SL+WCF+LINQ 问题阶段性小结

1)      In WCF Hosted Project or Web Solution,Make DataContext  (DMBL) Seriable:

Set SerializationMode=UnIDirectional

If not,when clIEnt application try to generate the WCF services WSDL will error occurred,Because some object can’t be serialized .

This problem may be not occurred in local machine even the version if RELEASE .

But   it will occurred in Remote Server .

2)Make WCF use basichttpBinding

(If your wcf is in your web application then modify it in WebApplication web.config file

else if your wcf is a standalone application then modify it in its' web.config)

      3)Make the sl use the wsdl directly copIEd from the Serivice.svc Start Page

(this will make sure the sl and the wcf used the same port,and this will affect

the services.config in sl project will different)

4) 以下三个步骤，在传输大数据时WCF出错，显示404 错误时，检查一下几个配置是否正确。

# Bind your Web.config insIDe webservice with bindingConfiguration="LargeBuffer" where LargeBuffer is declared like this

   <bindings>

      <basichttpBinding>

        <binding name="LargeBuffer" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647">

          <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"

           maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxnametableCharCount="2147483647" />

        </binding>

      </basichttpBinding>

    </bindings>

# Then,insIDe ServiceReferences.ClIEntConfig,you should have this

<system.serviceModel>

        <bindings>

            <basichttpBinding>

                <binding name="BasichttpBinding_Buffer" maxBufferSize="2147483647"

                    maxReceivedMessageSize="2147483647">

                    <security mode="None" />

                </binding>

            </basichttpBinding>

        </bindings>

        <clIEnt>

            <endpoint address="http://3water/SteveWeb/SteveService/Service.svc"

                binding="basichttpBinding" bindingConfiguration="BasichttpBinding_Buffer"

                contract="SteveSLWeb.SteveWebService.IService" name="BasichttpBinding_Buffer" />

        </clIEnt>

    </system.serviceModel>

# The most important thing here is to make sure your webservice and your web is in the same port [yourweb]:#port if they are in the different ones,errors should occur. By the way,you can use IIS to host your Web,and the trick can be easily done. Moreover,if you use IIS,make sure you have put the clIEntaccesspolicy.xml onto the wwwroot with this format

<?xml version="1.0" enCoding="utf-8"?>

<access-policy>

  <cross-domain-access>

    <policy>

      <allow-from http-request-headers="*">

        <domain uri="*"/>

      </allow-from>

      <grant-to>

        <resource path="/" include-subpaths="true"/>

      </grant-to>

    </policy>

  </cross-domain-access>

</access-policy>

5) 需要调试时,将下列CODE写入HOST WCF的WEB.CONfig中(直接在根节点下面)。如果是APP,则写入APP.EXE。CONfig中. 生成的SVCLOG文件，可以用windows SDK中的Trace Log file VIEwer 看。否则很难分析。

 <system.diagnostics>

    <sources>

      <source name="System.ServiceModel"

              switchValue="information,ActivityTracing"

              propagateActivity="true">

        <Listeners>

          <add name="traceListener"

              type="System.Diagnostics.XmlWriterTraceListener"

              initializeData= "c:/log/Traces.svclog" />

        </Listeners>

      </source>

    </sources>

  </system.diagnostics>

6) 如果碰到404的错误，说某个System.Web.dll找不到。然后先前又改过Asp.net的页面或者项目，

原因未明。但是可以关闭重新开启项目后成功运行 . 如果不行，还可以另外删除Bin 和Obj目录。

7)如果IIS中不能解析Xap的包，那么说明还没有注册MIME类型。

Extension : .xap

MIME Type : application/x-silverlight-app

Just open the propertIEs dialog of virtual path,and add a MIME type

8)使用IsolatedStorage的时候保存自定义类型对象可以使用类似如下代码: 读取时类似

                IsolatedStorageSettings.ApplicationSettings[ISO_BIGP_CACHE] = Globalinfo.CurBigPhotoDict;

                IsolatedStorageSettings.ApplicationSettings.Save();

Summary :