C# Xml元素节点被追加两次 ** 1. 计算器.txt 1.jpg 1. 2. 3. **

我想要像上面的XML一样的输出。为此，我编写了下面的代码。如果现有XML文档中存在完整路径，则不要添加它，但使用XML下面的代码是错误的。添加了两个内容节点

 **<Content>
    <UId>1</UId>
    <FileName>Calculator.txt</FileName>
    <Image>1.jpg<Image/>
    <FullPath>1</FullPath>
    <FullPath>2</FullPath>
    <FullPath>3</FullPath>
  </Content>**

string fullPath=“1$2$3”；
List nodesToBeAdded=fullPath.Split（“$”）.ToList（）；
XmlDocument XmlDocument=新的XmlDocument（）；
加载（文件路径）；
XmlNode nodeContent=xmlDocument.CreateNode（XmlNodeType.Element，“Content”，null）；
XmlNode nodeUID=xmlDocument.CreateNode（XmlNodeType.Element，“UId”，null）；
nodeUID.InnerText=value.UId；
XmlNode nodeFileName=xmlDocument.CreateNode（XmlNodeType.Element，“文件名”，null）；
nodeFileName.InnerText=value.FileName；
XmlNode nodeImage=xmlDocument.CreateNode（XmlNodeType.Element，“Image”，null）；
nodeImage.InnerText=value.Image；
for（int i=0；i

输出：

string fullPath="1$2$3";
List<string> nodesToBeAdded = fullPath.Split('$').ToList();

XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(filePath);

XmlNode nodeContent = xmlDocument.CreateNode(XmlNodeType.Element, "Content", null);

XmlNode nodeUID = xmlDocument.CreateNode(XmlNodeType.Element, "UId", null);
nodeUID.InnerText = value.UId;

XmlNode nodeFileName = xmlDocument.CreateNode(XmlNodeType.Element, "FileName", null);
nodeFileName.InnerText = value.FileName;

XmlNode nodeImage = xmlDocument.CreateNode(XmlNodeType.Element, "Image", null);
nodeImage.InnerText = value.Image;

for (int i = 0; i < nodesToBeAdded.Count - 1; i++)
{
    XmlNode nodeFullPath = xmlDocument.CreateNode(XmlNodeType.Element, "FullPath", null);
    nodeFullPath.InnerText = nodesToBeAdded[i];

    if (xmlDocument.SelectNodes(string.Concat("//", "Content", '/', "FullPath", "[text()='" + nodesToBeAdded[i] + "']")).Count == 0)
    {
        nodeContent.AppendChild(nodeUID);
        nodeContent.AppendChild(nodeFileName);
        nodeContent.AppendChild(nodeImage);
        nodeContent.AppendChild(nodeFullPath);
    }
}//add parent node to document
xmlDocument.DocumentElement.AppendChild(nodeContent);

xmlDocument.Save(filePath);

1.
计算器.txt
1.jpg
1.

假设您的XML如下所示：

<Content>
    <UId>1</UId>
    <FileName>Calculator.txt</FileName>
    <Image>1.jpg</Image>
    <FullPath>1</FullPath>
  </Content>
  <Content />  
  <Content />
  <Content />
  <Content />

---

如果我正确理解了您的情况，请移动

xmlDocument.DocumentElement.AppendChild（nodeContent）到
if
块应有助于：

   var r = new root();
   r.Content = new rootContent[2];
   r.Content[0] = new rootContent() { UId = 1, FileName = "file1.jpg" };
   r.Content[1] = new rootContent() { UId = 2, FileName = "file2.jpg" };


   var serializer = new System.Xml.Serialization.XmlSerializer(typeof(root));
   serializer.Serialize(File.Create(@"C:\temp\file.xml"), r);

string fullPath=“1$2$3”；
List nodesToBeAdded=fullPath.Split（“$”）.ToList（）；
XmlDocument XmlDocument=新的XmlDocument（）；
加载（文件路径）；
XmlNode nodeContent=xmlDocument.CreateNode（XmlNodeType.Element，“Content”，null）；
XmlNode nodeUID=xmlDocument.CreateNode（XmlNodeType.Element，“UId”，null）；
nodeUID.InnerText=value.UId；
XmlNode nodeFileName=xmlDocument.CreateNode（XmlNodeType.Element，“文件名”，null）；
nodeFileName.InnerText=value.FileName；
XmlNode nodeImage=xmlDocument.CreateNode（XmlNodeType.Element，“Image”，null）；
nodeImage.InnerText=value.Image；
bool addNodeContent=false；
for（int i=0；i

否则，将添加空节点。但是我仍然不确定代码中的一些时刻，所以请考虑使用C语言中提供的自动XML序列化工具。
 < P>我不确定你写XML的规则，但是我可以看到你必须写多个内容，并且<强>全文路径>不能在<强>相同的内容< /强>中重复，对吗？
因此，正如我在代码中看到的if语句负责生成空的标记，因为当您使用指令时

string fullPath="1$2$3";
List<string> nodesToBeAdded = fullPath.Split('$').ToList();

XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(filePath);

XmlNode nodeContent = xmlDocument.CreateNode(XmlNodeType.Element, "Content", null);

XmlNode nodeUID = xmlDocument.CreateNode(XmlNodeType.Element, "UId", null);
nodeUID.InnerText = value.UId;

XmlNode nodeFileName = xmlDocument.CreateNode(XmlNodeType.Element, "FileName", null);
nodeFileName.InnerText = value.FileName;

XmlNode nodeImage = xmlDocument.CreateNode(XmlNodeType.Element, "Image", null);
nodeImage.InnerText = value.Image;

bool addNodeContent = false;
for (int i = 0; i < nodesToBeAdded.Count - 1; i++)
{
    XmlNode nodeFullPath = xmlDocument.CreateNode(XmlNodeType.Element, "FullPath", null);
    nodeFullPath.InnerText = nodesToBeAdded[i];

    if (xmlDocument.SelectNodes(string.Concat("//", "Content", '/', "FullPath", "[text()='" + nodesToBeAdded[i] + "']")).Count == 0)
    {
        nodeContent.AppendChild(nodeUID);
        nodeContent.AppendChild(nodeFileName);
        nodeContent.AppendChild(nodeImage);
        nodeContent.AppendChild(nodeFullPath);

        addNodeContent = true;
    }
}

if (addNodeContent)
{
   //add parent node to document
   xmlDocument.DocumentElement.AppendChild(nodeContent);
}

xmlDocument.Save(filePath);

您将查找具有text=nodestobeaded[i]的任何完整路径，在第一个循环之后，您的条件
if（xmlDocument.SelectNodes（string.Concat（“/”、“Content”、“/”、“/”、“fullpath”、“[text（）=”+nodestobeaded[i]+“]）。计数==0）
将始终返回true，因此无法执行可用于添加节点上所有元素的代码

我在您的代码中做了一些修复，允许检查当前内容，请参见以下内容：

if (xmlDocument.SelectNodes(string.Concat("//", "Content", '/', "FullPath", "[text()='" + nodesToBeAdded[i] + "']")).Count == 0)
{
    nodeContent.AppendChild(nodeUID);
    nodeContent.AppendChild(nodeFileName);
    nodeContent.AppendChild(nodeImage);
    nodeContent.AppendChild(nodeFullPath);
}

static void Main（字符串[]args）
{
string filePath=“D:\\teste.xml”；
字符串fullPath=“1$2$3”；
List nodesToBeAdded=fullPath.Split（“$”）.ToList（）；
XmlDocument XmlDocument=新的XmlDocument（）；
加载（文件路径）；
对于（int item=1；item使用LINQ到XML）将更容易。^^^请参阅：
/// <remarks/>
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
[System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]
public partial class root
{

    private rootContent[] contentField;

    /// <remarks/>
    [System.Xml.Serialization.XmlElementAttribute("Content")]
    public rootContent[] Content
    {
        get
        {
            return this.contentField;
        }
        set
        {
            this.contentField = value;
        }
    }
}

/// <remarks/>
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
public partial class rootContent
{

    private byte uIdField;

    private string fileNameField;

    private string imageField;

    private byte[] fullPathField;

    /// <remarks/>
    public byte UId
    {
        get
        {
            return this.uIdField;
        }
        set
        {
            this.uIdField = value;
        }
    }

    /// <remarks/>
    public string FileName
    {
        get
        {
            return this.fileNameField;
        }
        set
        {
            this.fileNameField = value;
        }
    }

    /// <remarks/>
    public string Image
    {
        get
        {
            return this.imageField;
        }
        set
        {
            this.imageField = value;
        }
    }

    /// <remarks/>
    [System.Xml.Serialization.XmlElementAttribute("FullPath")]
    public byte[] FullPath
    {
        get
        {
            return this.fullPathField;
        }
        set
        {
            this.fullPathField = value;
        }
    }
}

   var r = new root();
   r.Content = new rootContent[2];
   r.Content[0] = new rootContent() { UId = 1, FileName = "file1.jpg" };
   r.Content[1] = new rootContent() { UId = 2, FileName = "file2.jpg" };


   var serializer = new System.Xml.Serialization.XmlSerializer(typeof(root));
   serializer.Serialize(File.Create(@"C:\temp\file.xml"), r);

string fullPath="1$2$3";
List<string> nodesToBeAdded = fullPath.Split('$').ToList();

XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(filePath);

XmlNode nodeContent = xmlDocument.CreateNode(XmlNodeType.Element, "Content", null);

XmlNode nodeUID = xmlDocument.CreateNode(XmlNodeType.Element, "UId", null);
nodeUID.InnerText = value.UId;

XmlNode nodeFileName = xmlDocument.CreateNode(XmlNodeType.Element, "FileName", null);
nodeFileName.InnerText = value.FileName;

XmlNode nodeImage = xmlDocument.CreateNode(XmlNodeType.Element, "Image", null);
nodeImage.InnerText = value.Image;

bool addNodeContent = false;
for (int i = 0; i < nodesToBeAdded.Count - 1; i++)
{
    XmlNode nodeFullPath = xmlDocument.CreateNode(XmlNodeType.Element, "FullPath", null);
    nodeFullPath.InnerText = nodesToBeAdded[i];

    if (xmlDocument.SelectNodes(string.Concat("//", "Content", '/', "FullPath", "[text()='" + nodesToBeAdded[i] + "']")).Count == 0)
    {
        nodeContent.AppendChild(nodeUID);
        nodeContent.AppendChild(nodeFileName);
        nodeContent.AppendChild(nodeImage);
        nodeContent.AppendChild(nodeFullPath);

        addNodeContent = true;
    }
}

if (addNodeContent)
{
   //add parent node to document
   xmlDocument.DocumentElement.AppendChild(nodeContent);
}

xmlDocument.Save(filePath);

if (xmlDocument.SelectNodes(string.Concat("//", "Content", '/', "FullPath", "[text()='" + nodesToBeAdded[i] + "']")).Count == 0)
{
    nodeContent.AppendChild(nodeUID);
    nodeContent.AppendChild(nodeFileName);
    nodeContent.AppendChild(nodeImage);
    nodeContent.AppendChild(nodeFullPath);
}

 static void Main(string[] args)
 {
        string filePath = "D:\\teste.xml";
        string fullPath = "1$2$3";
        List<string> nodesToBeAdded = fullPath.Split('$').ToList();

        XmlDocument xmlDocument = new XmlDocument();

        xmlDocument.Load(filePath);

        for (int item = 1; item <= 3; item++)
        {
            XmlNode nodeContent = xmlDocument.CreateNode(XmlNodeType.Element, "Content", null);

            XmlNode nodeUID = xmlDocument.CreateNode(XmlNodeType.Element, "UId", null);
            nodeUID.InnerText = item.ToString();//value.UId;

            XmlNode nodeFileName = xmlDocument.CreateNode(XmlNodeType.Element, "FileName", null);
            nodeFileName.InnerText = item + "-Calculator.txt";// value.FileName;

            XmlNode nodeImage = xmlDocument.CreateNode(XmlNodeType.Element, "Image", null);
            nodeImage.InnerText = item + "-Image.jpg";//value.Image;

            for (int i = 0; i < nodesToBeAdded.Count; i++)
            {
                XmlNode nodeFullPath = xmlDocument.CreateNode(XmlNodeType.Element, "FullPath", null);
                nodeFullPath.InnerText = nodesToBeAdded[i];

                if (nodeContent.SelectNodes(string.Concat("//", "Content", '/', "FullPath", "[text()='" + nodesToBeAdded[i] + "']")).Count == 0)
                {
                    nodeContent.AppendChild(nodeUID);
                    nodeContent.AppendChild(nodeFileName);
                    nodeContent.AppendChild(nodeImage);
                    nodeContent.AppendChild(nodeFullPath);
                }
            }//add parent node to document
            xmlDocument.DocumentElement.AppendChild(nodeContent);
        }
        xmlDocument.Save("D:\\teste.xml");
    }

"<?xml version="1.0" encoding="utf-8"?>
    <root>
      <Content>
        <FullPath>1</FullPath>
        <FullPath>2</FullPath>
        <UId>1</UId>
        <FileName>1-Calculator.txt</FileName>
        <Image>1-Image.jpg</Image>
        <FullPath>3</FullPath>
      </Content>
      <Content>
        <FullPath>1</FullPath>
        <FullPath>2</FullPath>
        <UId>2</UId>
        <FileName>2-Calculator.txt</FileName>
        <Image>2-Image.jpg</Image>
        <FullPath>3</FullPath>
      </Content>
      <Content>
        <FullPath>1</FullPath>
        <FullPath>2</FullPath>
        <UId>3</UId>
        <FileName>3-Calculator.txt</FileName>
        <Image>3-Image.jpg</Image>
        <FullPath>3</FullPath>
      </Content>
    </root>"