Question

以下是我的xml文件的结构：

<adlibXML>
   <recordList>
        <record priref="1" selected="False">
              <collection>TEXTILES</collection>
              <someotherelements>xyz</someotherelements>
        </record>
        <record priref="2" selected="False">
                  <collection>CERAMICS</collection>
                  <someotherelements>xyz</someotherelements>
        </record>
        <record priref="3" selected="False">
                  <collection>PAINTING</collection>
                  <someotherelements>xyz</someotherelements>
        </record>
        <record priref="4" selected="False">
                  <collection>TEXTILES</collection>
                  <someotherelements>xyz</someotherelements>
        </record>
   </recordList>

我使用来自供应商的数据库中的某些API来获取此xml文件。我的新数据库中有三个表，Catalog，Collection和Artifacts。我想根据它的值（如'TEXTILES'，'CERAMICS'等）对collection元素进行分组，并使用一个计数器变量来计算我拥有的集合数。然后使用我可以创建collectionID＆amp; collectionTitle在我的Collection表中动态生成。

我无法解决它。直到现在我只完成了这段代码：

var getcontent = from record in xmldoc.Descendants("record")
                 //this group by doesn't work
                 group record by record.Element("collection")
                 select record.Element("collection").Value;                     

foreach (var node in getcontent)
{
    Response.Write("Collection: " + node + "<br/>");
}

Answer 1

尝试以下几行：

var groups = from record in xmldoc.Descendants("record")
             group record by (string)record.Element("collection") into g
             select new {
               key = g.Key,
               count = g.Count()
             }

foreach (var group in groups)
{
  Response.Write("Collection " + group.key + " has " + group.count + " member(s).");
}

使用LINQ to XML如何根据其值对元素进行分组？

1 个答案: