<configuration>

  <configSections>

  <!--.自定义一个节 CustomSection -->

 <section name="CustomSection"

        type="CustomSection.BatchingHostingSettings,

              CustomSection"/>

 <!--.为CustomSection 这个节配置子节点-->

  <CustomSection>

    <add type="CustomSection.FooService, CustomSection"/>

    <add type="CustomSection.BarService, CustomSection"/>

    <add type="CustomSection.BazService, CustomSection"/>

  </CustomSection>

</configuration>

.定义转换器

   public class AssemblyQualifiedTypeNameConverter : ConfigurationConverterBase

    {

        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)

        {

            string typeName = (string)value;

            if (string.IsNullOrEmpty(typeName))

            {

                return null;

            }

            Type result = Type.GetType(typeName, false);

            if (result == null)

            {

                throw new ArgumentException(string.Format("不能加载类型\"{0}\"", typeName));

            }

            return result;

        }

        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)

        {

            Type type = value as Type;

            if (null == type)

            {

                throw new ArgumentNullException("value");

            }

            return type.AssemblyQualifiedName;

        }

    }

.配置元素集合的元素类型的配置

 public class ServiceTypeElement : ConfigurationElement

    {

        [ConfigurationProperty("type", IsRequired = true)]

        [TypeConverter(typeof(AssemblyQualifiedTypeNameConverter))]

        public Type ServiceType

        {

            get { return (Type)this["type"]; }

            set { this["type"] = value; }

        }

    }

.定义配置元素集合

    public class ServiceTypeElementCollection : ConfigurationElementCollection

    {

        protected override ConfigurationElement CreateNewElement()

        {

            return new ServiceTypeElement();

        }

        protected override object GetElementKey(ConfigurationElement element)

        {

            ServiceTypeElement serviceTypeElement = (ServiceTypeElement)element;

            return serviceTypeElement.ServiceType.MetadataToken;

        }

    }

.自定义节对应的类的定义

 public class BatchingHostingSettings : ConfigurationSection

    {

        [ConfigurationProperty("", IsDefaultCollection = true)]

        public ServiceTypeElementCollection ServiceTypes

        {

            get { return (ServiceTypeElementCollection)this[""]; }

        }

        public static BatchingHostingSettings GetSection()

        {

            return ConfigurationManager.GetSection("CustomSection")

                        as BatchingHostingSettings;

        }

    }

. 对应要解析的类

 public class FooService

    {

    }

    public class BarService

    {

    }

    public class BazService

    {

    }

.ServiceHostCollection

 public class ServiceHostCollection : Collection<ServiceHost>, IDisposable

    {

        public ServiceHostCollection(params Type[] serviceTypes)

        {

            BatchingHostingSettings settings = BatchingHostingSettings.GetSection();

            foreach (ServiceTypeElement element in settings.ServiceTypes)

            {

                this.Add(element.ServiceType);

            }

            if (null != serviceTypes)

            {

                Array.ForEach<Type>(serviceTypes, serviceType => this.Add(new ServiceHost(serviceType)));

            }

        }

        public void Add(params Type[] serviceTypes)

        {

            if (null != serviceTypes)

            {

                Array.ForEach<Type>(serviceTypes, serviceType => this.Add(new ServiceHost(serviceType)));

            }

        }

        public void Open()

        {

            foreach (ServiceHost host in this)

            {

                host.Open();

            }

        }

        public void Dispose()

        {

            foreach (IDisposable host in this)

            {

                host.Dispose();

            }

        }

    }

.演示一个服务寄宿的例子

 protected void Page_Load(object sender, EventArgs e)

        {

            ServiceHostCollection list = new ServiceHostCollection();

            foreach (ServiceHost host in list)

            {

                host.Opened += (sender1, arg1) =>

                {

                 System.Diagnostics.Debug.WriteLine("服务{0}开始监听",

               (sender1 as ServiceHost).Description.ServiceType);

                };

            }

            list.Open();

            Console.Read();

        }