Set XmlSerialize to ignore fields in their default value

[eggie5]

I have the below campaign class. It is serialized to xml in my code. However, I do not want it to serialize the field if it's set to it's default value. In my case, 0 and 2001-01-01T00:00:00-08:00 for int's and datetime's respectively. How can I have the XmlSerializer ignore them? Is there a global setting for the XmlSerializer class or attributes I can set for each field?

public class campaign : RESTResource
{
    public override String get\_endpoint\_url()
    {
        return campaign.endpoint\_url;
    }

    public static string endpoint\_url = "/campaigns/";

    public int id; //if 0; don't serialize
    public string name;
    public int category\_id; if 0; don't serialize
    public string subject; 
    public string body; 
    public string thumbnail; 
    public string notes; 
    public int ad\_id\_source; //If 0; don't serialize
    public int campaign\_status\_id; //If 0; don't serialize
    public DateTime valid\_after; //if 2001-01-01T00:00:00-08:00, don't serialize
    public int billing\_code; //If 0; don't serialize
    public DateTime created\_at; //if 2001-01-01T00:00:00-08:00, don't serialize
    public DateTime updated\_at; //if 2001-01-01T00:00:00-08:00, don't serialize
}

/\ |_ E X E GG

[Lost User]

[XmlIgnore]

[eggie5]

Doesn't XmlIgnore completely ignore the field without any exception?

/\ |_ E X E GG