使用linq基于xml从xml获取xml列表，如果不存在，则在c＃中选择false条件标记元素

Question

here i am trying to get custName name if pirmaryCustCheck is true if not then i have to select false tag element , how can i achieve this xml :

<Root>
  <data>
    <office>Mumba</office>
    <officeId>1JC9FJBM</officeId>
    <customer>
        <custName>Yash</custName>
        <pirmaryCustCheck>true</pirmaryCustCheck>
        <id>8</id>
      </customer>
    <customer>
      <custName> Rahul</custName>
        <pirmaryCustCheck>false</pirmaryCustCheck>
        <id>9</id>
      </customer>
  </data>
</Root>

code :

   string pathd = @"C:\Users\admin\documents\newCust.xml";

            XDocument docss = XDocument.Load(pathd);


            var records = docss.Descendants("data").Select(x => new
            {

                office = (string)x.Element("office"),
                officeId = (string)x.Element("officeId"),
                customer = x.Elements("customer").Select(y => new
                {
                    custName = (string)y.Element("custName"),
                    pirmaryCustCheck = (bool)y.Element("pirmaryCustCheck"),
                    id = (string)y.Element("id")
                }).Where(y => y.pirmaryCustCheck == true).Select(c => new
                {
                    custName = c.custName,
                    Id = c.id
                })
            }).FirstOrDefault();

Answer 1

You may want to try something like below.

Data Set

<Root>
<data>
<office>Mumba</office>
<officeId>1JC9FJBM</officeId>
<customer>
    <custName>Yash</custName>
    <pirmaryCustCheck>true</pirmaryCustCheck>
    <id>8</id>
  </customer>
<customer>
  <custName> Rahul</custName>
    <pirmaryCustCheck>false</pirmaryCustCheck>
    <id>9</id>
  </customer>
 </data>
 <data>
<office>Mumba</office>
<officeId>1JC9FJBM</officeId>
<customer>
    <custName>Yash</custName>
    <pirmaryCustCheck>false</pirmaryCustCheck>
    <id>11</id>
  </customer>
<customer>
  <custName> Rahul Jain</custName>
    <pirmaryCustCheck>false</pirmaryCustCheck>
    <id>10</id>
  </customer>
</data>

Code -

string pathd = @"C:\Users\admin\documents\newCust.xml";

        XDocument docss = XDocument.Load(pathd);

        var customerTrue = docss.Descendants("data").Elements("customer").Select(x => x).FirstOrDefault();
        var customerFalse = docss.Descendants("data").Elements("customer").Select(x => x).LastOrDefault();

        var records = docss.Descendants("data").Select(x => new
        {

            office = (string)x.Element("office"),
            officeId = (string)x.Element("officeId"),
            customer = new
            {
                custName = (bool)x.Elements("customer").First().Element("pirmaryCustCheck") ? (string)x.Elements("customer").First().Element("custName") : (string)x.Elements("customer").Last().Element("custName"),
                pirmaryCustCheck = (bool)x.Elements("customer").First().Element("pirmaryCustCheck"),
                id = (bool)x.Elements("customer").First().Element("pirmaryCustCheck") ? (string)x.Elements("customer").First().Element("id") : (string)x.Elements("customer").Last().Element("id")
            }
        }).ToList();

Answer 2

Try below code, its tested.

var customers = (from e in docss.Descendants("data").Elements("customer")
                         where (bool)e.Element("pirmaryCustCheck") == true
                         select new 
                         {
                             Name = (string)e.Element("custName"),
                             Id = (string)e.Element("id"),
                         }).ToList();