public override bool Equals(Object obj)
{
//Check for null and compare run-time types.
if (obj == null || GetType() != obj.GetType()) return false;
if (obj is ContentTag) {
ContentTag p = (ContentTag)obj;
return (this.SiteID == p.SiteID && this.ContentTagID == p.ContentTagID);
} else {
return false;
}
}