在C/S三层架构中如何使用Remoting技术？
Remoting服务端配置文件
?xml   version= "1.0 "   encoding= "utf-8 "   ?>
<configuration>
    <configSections>
        <section   name= "DbConfig "   type= "DataAccess.ConfigurationHandler,   DataAccess "/>
    </configSections>
    <system.runtime.remoting>
        <application>
            <service>
              <wellknown  
                      mode= "Singleton "   type= "LIMIS_Login.UserLogin,LIMIS_Login "   objectUri= "UserLogin.Soap "   />    
            </service>
            <channels>
                <channel   ref= "tcp "   port= "8000 "/>
                <serverProviders>
                    <formatter   ref= "binary "   typeFilterLevel= "Low "   />
                </serverProviders>
            </channels>
            <lifetime   leaseTime= "5S "   sponsorShipTimeout= "1S "   renewOnCallTime= "2S "   leaseManagerPollTime= "2S "   />
        </application>
    </system.runtime.remoting>
    <DbConfig>
        <Class   name= "Data   Source "   value= "localhost "/>
        <Class   name= "Initial   Catalog "   value= "LIMIS "/>
        <Class   name= "Integrated   Security "   value= "True "/>
       
    </DbConfig>
</configuration>
客户端配置文件
<configuration>
    <configSections>
        <section   name= "system "   type= "Host.ConfigureHandler,   Host "/>
        <section   name= "Framework "   type= "Host.ConfigureHandler,   Host "/>
          </configSections>
    <system>
        <Server   location= "localhost "   port= "8000 "   />
    </system>
    <Framework>    
    <Class   name= "ILIMIS_Login "   location= "UserLogin.Soap "   type= "ILIMIS_Login.IUserLogin,ILIMIS_Login "/>  
    </Framework>
</configuration>

我在使用以下代码激活的时候不能获得相应接口的类型，请高手指点指点，小弟现在做毕业设计，急啊！这个问题不解决，就做不了了。
public   static   object   getInterface(string   IName)
                {
                        object   returnObj;
                        try