使用c#语言进行xml文件的读取和实例化的常用方式

1、使用XmlDocument读取xml文件

XmlDocument doc = new XmlDocument();
xml.Load("D:\\Atlas\\123.xml");

//CustomerInfo是自己定义的实体
List<CustomerInfo> lists = new List<CustomerInfo>();
XmlNodeList list = doc.SelectNodes("/Table/row");
 
foreach (XmlNode item in list)
{
    CustomerInfo cust = new CustomerInfo();
    cust.Version = item.Attributes["Version"].Value;
    cust.AppId = item.Attributes["AppId"].Value;
    cust.CustomerID = item["CustomerID"].InnerText;
    cust.CompanyName = item["CompanyName"].InnerText;
    cust.ContactName = item["ContactName"].InnerText;
    lists.Add(cust);
}

2、使用XmlDocument创建xml文件

//使用XmlDocument创建xml
XmlDocument xmldoc = new XmlDocument();
XmlDeclaration xmldec = xmldoc.CreateXmlDeclaration("1.0", "utf-8", "yes");
xmldoc.AppendChild(xmldec);
                    
//添加根节点
XmlElement rootElement = xmldoc.CreateElement("StandardItem");
rootElement.SetAttribute("Name", model.name);
xmldoc.AppendChild(rootElement);

//添加根节点下的子节点元素
XmlElement classElement = xmldoc.CreateElement("ItemGroup");
rootElement.AppendChild(classElement);

//这里递归添加节点
XmlElement childElement = xmldoc.CreateElement("StandardItem");
childElement.SetAttribute("Name", model.name);
XmlElement groupElement = xmldoc.CreateElement("ItemGroup");
childElement.AppendChild(groupElement);
classElement.AppendChild(childElement);

//保存文件
xmldoc.Save("D:\\Atlas\\abc.xml");

3、使用XmlSerializer将XML转换成实体对象

/// <summary>
/// 将XML转换成实体对象
/// </summary>
/// <typeparam name="T">实体类型</typeparam>
/// <param name="strXML">XML</param>
public static T DESerializer<T>(string strXML) where T : class
{
    try
    {
        using (StringReader sr = new StringReader(strXML))
        {
            XmlSerializer serializer = new XmlSerializer(typeof(T));
            return serializer.Deserialize(sr) as T;
        }
    }
    catch (Exception ex)
    {
        throw new Exception("将XML转换成实体对象异常", ex);
    }
}

ConfigModel config = XmlSerializeHelper.DESerializer<ConfigModel>(FileOperationHelper.ReadStringFromFile("D:\\Config.xml", FileMode.Open));

4、使用XmlSerializer将实体对象转换成XML

/// <summary>
/// 将实体对象转换成XML
/// </summary>
/// <typeparam name="T">实体类型</typeparam>
/// <param name="obj">实体对象</param>
public static string XmlSerialize<T>(T obj)
{
    try
    {
        using (StringWriter sw = new StringWriter())
        {
            Type t = obj.GetType();
            XmlSerializer serializer = new XmlSerializer(obj.GetType());
            serializer.Serialize(sw, obj);
            sw.Close();
            return sw.ToString();
        }
    }
    catch (Exception ex)
    {
        throw new Exception("将实体对象转换成XML异常", ex);
    }
}

        将字符串写入到文件的方法。

/// <summary>
        /// 将字符串写入到文件
        /// </summary>
        /// <param name="strXML">字符串</param>
        /// <param name="filePath">文件路径</param>
        /// <param name="mode">文件操作模式</param>
        /// <returns></returns>
        public static bool WriteStringToFile(string strXML, string filePath, FileMode mode)
        {
            try
            {
                if (File.Exists(filePath))
                {
                    File.Delete(filePath);
                }
                FileStream fs = new FileStream(filePath, mode);
                byte[] data = System.Text.Encoding.UTF8.GetBytes(strXML);
                //开始写入
                fs.Write(data, 0, data.Length);
                //清空缓冲区、关闭流
                fs.Flush();
                fs.Close();

                return true;
            }
            catch (Exception ex)
            {
                throw new Exception("文件写入失败", ex);
            }
        }

        将model序列化为xml字符串，并写入xml文件。

string stageModelXml = XmlSerializeHelper.XmlSerialize<LabelStyleModel>(newModel);
string filePath = "D:\\stage.xml";
FileOperationHelper.WriteStringToFile(stageModelXml, filePath, FileMode.Create);