Subject1, Score = A1 }
{ Id = 10, SubjectName = Subject2, Score = B1 }
{ Id = 10, SubjectName = Subject3, Score = C1 }
{ Id = 20, SubjectName = Subject1, Score = B2 }
{ Id = 20, SubjectName = Subject2, Score = A1 }
{ Id = 20, SubjectName = Subject3, Score = C2 }