public static CamlOrderBy Combine(CamlOrderBy firstOrderBy, CamlOrderBy secondOrderBy)
{
CamlOrderBy orderBy = null;
var fieldRefs = new List<CamlFieldRef>();
if (firstOrderBy?.FieldRefs != null)
{
fieldRefs.AddRange(firstOrderBy.FieldRefs);
}
if (secondOrderBy?.FieldRefs != null)
{
fieldRefs.AddRange(secondOrderBy.FieldRefs);
}
if (fieldRefs.Count > 0)
{
orderBy = new CamlOrderBy(fieldRefs);
}
return orderBy;
}
public static CamlOrderBy ThenBy(this CamlOrderBy orderBy, CamlFieldRef fieldRef)
{
if (orderBy == null)
{
orderBy = new CamlOrderBy(fieldRef);
}
var fields = new List<CamlFieldRef>(orderBy.FieldRefs) { fieldRef };
return new CamlOrderBy(fields);
}
