可是出现下列错误：HTTP/1.1 415 Cannot process the message because the content type 'application/soap+msbin1' was not the expected type 'application/soap+xml; charset=utf-8'.服务器端的终结点的绑定和客户端的终结点的绑定不一致导致的，我服务端发布的WCF服务的终结点的binding是wsHTTPBinding,而SL客户端代理类调用时配置的Binding是custombinding，确实是不一致的，但好像SL3.0客户端配置里不支持wsHTTPBinding，好像只支持customBinding和basicHttpBinding，于是我把服务端和客户端的binding都改成了basicHttpBinding,然后重新发布服务端，更新客户端服务引用，运行SL程序，调用WCF服务，成功了