NLog：从nlog.config切换到编程配置

Question

以前我的ASP .NET MVC5应用程序错误日志记录工作与使用nlog.config文件很好。现在我想摆脱配置文件的方式;我想以编程方式配置Nlog并删除配置文件的需要。这些示例很好地向我展示了如何以编程方式进行设置，但我很困惑如何实际调用配置类并实际执行它。继承人我有什么：

protected void Application_Error(object sender, EventArgs e) 
    { 
     Exception ex = Server.GetLastError(); 
     NALSPrincipal userInfo = (NALSPrincipal)Context.User; 

     // Step 1. Create configuration object 
     var config = new LoggingConfiguration(); 

     // Step 2. Create targets and add them to the configuration 
     var fileTarget = new FileTarget(); 
     config.AddTarget("file", fileTarget); 

     // Step 3. Set target properties 
     fileTarget.FileName = "C:/nlogFile.txt"; 
     fileTarget.Layout = "Exception Type: ${exception:format=Type}${newline} 
          Target Site: ${event-context:TargetSite}${newline} 
          Message: ${message}"; 

     // Step 4. Define rules 
     var rule2 = new LoggingRule("*", LogLevel.Trace, fileTarget); 
     config.LoggingRules.Add(rule2); 

     // Step 5. Activate the configuration 
     LogManager.Configuration = config; 

     Logger logger = LogManager.GetCurrentClassLogger(); 
     LogEventInfo eventInfo = new LogEventInfo(LogLevel.Trace, "", logger.Name); 
     eventInfo.Properties["TargetSite"] = ex.TargetSite; 
     eventInfo.Exception = ex; 
     logger.Log(eventInfo);  
    } 

有没有人知道这是行不通的？我的继承人基于这一关的文档： https://github.com/nlog/NLog/wiki/Configuration-API

如果有帮助，这是我不得不回来时，我使用的nlog.config文件，它工作得很好：

protected void Application_Error(object sender, EventArgs e) 
    { 
     Exception ex = Server.GetLastError(); 
     NALSPrincipal userInfo = (NALSPrincipal)Context.User; 
     Logger logger = LogManager.GetCurrentClassLogger(); 
     LogEventInfo eventInfo = new LogEventInfo(LogLevel.Trace, "", logger.Name); 
     eventInfo.Properties["CUID"] = userInfo.userDetails.ContactID; 
     eventInfo.Properties["Username"] = Context.User.Identity.Name; 
     eventInfo.Properties["TargetSite"] = ex.TargetSite; 
     eventInfo.Exception = ex; 
     logger.Log(eventInfo);  
    } 

任何帮助，非常感谢！谢谢！

Answer 1

您是否有足够的权利在C驱动器的根目录中写入日志文件来运行应用程序？试用$ {basedir} /nLogFile.txt，看看它是否有效。