System.Xml.Schema.SchemaCollectionPreprocessor.ValidateIdAttribute C# (CSharp) Method

        private void ValidateIdAttribute(XmlSchemaObject xso) {
            if (xso.IdAttribute != null) {
                try {
                    xso.IdAttribute = NameTable.Add(XmlConvert.VerifyNCName(xso.IdAttribute));
                    if (this.schema.Ids[xso.IdAttribute] != null) {
                        SendValidationEvent(Res.Sch_DupIdAttribute, xso);
                    }
                    else {
                        this.schema.Ids.Add(xso.IdAttribute, xso);
                    }
                } 
                catch (Exception ex){
                    SendValidationEvent(Res.Sch_InvalidIdAttribute, ex.Message, xso);
                }
            }
        }