Xdocument使用Linq获取subelemnts属性

Question

我有以下XML，我将其加载到XDocument

<ConversionSpecification xmlns="http://tempuri.org/X12ParserSpecification.xsd" TransactionSetIdentifierCode="837">
  <Loop LoopId="1000A" Name="SNAME" Identifier="NM1*41">  
    <Segment SegmentId="NM1" Usage="R"/>  
    <Segment SegmentId="PER" Usage="R"/>  
  </Loop>  
  <Loop LoopId="1000B" Name="RNAME" Identifier="NM1*40">
    <Segment SegmentId="NM1" Usage="R"/>  
  </Loop>  
  <Loop LoopId="2000B" Name="SHLOOP" Identifier="22">      
    <Segment SegmentId="SBR" Usage="R"/>  
    <Segment SegmentId="PAT" Usage="S"/>  
  </Loop>  
</ConversionSpecification> 



XDocument document = XDocument.Load("Files/Loops.xml"); 
XNamespace ns = XNamespace.Get("http://tempuri.org/X12ParserSpecification.xsd");

var loopInfo = from loop in document.Descendants(ns + "Loop")
               select new Loop
               {
                  LoopID = loop.Attribute("LoopId").Value,
                  LoopIdentifier = loop.Attribute("Identifier").Value
                  LoopSegments = 
                  LoopUsage =  
               };

Loop在哪里：

 class Loop    
 {  
     public string LoopID { get; set; }  
     public string LoopIdentifier { get; set; }  
     public string[] LoopSegments { get; set; }          
     public string[] LoopUsage { get; set; }  
 }  

现在我想为LoopElements分配SegmentID属性值，并为LoopUsage分配使用属性值。有没有办法用一个子查询来做到这一点？

Answer 1

这就是你要追求的吗？

var loopInfo = from loop in document.Descendants(ns + "Loop")
               select new Loop
               {
                   LoopID = loop.Attribute("LoopId").Value,
                   LoopIdentifier = loop.Attribute("Identifier").Value,
                   LoopSegments = loop.Descendants(ns + "Segment").Select(s => s.Attribute("SegmentId").Value).ToArray(),
                   LoopUsage =  loop.Descendants(ns + "Segment").Select(s => s.Attribute("Usage").Value).ToArray()
               };

输出如下：