如何通过读取空属性节点跳过 XML 阅读器? [英] How do I Skip XML Reader by reading empty attribute node?

问题描述

我想在这种 XML 文档中跳过空 id 父节点并移动到非空 id 父节点.目前我的程序使用 XmlTextReader 来读取和处理这个 XML.但有时记录 id 可能为空，那时我想跳过此记录父节点，阅读器应移至下一个节点而不读取该空 id 父节点.伙计们，你有什么想法吗?请帮帮我！！！

I want to skip empty id parent node and move to not empty id parent node in this kind of XML document.Currently my program using XmlTextReader to read and process this XML. But sometime record id can be empty and that time I want to skip this record parent node and reader should move to next node without reading that empty id parent node. Guys do you have any idea to do that ? Please help me !!!

`<record id="">
  <record><data></data></record>
  <record><data></data></record>
 </record>
 <record id="###">
  <record><data></data></record>
  <record><data></data></record>
 </record>

`

推荐答案

我喜欢结合使用 XmlReader 和 Xml Linq :

I like using a combination of XmlReader and Xml Linq :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;

namespace ConsoleApplication1
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.xml";
        static void Main(string[] args)
        {
            XmlReader reader = XmlReader.Create(FILENAME);

            while (!reader.EOF)
            {
                if (reader.Name != "record")
                {
                    reader.ReadToFollowing("record");
                }
                if (!reader.EOF)
                {
                    XElement record = (XElement)XElement.ReadFrom(reader);
                    string id = (string)record.Attribute("id");
                    if (id.Length > 0)
                    {
                        Console.WriteLine("id = '{0}'", id.ToString());
                    }
                }
            }
            Console.ReadLine();
        }
    }
}

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