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Daily Archives: 2022年4月19日

C# XML序列化 去掉xmlns和xmlns属性

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                //准备序化列对象
                XmlSerializer xs = new XmlSerializer(obj.GetType());
                MemoryStream ms = new MemoryStream();
                //设置序序化XML格式
                XmlWriterSettings xws = new XmlWriterSettings();
                xws.Indent = true;
                xws.OmitXmlDeclaration = true;
                xws.Encoding = Encoding.UTF8;
                XmlWriter xtw = XmlTextWriter.Create(ms, xws);
                //去掉要结点的 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" 属性
                XmlSerializerNamespaces _namespaces = new XmlSerializerNamespaces(
                    new XmlQualifiedName[] {
                        new XmlQualifiedName(string.Empty, "aa")  
                 });
                xs.Serialize(xtw, obj,_namespaces);
                ms.Position = 0;
                xmlDoc = new XmlDocument();
                xmlDoc.Load(ms);
                //给文档添加<?xml version="1.0" encoding="utf-8"?>
                XmlDeclaration xmlDecl = xmlDoc.CreateXmlDeclaration("1.0", "utf-8", null);
                xmlDoc.InsertBefore(xmlDecl, xmlDoc.DocumentElement);

  from:https://blog.csdn.net/a5251199/article/details/106546967

龙生   19 Apr 2022
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C# object to xml

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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Serialization;
 
namespace object2xml
{
    public static class XmlExtension
    {
        public static string Serialize<T>(this T value)
        {
            if (value == null) return string.Empty;
 
            var xmlserializer = new XmlSerializer(typeof(T));
 
            using (StringWriter stringWriter = new StringWriter())
            {
                using (var writer = XmlWriter.Create(stringWriter, new XmlWriterSettings { Indent = true }))
                {
                    xmlserializer.Serialize(writer, value);
                    return stringWriter.ToString();
                }
            }
        }
    }
}

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace object2xml
{
    public class Persion
    {
        public string Name { get; set;
        public int Age { get; set; }
    }
}

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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Serialization;
 
namespace object2xml
{
    class Program
    {
        static void Main(string[] args)
        {
            Persion p = new Persion();
            p.Name = "张三";
            p.Age = 18;
            var xml = p.Serialize<Persion>();
            Console.WriteLine(xml);
        }
    }
}

  from:https://blog.csdn.net/justgono/article/details/45887619

龙生   19 Apr 2022
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C# XML序列号 去除命名空间和xml头

去除命名空间：

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//Create our own namespaces for the output
XmlSerializerNamespaces ns = new XmlSerializerNamespaces ();
//Add an empty namespace and empty value
ns.Add ("", "");
//Create the serializer
XmlSerializer slz = new XmlSerializer (someType);
//Serialize the object with our own namespaces (notice the overload)
slz.Serialize (myXmlTextWriter, someObject, ns);

  此外，在评论中还提到了去除开头的<?xml version="1.0" encoding="utf-8"?>的方法：

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XmlWriterSettings settings = new XmlWriterSettings ();
// Remove the <?xml version="1.0" encoding="utf-8"?>
settings.OmitXmlDeclaration = true;
XmlWriter writer = XmlWriter.Create ("output_file_name.xml", settings);

  另外，如果出现开头没有encoding="utf-8"时，应该使用：

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XmlWriterSettings settings = new XmlWriterSettings ();
settings.Encoding = Encoding.UTF8;
XmlWriter writer = XmlWriter.Create ("output_file_name.xml", settings);

  参考文献： 1.在XML序列化时去除默认命名空间xmlns:xsd和xmlns:xsi from:https://www.swack.cn/wiki/001559619644599d7563755fc544a19aebbb4eaf0dcb274000/0015889968933656748bbc3214e4f04a714c163b9227520000

龙生   19 Apr 2022
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