發布服務元數據的方式有兩種：一是基於HTTP-GET協議提供元數據，它是一種絕大多數平臺都能支持的簡單text-based協議；另一種是元數據交換終結點。

1.基於HTTP-GET協議

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.serviceModel>
    <services>
      <service name="HelloWCFService.HelloWCFService" behaviorConfiguration="metaExchange">
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8000/MyService"/>
          </baseAddresses>
        </host>
        <endpoint address="HelloWCFService" binding="wsHttpBinding" contract="HelloWCFService.IHelloWCFService"/>
        <!--<endpoint address="metaExchange" binding="mexHttpBinding" contract="IMetadataExchange"/>-->
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="metaExchange">
          <serviceMetadata httpGetEnabled="true"/>
 

          <!--<serviceMetadata/>-->
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>

2.元數據交換終結點

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.serviceModel>
    <services>
      <service name="HelloWCFService.HelloWCFService" behaviorConfiguration="metaExchange">
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8000/MyService"/>
          </baseAddresses>
        </host>
        <endpoint address="HelloWCFService" binding="wsHttpBinding" contract="HelloWCFService.IHelloWCFService"/>
        <endpoint address="metaExchange" binding="mexHttpBinding" contract="IMetadataExchange"/>
 

      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="metaExchange">
          <!--<serviceMetadata httpGetEnabled="true"/>-->
          <serviceMetadata/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>

C# WCF發布服務的元數據的方式