C#实体类生成XML与XML Schema文档

一、实体类生成XML

private void CreateXML()
        {
            Type[] objType = DBEntityRegst();
            foreach (var item in objType)
            {
                if (item == null)
                {
                    break;
                }

                XmlDocument doc = new XmlDocument();

                //<?xml version="1.0"?>
                XmlDeclaration dec = doc.CreateXmlDeclaration("1.0", "", "");
                doc.AppendChild(dec);

                //创建一个根节点
                //<schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
                XmlElement root = doc.CreateElement("schema");
                root.SetAttribute("xmlns:xs", "http://www.w3.org/2001/XMLSchema");
                doc.AppendChild(root);

                //<element Name="DTO_BatchTotal">
                XmlElement element1 = doc.CreateElement("element");
                element1.SetAttribute("Name", (item.Name).ToString());

                //<complexType>
                XmlElement element2 = doc.CreateElement("complexType");

                //<sequence>
                XmlElement element3 = doc.CreateElement("sequence");


                System.Reflection.PropertyInfo[] ps = item.GetProperties();
                for (int i = 0; i < ps.Length; i++)
                {
                    string typeold = (ps[i].PropertyType).ToString();
                    string[] a = typeold.Split('.');
                    string typenew = ("xs:" + a[1]).ToLower();

                    //<element Name="batch" Type="xs:string" />
                    //<element Name="total" Type="xs:decimal" />
                    XmlElement element4 = doc.CreateElement("element");
                    element4.SetAttribute("Name", ps[i].Name);
                    element4.SetAttribute("Type", typenew);

                    //给element3添加子节点
                    element3.AppendChild(element4);
                }
                //同上
                element1.AppendChild(element2);
                element2.AppendChild(element3);
                root.AppendChild(element1);

                XmlSerializerNamespaces xsn = new XmlSerializerNamespaces();
                xsn.Add("xs", "http://www.w3.org/2001/XMLSchema");
                doc.Save(@"E:XML" + item.Name.ToString() + ".xml");


            }
        }

        /// <summary>
        /// 将DTO实体加载到List列表
        /// </summary>
        private Type[] DBEntityRegst()
        {

            List<IEntityRegstHelper> entityRegstHelperlist = null;
            entityRegstHelperlist = new List<IEntityRegstHelper>();
            var classes = Assembly.Load("ZxSoftERPGC.Model").GetTypes();//命名空间[Model]下的类类型集

            Type[] a = new Type[classes.Length];
            int i = 0;
            foreach (var classtype in classes)
            {

                if (((classtype.Name).ToString()).Contains("DTO_")) //指定获取类名包含“DTO_”的类
                {
                    a[i] = classtype;
                    i++;
                }
            }
            return a;
        }

结果如：

<?xml version="1.0"?>
<schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <element Name="DTO_BatchTotal">
    <complexType>
      <sequence>
        <element Name="batch" Type="xs:string" />
        <element Name="total" Type="xs:decimal" />
      </sequence>
    </complexType>
  </element>
</schema>

参考：http://www.cnblogs.com/xwdreamer/archive/2011/04/27/2297023.html

二、生成XML Schema

 private void button1_Click(object sender, EventArgs e)
        {
            Type[] objType = DBEntityRegst();
            foreach (var item in objType)
            {
                if (item == null)
                {
                    break;
                }

                XmlSchema schema = new XmlSchema();

                // <xs:element name="">
                XmlSchemaElement elementPets = new XmlSchemaElement();
                schema.Items.Add(elementPets);
                elementPets.Name = (item.Name).ToString();

                // <xs:complexType>
                XmlSchemaComplexType complexType = new XmlSchemaComplexType();
                elementPets.SchemaType = complexType;

                //<xs:sequence>
                XmlSchemaSequence seqauth = new XmlSchemaSequence();
                complexType.Particle = seqauth;

                System.Reflection.PropertyInfo[] ps = item.GetProperties();
                for (int i = 0; i < ps.Length; i++)
                {
                    // <xs:element name=""/>
                    XmlSchemaElement catRef = new XmlSchemaElement();
                    seqauth.Items.Add(catRef);
                    catRef.Name = ps[i].Name;
                    string typeold = (ps[i].PropertyType).ToString();
                    string[] a = typeold.Split('.');
                    string typenew = (a[1]).ToLower();
                    //类型格式转换
                    if (typenew == "int32" || typenew == "int64")
                    {
                        typenew = "integer";
                    }
                    if (typenew == "datetime")
                    {
                        typenew = "date";
                    }
                    catRef.SchemaTypeName = new XmlQualifiedName(typenew, "http://www.w3.org/2001/XMLSchema");
                }

                XmlSchemaSet schemaSet = new XmlSchemaSet();
                schemaSet.Add(schema);
                schemaSet.Compile();

                XmlSchema compiledSchema = null;

                foreach (XmlSchema schema1 in schemaSet.Schemas())
                {
                    compiledSchema = schema1;
                }
                XmlNamespaceManager nsmgr = new XmlNamespaceManager(new NameTable());
                nsmgr.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema");

                //用流的形式输出保存
                using (MemoryStream stream = new MemoryStream())
                {
                    compiledSchema.Write(stream, nsmgr);
                    FileStream fs = new FileStream(@"E:XML" + item.Name.ToString() + ".xml", FileMode.Create);
                    BinaryWriter w = new BinaryWriter(fs);
                    w.Write(stream.ToArray());
                    fs.Close();
                    stream.Close();
                }


            }
        }

结果如：

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="DTO_BatchTotal">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="batch" type="xs:string" />
        <xs:element name="total" type="xs:decimal" />
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>

参考：https://msdn.microsoft.com/en-us/library/system.xml.schema.xmlschema(v=vs.110).aspx

2种生成都是用实体集批量生成，单个实体就不用演示了吧。