System.Xml.Tests.TC_SchemaSet_Misc.TFS_470020 C# (CSharp) Method

        public void TFS_470020()
        {
            Initialize();
            string xml = @"<?xml version='1.0' encoding='utf-8' ?>
            <e3>
            <e2>1</e2>
            <e2>1</e2>
            </e3>";

            string xsd = @"<xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema' elementFormDefault='qualified'>
              <xs:element name='e1' type='xs:int'/>
              <xs:element name='e2' type='xs:int' substitutionGroup='e1'/>
              <xs:complexType name='t3'>
                <xs:sequence>
                  <xs:element ref='e1' minOccurs='0' maxOccurs='1'/>
                  <xs:element name='e2' type='xs:int' minOccurs='0' maxOccurs='1'/>
                </xs:sequence>
              </xs:complexType>
              <xs:element name='e3' type='t3'/>
            </xs:schema>";

            XmlSchemaSet set = new XmlSchemaSet();
            set.XmlResolver = new XmlUrlResolver();
            set.Add(null, XmlReader.Create(new StringReader(xsd)));
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(xml);
            doc.Schemas = set;
            doc.Validate(ValidationCallback);
            CError.Compare(warningCount, 0, "Warning Count mismatch!");
            CError.Compare(errorCount, 1, "Error Count mismatch!");
            return;
        }
    }