在 C# XML 中生成选择节点

Question

我有以下 Employee 类。我需要从此类生成一个 xml，这样只允许使用 One 属性。要么是薪水1，要么是薪水2。

如果从数据库获取的salary1大于Salary2，生成的XML应该只包含salary1 XMLElement，而salary2 XML Elment应该在生成的XML中不存在

现在我在生成的 XML 中获得了这两个元素。

如果从数据库获取的salary2大于Salary1，则生成的XML应仅包含salary2 XMLElement，而生成的XML中不应包含salary1 XML Elment。

我尝试过使用选择标识符，但我无法理解它。

公开课节目 {

    public class Employee 
    {

        public int Salary1 { get; set; }
        public int Salary2 { get; set; }

    }

       public static class Database
        {
            public static int Salary1 = 100;
            public static int Salary2= 50;
        }

    public static void Main(string[] args)
    {

        XmlSerializer xsSubmit = new XmlSerializer(typeof(Employee));

        Employee subReq;
        if (Database.Salary1 > Database.Salary2)
        {
            subReq = new Employee { Salary1 = Database.Salary1 };
        }
        else
        {
            subReq = new Employee { Salary2 = Database.Salary2 };
        }
        var xml = "";

        using (var sww = new StringWriter())
        {
            using (XmlWriter writer = XmlWriter.Create(sww))
            {
                xsSubmit.Serialize(writer, subReq);
                xml = sww.ToString(); // Your XML
            }
        }

        Console.WriteLine(xml);
        Console.ReadLine();

    }
}

}

Answer 1

试试这个：

public class Employee
{
    private int salary;

    [XmlIgnore]
    public int Salary1 { get; set; }

    [XmlIgnore]
    public int Salary2 { get; set; }

    [XmlAttribute(AttributeName = "Salary")]
    public int SalaryToSerialize
    {
        get
        {
            salary = Math.Max(this.Salary1, this.Salary2);
            return salary;
        }
        set
        {
            salary = value;
        }    
    }
}

并按原样序列化对象。

希望对您有帮助。

Answer 2

谢谢大家的回答和指导。但在我的场景中，由于某些原因，我无法拥有像工资这样的单一属性。将数据类型从 Int 更改为 String 解决了问题

public static class Program
{

  public class Employee
  {
     public string Salary1 { get; set; }
     public string Salary2 { get; set; }
  }

  public static class Database
  {
     public static int? Salary1 = 100;
     public static int? Salary2 = 50;
  }

  public static void Main(string[] args)
  {
     XmlSerializer xsSubmit = new XmlSerializer(typeof(Employee));
     Employee subReq;
     if (Database.Salary1 > Database.Salary2)
     {
        subReq = new Employee{ Salary1=Database.Salary1.ToString()};
     }
     else
     {
        subReq = new Employee{ Salary2=Database.Salary2.ToString()};
     }
     var xml = "";

     using (var sww = new StringWriter())
     {
        using (XmlWriter writer = XmlWriter.Create(sww))
        {
            xsSubmit.Serialize(writer, subReq);
            xml = sww.ToString(); // Your XML
        }
     }
     Console.WriteLine(xml);
     Console.ReadLine();
  }
}