使用嵌套循環的Linq XML查詢

Question

我想閱讀下面的XML並按以下順序打印輸出。你可以幫助查詢？

10 Subject1 A1 10 Subject2 B1 10 Subject3 C1 20 Subject1 B2 20 Subject2 A1 20 Subject3 C2

預先感謝

Answer 1

這裏的示例如何可以查詢以你想要的形式：

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 }