Question

我的XML文件如下所示：

<root>
    <files>
        <filesource uploadName="20180131T083441_638_Test.doc" originalName="Test.doc">c:\uploadDir\20180131T083441_638_Test.doc</filesource>
        <filesource uploadName="20180131T083441_638_Test1.doc" originalName="Test1.doc">c:\uploadDir\20180131T083441_638_Test1.doc</filesource>
        <filesource uploadName="20180131T083441_638_Test2.doc" originalName="Test2.doc">c:\uploadDir\20180131T083441_638_Test2.doc</filesource>
    </files>
</root>

C＃代码：

// fileNodes has all 3 files sources
XmlNode filesNodes = xmlFile.findNode("/root/files"); 

List<string> filenames = new List<string>();
filesname.add("c:\uploadDir\20180131T083441_638_Test.doc");
filesname.add("c:\uploadDir\20180131T083441_638_Test1.doc");

无论变量filenames包含什么，我想将其保存在XML文件中，其余的我想删除。

Answer 1

使用过的xml linq。不得不从文件名中删除文件夹名称以使代码生效

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

namespace ConsoleApplication23
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.xml";
        static void Main(string[] args)
        {
            List<string> filenames = new List<string>();
            filenames.Add(@"c:\uploadDir\20180131T083441_638_Test.doc");
            filenames.Add(@"c:\uploadDir\20180131T083441_638_Test1.doc");

            List<string> baseFilenames = filenames.Select(x => x.Substring(x.LastIndexOf("\\") + 1)).ToList();

            XDocument doc = XDocument.Load(FILENAME);

            List<XElement> filesources = doc.Descendants("filesource").ToList();

            foreach (XElement filesource in filesources)
            {
                string uploadName = (string)filesource.Attribute("uploadName");
                if (!baseFilenames.Contains(uploadName))
                    filesource.Remove();
            }
        }
    }
}

在C＃中移除XML节点

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