删除innerXML后，如何删除C#中的空标记？
当用户在我的DataGrid中选择一行并单击“删除”时，我想从文档中删除节点 我的结果显示，只有内部XML已被删除，但标记仍保留在文档中 有什么想法吗 我也尝试过：删除innerXML后，如何删除C#中的空标记？,c#,xml,attributes,xmlnode,C#,Xml,Attributes,Xmlnode,当用户在我的DataGrid中选择一行并单击“删除”时，我想从文档中删除节点 我的结果显示，只有内部XML已被删除，但标记仍保留在文档中 有什么想法吗 我也尝试过： n.ParentNode.ChildNodes.Remove(n); 2019年9月4日下午2:21 C:\Users\contract\u lshamoon\Desktop\filedeleter\index-Copy.js C:\Users\contract\u lshamoon\Desktop\filedeleter js
n.ParentNode.ChildNodes.Remove(n);
2019年9月4日下午2:21
C:\Users\contract\u lshamoon\Desktop\filedeleter\index-Copy.js
C:\Users\contract\u lshamoon\Desktop\filedeleter
js
1.
删除：62个文件。
2019年9月4日下午2:21
C:\Users\contract\u lshamoon\Desktop\filedeleter\index.js
C:\Users\contract\u lshamoon\Desktop\filedeleter
js
1.
删除：55个文件。
n.ParentNode.RemoveChild（n）而不是n.RemoveAll（）
您不必在XmlNode中移动，而必须在XmlNodeList中移动。下面我在Rextester中测试了您的数据，您可以自己尝试：
//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Xml;
namespace Rextester
{
public class Program
{
public static void Main(string[] args)
{
String str = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\r\n" +
"<Jobs>\r\n" +
" <Job>\r\n" +
" </Job>\r\n" +
" <Job JobId=\"d7bf1b4e-a452-4417-aa72-2ba23c246fc3\">\r\n" +
" <JobDate>04/09/2019 2:21 PM</JobDate>\r\n" +
" <File>C:\\Users\\contract_lshamoon\\Desktop\\filedeleter\\index - Copy.js</File>\r\n" +
" <FilePath>C:\\Users\\contract_lshamoon\\Desktop\\filedeleter</FilePath>\r\n" +
" <Extension>js</Extension>\r\n" +
" <Age>1</Age>\r\n" +
" <JobComment>Deleted : 62 files.</JobComment>\r\n" +
" </Job>\r\n" +
" <Job JobId=\"997dd4cd-b29f-4de4-ad0f-4d4d72a5fe28\">\r\n" +
" <JobDate>04/09/2019 2:21 PM</JobDate>\r\n" +
" <File>C:\\Users\\contract_lshamoon\\Desktop\\filedeleter\\index.js</File>\r\n" +
" <FilePath>C:\\Users\\contract_lshamoon\\Desktop\\filedeleter</FilePath>\r\n" +
" <Extension>js</Extension>\r\n" +
" <Age>1</Age>\r\n" +
" <JobComment>Deleted : 55 files.</JobComment>\r\n" +
" </Job>\r\n" +
"</Jobs>";
XmlDocument doc = new XmlDocument();
doc.LoadXml(str);
XmlNodeList nodes = doc.SelectSingleNode("Jobs").SelectNodes("Job");
for (int i = nodes.Count - 1; i >= 0; i--)
{
if (nodes[i].Attributes["JobId"] == null) //this statement removes null tags
{
nodes[i].ParentNode.RemoveChild(nodes[i]);
} else if(nodes[i].Attributes["JobId"].Value == "d7bf1b4e-a452-4417-aa72-2ba23c246fc3") //this statement removes selected tag.
nodes[i].ParentNode.RemoveChild(nodes[i]);
}
Console.WriteLine(doc.OuterXml);
}
}
}
谢谢你们的回答。
这是对我有效的解决方案：
它通过从根中删除子节点来工作
private static void DeleteXmlNode(string path, string tagname, string searchVal)
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNodeList nodes = doc.GetElementsByTagName(tagname);
XmlNode root = doc.DocumentElement;
foreach (XmlNode n in root)
{
if (n.Attributes["Id"].Value == searchVal)
{
root.RemoveChild(n);
}
}
using (var tw = new StreamWriter(@"~../../../../Log/Log.txt".Trim(), true))
{
tw.WriteLine(DateTime.Now + "\t" + WinId + "\t DELETED Job ::: " + searchVal);
}
doc.Save(path);
}
这会起作用，但我需要从文件中读取XML，而不是字符串。在代码中，您只需更改相关部分。顺便说一句，我制作了一个版本来回答你的问题，这样你就可以直接使用它了。谢谢你的帮助！你的例子是可行的，但问题是：我没有像我说的那样从数组中读取文本。我正在从项目中的一个单独的xml文件中读取xml
<?xml version="1.0" encoding="utf-8"?>
<Jobs>
<Job>
</Job>
<Job JobId="d7bf1b4e-a452-4417-aa72-2ba23c246fc3">
<JobDate>04/09/2019 2:21 PM</JobDate>
<File>C:\Users\contract_lshamoon\Desktop\filedeleter\index - Copy.js</File>
<FilePath>C:\Users\contract_lshamoon\Desktop\filedeleter</FilePath>
<Extension>js</Extension>
<Age>1</Age>
<JobComment>Deleted : 62 files.</JobComment>
</Job>
<Job JobId="997dd4cd-b29f-4de4-ad0f-4d4d72a5fe28">
<JobDate>04/09/2019 2:21 PM</JobDate>
<File>C:\Users\contract_lshamoon\Desktop\filedeleter\index.js</File>
<FilePath>C:\Users\contract_lshamoon\Desktop\filedeleter</FilePath>
<Extension>js</Extension>
<Age>1</Age>
<JobComment>Deleted : 55 files.</JobComment>
</Job>
</Jobs>
//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Xml;
namespace Rextester
{
public class Program
{
public static void Main(string[] args)
{
String str = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\r\n" +
"<Jobs>\r\n" +
" <Job>\r\n" +
" </Job>\r\n" +
" <Job JobId=\"d7bf1b4e-a452-4417-aa72-2ba23c246fc3\">\r\n" +
" <JobDate>04/09/2019 2:21 PM</JobDate>\r\n" +
" <File>C:\\Users\\contract_lshamoon\\Desktop\\filedeleter\\index - Copy.js</File>\r\n" +
" <FilePath>C:\\Users\\contract_lshamoon\\Desktop\\filedeleter</FilePath>\r\n" +
" <Extension>js</Extension>\r\n" +
" <Age>1</Age>\r\n" +
" <JobComment>Deleted : 62 files.</JobComment>\r\n" +
" </Job>\r\n" +
" <Job JobId=\"997dd4cd-b29f-4de4-ad0f-4d4d72a5fe28\">\r\n" +
" <JobDate>04/09/2019 2:21 PM</JobDate>\r\n" +
" <File>C:\\Users\\contract_lshamoon\\Desktop\\filedeleter\\index.js</File>\r\n" +
" <FilePath>C:\\Users\\contract_lshamoon\\Desktop\\filedeleter</FilePath>\r\n" +
" <Extension>js</Extension>\r\n" +
" <Age>1</Age>\r\n" +
" <JobComment>Deleted : 55 files.</JobComment>\r\n" +
" </Job>\r\n" +
"</Jobs>";
XmlDocument doc = new XmlDocument();
doc.LoadXml(str);
XmlNodeList nodes = doc.SelectSingleNode("Jobs").SelectNodes("Job");
for (int i = nodes.Count - 1; i >= 0; i--)
{
if (nodes[i].Attributes["JobId"] == null) //this statement removes null tags
{
nodes[i].ParentNode.RemoveChild(nodes[i]);
} else if(nodes[i].Attributes["JobId"].Value == "d7bf1b4e-a452-4417-aa72-2ba23c246fc3") //this statement removes selected tag.
nodes[i].ParentNode.RemoveChild(nodes[i]);
}
Console.WriteLine(doc.OuterXml);
}
}
}
private static void DeleteXmlNode(string path, string tagname, string searchconditionAttributevalue)
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNodeList nodes = doc.GetElementsByTagName(tagname);
AddFileSecurity(path, FileSystemRights.ReadData, AccessControlType.Allow);
XmlNodeList nodes = doc.SelectSingleNode("Jobs").SelectNodes("Job");
for (int i = nodes.Count - 1; i >= 0; i--)
{
if (nodes[i].Attributes["JobId"] == null) //this statement removes null tags
{
nodes[i].ParentNode.RemoveChild(nodes[i]);
} else if(nodes[i].Attributes["JobId"].Value == searchconditionAttributevalue) //this statement removes selected tag.
nodes[i].ParentNode.RemoveChild(nodes[i]);
}
doc.Save(path);
}
private static void DeleteXmlNode(string path, string tagname, string searchVal)
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNodeList nodes = doc.GetElementsByTagName(tagname);
XmlNode root = doc.DocumentElement;
foreach (XmlNode n in root)
{
if (n.Attributes["Id"].Value == searchVal)
{
root.RemoveChild(n);
}
}
using (var tw = new StreamWriter(@"~../../../../Log/Log.txt".Trim(), true))
{
tw.WriteLine(DateTime.Now + "\t" + WinId + "\t DELETED Job ::: " + searchVal);
}
doc.Save(path);
}