ADO.NET Entity Framework CodeFirst 怎么输出日志(EF4.3)

ADO.NET Entity Framework CodeFirst 如何输出日志(EF4.3)
之前写过一篇如何利用 EFProviderWrappers 在EF中增加日志的blog，那篇文章是基于 ModelFirst 来写的，这里在 EF 4.3 CodeFirst 上再次实现。

1. 事前准备
下载 EFProviderWrappers 程序集（点击此处下载），添加：EFProviderWrapperToolkit.dll，EFTracingProvider.dll 引用。
并通过 NuGet 添加 EntityFramework 4.3， Log4Net。

App.config中添加连接字符串，注册 EFProviderWrappers
直接添加了一个空mdf文件(TestDB.mdf)作为Database，注意 CodeFirst 中连接字符串为普通的ADO.NET数据库连接字符串。ModelFirst中则是EntityConnectionString，而这一点也成为后面的一个小障碍。
<br /><br /><p>利用 Log4Net 就不用说了，可以参看我前面这篇文章。</p><br /><style type="text/css">span,div { font-family:'Microsoft YaHei'; }</style> </p><div class="aged2"><script type="text/javascript">a("article_content_down");</script></div> </div> <div id="pagebox" > <a href="/jiaocheng/netfram/" target="_blank">查看更多</a> <A href="/jiaocheng/20121217/1587054.html" title="登记dll失败，请求援助">下一篇</A></div> <div id="MainLeftll"> <div id="MainLeftllToolbar">本文网址：<a href="https://www.reader8.com/jiaocheng/20120620/1587057.html">https://www.reader8.com/jiaocheng/20120620/1587057.html</a></div> <div class="related"><span class="relatedIco1">读书人精选</span> <ul class="relatedList"> </ul> </div> <div class="aged3"><script type="text/javascript">a("article_content_down2");</script></div> <div class="aged3a"><script type="text/javascript">a("article_content_down3");</script></div> </div> </div> <!-- 文章正文左边结束 --> <!-- 文章正文右边开始 --> <div class="leftbox_r"> <div class="aged4"><script type="text/javascript">a("article_right_up");</script></div> <div class="Rtitle"> <span class="Rtitle_text">热点排行</span></div> <div class="RContl"> <ul> <li><a href="/jiaocheng/20131206/1592967.html" target="_blank">关于EF连接MySql的有关问题，求指导</a></li> <li><a href="/jiaocheng/20130906/1588847.html" target="_blank">咨询EF 的代码怎么写成通用的</a></li> <li><a href="/jiaocheng/20130826/1592699.html" target="_blank">施用Robot Framework集成HttpLibrary的自</a></li> <li><a href="/jiaocheng/20130906/1589530.html" target="_blank">哪位高手有winform对datagridview进行增</a></li> <li><a href="/jiaocheng/20131123/1587234.html" target="_blank">相熟.net CodeDom的请进</a></li> <li><a href="/jiaocheng/20131029/1590880.html" target="_blank">xCode5增加framework包有有关问题</a></li> <li><a href="/jiaocheng/20130907/1591019.html" target="_blank">jeecg-framework-3.3.2-RELEASE 最新版本</a></li> <li><a href="/jiaocheng/20131220/1593412.html" target="_blank">请问关于EntityFrameWork 复制新增有关问</a></li> <li><a href="/jiaocheng/20131109/1592430.html" target="_blank">不能与此同时打开SQLServer2008和VS2010</a></li> <li><a href="/jiaocheng/20130905/1592961.html" target="_blank">64位.NET 程序怎么快速读取EXCEL文件</a></li> </ul> </div> <div class="aged7"><script type="text/javascript">a("article_right_up2");</script></div> <!-- 文章正文右边结束 --> </div> <!--主体结束--> <script type="text/javascript">a("article_down_up");</script> <script type="text/javascript">a("foot");</script> <script type="text/javascript">a("article_down_up2");</script> <!--主体结束--> <div style="display:none"> <!--百度统计代码--> <script> var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?d6151f323a57d16696165e47eee86d53"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })(); </script> </div> <script type="text/javascript">a("allbt");</script> </body> </html>