static void Demo6()
        {
            // load the xsd
            XmlSchema xsd = null;

            using (FileStream stream = new FileStream("..\\..\\Test.xsd", FileMode.Open, FileAccess.Read))
            {
                xsd = XmlSchema.Read(stream, null);
            }

            XmlSchemas xsds = new XmlSchemas();

            xsds.Add(xsd);
            xsds.Compile(null, true);
            XmlSchemaImporter xsdImporter = new XmlSchemaImporter(xsds);

            // create the codedom
            CodeNamespace   ns  = new CodeNamespace();
            CodeCompileUnit ccu = new CodeCompileUnit();

            ccu.ReferencedAssemblies.Add(typeof(XmlTypeAttribute).Assembly.GetName().ToString());
            ccu.Namespaces.Add(ns);
            XmlCodeExporter codeExporter = new XmlCodeExporter(ns, ccu);

            var maps = new List <XmlTypeMapping>();

            foreach (XmlSchemaType schemaType in xsd.SchemaTypes.Values)
            {
                maps.Add(xsdImporter.ImportSchemaType(schemaType.QualifiedName));
            }
            foreach (XmlSchemaElement schemaElement in xsd.Elements.Values)
            {
                maps.Add(xsdImporter.ImportTypeMapping(schemaElement.QualifiedName));
            }
            foreach (XmlTypeMapping map in maps)
            {
                codeExporter.ExportTypeMapping(map);
            }
            var typeMap = new Dictionary <string, CodeTypeDeclaration>(StringComparer.InvariantCulture);

            _FillTypeMap(ns, typeMap);
            foreach (var kvp in typeMap)
            {
                var td       = kvp.Value;
                var propElem = new HashSet <string>(StringComparer.InvariantCulture);
                var propAttr = new HashSet <string>(StringComparer.InvariantCulture);
                var fldMap   = new Dictionary <string, string>();
                _FillPropFldMaps(td, propElem, propAttr, fldMap);
                // fix up our xml type attribute
                foreach (CodeAttributeDeclaration d in td.CustomAttributes)
                {
                    if (0 == string.Compare(d.AttributeType.BaseType, "System.Xml.Serialization.XmlAttributeAttribute", StringComparison.InvariantCulture))
                    {
                        d.Arguments.Insert(0, new CodeAttributeArgument("TypeName", new CodePrimitiveExpression(td.Name)));
                        break;
                    }
                }
                // correct the type name
                td.Name = _ToNetCase(td.Name);
                CodeDomVisitor.Visit(td, (ctx) =>
                {
                    var fldRef = ctx.Target as CodeFieldReferenceExpression;
                    if (null != fldRef && fldMap.ContainsKey(fldRef.FieldName))
                    {
                        fldRef.FieldName = _ToPrivFldName(fldRef.FieldName);
                        return;
                    }
                    var fld = ctx.Target as CodeMemberField;
                    if (null != fld && fldMap.ContainsKey(fld.Name))
                    {
                        fld.Name = _ToPrivFldName(fld.Name);
                        var ctr  = fld.Type;
                        if (0 < ctr.ArrayRank)
                        {
                            ctr = ctr.ArrayElementType;
                        }
                        if (!CodeDomResolver.IsPrimitiveType(ctr))
                        {
                            ctr.BaseType = _ToNetCase(ctr.BaseType);
                        }
                    }
                    var prop = ctx.Target as CodeMemberProperty;
                    if (null != prop && (propElem.Contains(prop.Name) || propAttr.Contains(prop.Name)))
                    {
                        var n   = prop.Name;
                        var ctr = prop.Type;
                        if (0 < ctr.ArrayRank)
                        {
                            ctr = ctr.ArrayElementType;
                        }
                        if (!CodeDomResolver.IsPrimitiveType(ctr))
                        {
                            ctr.BaseType = _ToNetCase(ctr.BaseType);
                        }
                        prop.Name = _ToNetCase(n);
                        if (propElem.Contains(n))
                        {
                            foreach (CodeAttributeDeclaration a in prop.CustomAttributes)
                            {
                                if (0 == string.Compare("System.Xml.Serialization.XmlElementAttribute", a.AttributeType.BaseType, StringComparison.InvariantCulture))
                                {
                                    a.Arguments.Insert(0, new CodeAttributeArgument("ElementName", new CodePrimitiveExpression(n)));
                                    break;
                                }
                            }
                        }
                        else
                        {
                            foreach (CodeAttributeDeclaration a in prop.CustomAttributes)
                            {
                                if (0 == string.Compare("System.Xml.Serialization.XmlAttributeAttribute", a.AttributeType.BaseType, StringComparison.InvariantCulture))
                                {
                                    a.Arguments.Insert(0, new CodeAttributeArgument("AttributeName", new CodePrimitiveExpression(n)));
                                    break;
                                }
                            }
                        }
                    }
                });
            }

            // Check for invalid characters in identifiers
            CodeGenerator.ValidateIdentifiers(ns);

            // output the C# code
            Console.WriteLine(CodeDomUtility.ToString(ccu));
        }