错误1 

错误描述：The remote server returned an error: NotFound

可能原因：WCF服务本身对数据包进行了限制，最大不能超过65535，Silverlight发送大数据包到服务器端(例如图片直接存于数据库)，   WCF返回以上错误。

传输时,最好用List<string> 代替 string做参数。

解决方法：

（1）修改Silverlight端ServiceReferences.ClientConfig文件，增加Buffer 尺寸。
  <bindings> 
      <basicHttpBinding> 
                <binding name="BasicHttpBinding_IDataService" 
                         maxBufferSize="2147483647" 
                         maxReceivedMessageSize="2147483647"> 
                    <security mode="None" /> 
                </binding> 
       </basicHttpBinding> 
</bindings>

         System.ServiceModel.BasicHttpBinding binding = new System.ServiceModel.BasicHttpBinding(System.ServiceModel.BasicHttpSecurityMode.None);
            binding.MaxReceivedMessageSize = int.MaxValue;
            binding.MaxBufferSize = int.MaxValue;
            binding.ReceiveTimeout = TimeSpan.FromMinutes(5);
            binding.SendTimeout = TimeSpan.FromMinutes(5);
            binding.CloseTimeout = TimeSpan.FromMinutes(5);
            binding.OpenTimeout = TimeSpan.FromMinutes(5);
            EndpointAddress ep = new EndpointAddress("../DataService.svc");
            MyTest.DataService.DataServiceClient client = new DataServiceClient(binding,ep);

（2）修改服务器端，在Web.config中添加自定义BasicHttpBinding对象，
 

　服务器端：web.config

<configuration>
  <appSettings>
    <add key="ReturnTablePath" value="C:\TestData\test_data.csv"/>
  </appSettings>
    <system.web>
      <httpRuntime maxRequestLength="2147483647"/>
      <compilation debug="true" targetFramework="4.0" />
    </system.web>

  <system.serviceModel>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
    <behaviors>
      <serviceBehaviors>
        <behavior name="MappingDataEditor.Web.DataServiceBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
          <dataContractSerializer maxItemsInObjectGraph="2147483647" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <service behaviorConfiguration="MappingDataEditor.Web.DataServiceBehavior" name="MappingDataEditor.Web.DataService">
        <!--name=命名空间(ExcelServer)+类名(Server1)-->
        <endpoint address="" bindingConfiguration="LargeBuffer" binding="basicHttpBinding" contract="MappingDataEditor.Web.IDataService"/>
        <!--contract=命名空间(ExcelServer)+接口(IServer1)-->
      </service>
    </services>
    <bindings>
      <basicHttpBinding>
        <binding name="LargeBuffer" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647">
          <!--name=随意命名-->
          <readerQuotas maxStringContentLength="2147483647" maxArrayLength="2147483647"/>
          <security mode="None"></security>
        </binding>
      </basicHttpBinding>
    </bindings>
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

错误2

Silverlight wcf 上传大数据

1.服务端：

 MaxRequestLength：  请求的最大大小（以千字节为单位）。默认大小为 4096 KB (4 MB)。

<system.web>
  <httpRuntime maxRequestLength="2147483647"/>
  <compilation debug="true" targetFramework="4.0" />
 </system.web>

<system.serviceModel>
        <bindings>
            <basicHttpBinding>
                <binding name="NewBinding2MB" maxReceivedMessageSize="2147483647"
                         maxBufferSize="2147483647"  maxBufferPoolSize="2147483647"
                         closeTimeout="10:00:00" openTimeout="10:00:00" receiveTimeout="10:00:00"
                         sendTimeout="10:00:00" >
                    <readerQuotas maxArrayLength="2147483647" maxStringContentLength="2147483647"
                                  maxBytesPerRead="2147483647" maxDepth="2147483647"      

                                  maxNameTableCharCount="2147483647" />
                </binding>
            </basicHttpBinding>
        </bindings>

2.客户端

        <binding name=" " maxBufferSize="2147483647" maxReceivedMessageSize="2147483647">
                    <security mode="None" />
                </binding>