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我根据互联网教程修改了app.config以设置 log4view,之后我在代码的确切位置得到了一个关于配置的异常,

System.Configuration.dll 中的“System.Configuration.ConfigurationErrorsException”配置初始化错误

抛出此异常的确切点在这里(这发生在线程内部):

ServicePointManager.Expect100Continue = False

到目前为止,我没有编译或运行时错误。

这是我的app.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
  </startup>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>
  <log4net>
    <root>
      <level value="DEBUG"/>
      <appender-ref ref="FileAppender"/>
      <appender-ref ref="RollingFileAppender" />
    </root>
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %logger [%ndc] 
      - %message%newline"/>
    </layout>
    <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value="C:\temp\TwitterStreamListener.log" />
      <appendToFile value="true" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="5" />
      <maximumFileSize value="1MB" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %level %logger - %message%newline" />
      </layout>
    </appender>
  </log4net>
</configuration>
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