Question

我希望将一个类序列化为XML。它有效，但字符串属性＆＃34; origen＆＃34;总是被串行化为字符串，也是空的。我希望序列化程序避免在它为空时将其包含在XML中

该类是FirmaElement，例如：

FirmaElement firma= new FirmaElement();
firma.Value="HITHERE";
firma.origen=String.Empty;

预期结果

string x= Serialize(FirmaElement);
x="<Firma>HITHERE</Firma>";

FirmaElement firma= new FIrmaElement();
firma.Value="HITHERE";
firma.origen="OK";

预期结果

string x= Serialize(FirmaElement);
x="<Firma origen='ok'>HITHERE</Firma>";

代码

 [System.Xml.Serialization.XmlTypeAttribute(Namespace = "http://gen/ces/headers/CesHeader")]
[System.Xml.Serialization.XmlRoot("Firma")]
public class FirmaElement
{
    public FirmaElement() { }
    string _origen = String.Empty;
    string _value = String.Empty;


    [System.Xml.Serialization.XmlAttributeAttribute()]
    public string origen
    {
        get { return _origen; }
        set { _origen = value; }
    }

    [System.Xml.Serialization.XmlTextAttribute()]
    public string Value
    {
        get { return _value; }
        set { _value = value; }
    }


    public override string ToString()
    {
        return this.Value;
    }


    //IS THIS CORRECT? SHould i override something??
    public  string Serialize()
    {
        XmlAttributeOverrides xOver = new XmlAttributeOverrides();
        XmlAttributes attrs = new XmlAttributes();

        /* Setting XmlIgnore to false overrides the XmlIgnoreAttribute
           applied to the Comment field. Thus it will be serialized.*/
        attrs.XmlIgnore = String.IsNullOrEmpty(origen);
        xOver.Add(typeof(string), "origen", attrs);

         I DONT KNOW WHAT TO PUT HERE, IT'S CORRECT??

        //XmlSerializer xSer = new XmlSerializer(typeof(XmlTypeAttribute), xOver);
    }



}

Answer 1

您可以使用名为ShouldSerialize{PropertyName}的方法指定是否应该序列化特定属性。检查this answer。

Answer 2

您应该将名为origenSpecified的属性添加到FirmaElement类中。

    [XmlIgnore]
    public bool origenSpecified
    {
        get
        {
            return !(string.IsNullOrEmpty(origen));
        }
    }

如果为空，则XmlSerialization忽略字符串属性

2 个答案: