private static void InitField(XsdBuilder builder, string value)
{
builder._xso = builder._xpath = new XmlSchemaXPath();
// no selector before fields?
if (builder._identityConstraint.Selector == null)
{
builder.SendValidationEvent(SR.Sch_SelectorBeforeFields, builder._identityConstraint.Name);
}
builder._identityConstraint.Fields.Add(builder._xpath);
}