如何使用linq获取此xml的值？

Question

我的xml中有以下内容：

  <mur>
       <bak>
       </bak> 
        <itemfb ident="c_fb">
            <flow_m>
                <mat>
                <text texttype="text/plain">correct answer comments</text>
                </mat>
            </flow_m>
        </itemfb>
        <itemfb ident="gc_fb">
            <flow_m>
                <mat>
                <text texttype="text/plain">wrong, you made a blunder</text>
                </mat>
            </flow_m>
        </itemfb>
  </mur>

现在，'itemfb'标签可能存在也可能不存在于'mur'标签内，如果存在，我需要解析并获取值“正确答案评论”（或）“错误，你犯了一个大错”取决于“itemfb”ident。这是我尝试过的。假设rowObj从“mur”加载了xml，而'ns'是命名空间

            if (rowObj.Elements(ns + "itemfb").Any())
            {
                var correctfb = (from cfb in rowObj
                                .Descendants(ns + "itemfb")
                                where (string)cfb.Attribute(ns + "ident").Value == "cfb"
                                select new
                                { 
                                ilcfb = (string)cfb.Element(ns + "mat")
                                }).Single();

            some_variable_1 = correctfb.ilcfb;



                var incorrectfb = (from icfb in rowObj
                                .Descendants(ns + "itemfb")
                                where (string)icfb.Attribute(ns + "ident").Value == "gcfb"
                                select new 
                                { 
                                ilicfb = (string)icfb.Element(ns + "mat")
                                }).Single();

            some_variable_2 = incorrectfb.ilicfb;
            }

Answer 1

这应该是获取所需信息的一种方式。为简单起见，我省略了ns。

var correctfb = rowObj.Descendants("mur")
   .Descendants("itemfb")
   .Where(e => e.Attribute("ident").Value == "c_fb")
   .Descendants("text").FirstOrDefault();

if (correctfb != null)
    some_variable_1 = correctfb.Value;

var incorrectfb = rowObj.Descendants("mur")
   .Descendants("itemfb")
   .Where(e => e.Attribute("ident").Value == "gc_fb")
   .Descendants("text").FirstOrDefault();

if (incorrectfb != null)
    some_variable_2 = incorrectfb.Value;