How to exclude null properties when using XmlSerializer

Question

I\'m serializing a class like this

public MyClass
{
    public int? a { get; set; }
    public int? b { get; set; }
    public int? c { get; set; }
}
         


        

Answer 1

You ignore specific elements with specification

public MyClass
{
    public int? a { get; set; }

    [System.Xml.Serialization.XmlIgnore]
    public bool aSpecified { get { return this.a != null; } }

    public int? b { get; set; }
    [System.Xml.Serialization.XmlIgnore]
    public bool bSpecified { get { return this.b != null; } }

    public int? c { get; set; }
    [System.Xml.Serialization.XmlIgnore]
    public bool cSpecified { get { return this.c != null; } }
}

The {field}Specified properties will tell the serializer if it should serialize the corresponding fields or not by returning true/false.