执行错误记录的简单方法？

Question

我已经创建了一个小的C#winforms应用程序,作为一个附加功能,我正在考虑添加某种形式的错误记录到它.任何人都有任何关于这方面的好方法的建议？这是我从未考虑过添加到以前的项目中的功能,所以我愿意接受有更多经验的开发人员的建议.

我正在考虑将异常写入指定的文本文件或可能的数据库表.这是一个应用程序,将使用几个月,然后在更大的产品完成后丢弃.

Answer 1

因为您的日志记录需求很简单,所以我不会过多地研究外部库.

.NET Framework已在命名空间System.Diagnostics中附带此功能,您可以通过简单地调用Trace类下的方法来编写所需的所有日志记录:

Trace.TraceInformation("Your Information");
Trace.TraceError("Your Error");
Trace.TraceWarning("Your Warning");

然后在app.config文件中配置所有符合您需求的跟踪侦听器:

<configuration>
  // other config
  <system.diagnostics>
    <trace autoflush="true" indentsize="4">
      <listeners>
        <add name="consoleListener" type="System.Diagnostics.ConsoleTraceListener"/>
        <add name="textWriterListener" type="System.Diagnostics.TextWriterTraceListener" initializeData="YourLogFile.txt"/>
        <add name="eventLogListener" type="System.Diagnostics.EventLogTraceListener" initializeData="YourEventLogSource" />
        <remove name="Default"/>
      </listeners>
    </trace>
  </system.diagnostics>
  // other config
</configuration>

或者如果您愿意,还可以在应用程序中配置监听器,而不依赖于配置文件:

Trace.Listeners.Add(new TextWriterTraceListener("MyTextFile.log"));

请记住将Trace.AutoFlush属性设置为true,以使文本日志正常工作.

Answer 2

在我看来,最佳解决方案是使用NLog:http://nlog-project.org/

只需从NuGet安装配置包:http://www.nuget.org/packages/NLog.Config/ ,您将最终获得库和预先配置的文件记录器......

然后在您的代码中,您只需要:

// A logger member field:

private readonly Logger logger = LogManager.GetCurrentClassLogger(); // creates a logger using the class name

// use it:
logger.Info(...);
logger.Error(...);

// and also:
logger.ErrorException("text", ex); // which will log the stack trace.

在您获得的配置文件中,您需要取消注释所需的部分:

<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

    <!-- 
        See http://nlog-project.org/wiki/Configuration_file 
        for information on customizing logging rules and outputs.
    -->
    <targets>
        <!-- add your targets here -->

        <!-- UNCOMMENT THIS!
        <target xsi:type="File" name="f" fileName="${basedir}/logs/${shortdate}.log"
                layout="${longdate} ${uppercase:${level}} ${message}" />
        -->
    </targets>

    <rules>
        <!-- add your logging rules here -->

        <!-- UNCOMMENT THIS!
        <logger name="*" minlevel="Trace" writeTo="f" />
        -->
    </rules>
</nlog>

编辑nlog.config文件的属性

Copy to Output Directory: Copy always

Answer 3

你可以使用SimpleLog.

它是一个简单但强大而强大的一流日志记录解决方案,易于理解,易于集成且易于使用.无需花费数天时间来设置和自定义log4Net,通过该课程,您可以在几分钟内完成.

虽然它当前登录到文件,但它应该可以轻松自定义以登录到数据库.

http://www.codeproject.com/Tips/585796/Simple-Log

Answer 4

创建一个名为 Log.cs 的类 我正在使用 Linq To SQl 保存到数据库

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Text;
public static partial class Log
{
    /// <summary>
    /// Saves the exception details to ErrorLogging db with Low Priority
    /// </summary>
    /// <param name="ex">The exception.</param>
    public static void Save(this Exception ex)
    {
        Save(ex, ImpactLevel.Low, "");
    }

    /// <summary>
    /// Saves the exception details to ErrorLogging db with specified ImpactLevel
    /// </summary>
    /// <param name="ex">The exception.</param>
    /// <param name="impactLevel">The Impact level.</param>
    public static void Save(this Exception ex, ImpactLevel impactLevel)
    {
        Save(ex, impactLevel,"");
    }
    /// <summary>
    /// Saves the exception details to ErrorLogging db with specified ImpactLevel and user message
    /// </summary>
    /// <param name="ex">The exception</param>
    /// <param name="impactLevel">The impact level.</param>
    /// <param name="errorDescription">The error Description.</param>
    public static void Save(this Exception ex, ImpactLevel impactLevel, string errorDescription)
    {
        using (var db = new ErrorLoggingDataContext())
        {
            Log log = new Log();

            if (errorDescription != null && errorDescription != "")
            {
                log.ErrorShortDescription = errorDescription;
            }
            log.ExceptionType = ex.GetType().FullName;
            var stackTrace = new StackTrace(ex, true);
            var allFrames = stackTrace.GetFrames().ToList();
            foreach (var frame in allFrames)
            {
                log.FileName = frame.GetFileName();
                log.LineNumber = frame.GetFileLineNumber();
                var method = frame.GetMethod();
                log.MethodName = method.Name;
                log.ClassName = frame.GetMethod().DeclaringType.ToString();
            }

            log.ImpactLevel = impactLevel.ToString();
            try
            {
                log.ApplicationName = Assembly.GetCallingAssembly().GetName().Name;
            }
            catch
            {
                log.ApplicationName = "";
            }

            log.ErrorMessage = ex.Message;
            log.StackTrace = ex.StackTrace;
            if (ex.InnerException != null)
            {
                log.InnerException = ex.InnerException.ToString();
                log.InnerExceptionMessage = ex.InnerException.Message;
            }
            log.IpAddress = ""; //get the ip address

            if (System.Diagnostics.Debugger.IsAttached)
            {
                log.IsProduction = false;
            }

            try
            {
                db.Logs.InsertOnSubmit(log);
                db.SubmitChanges();
            }
            catch (Exception eex)
            {

            }
        }
    }
}

创建下表

USE [database Name]
GO

/****** Object:  Table [dbo].[Log]    Script Date: 9/27/2016 11:52:32 AM ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

SET ANSI_PADDING ON
GO

CREATE TABLE [dbo].[Log](
    [LogId] [INT] IDENTITY(1,1) NOT NULL,
    [ErrorDate] [DATETIME] NOT NULL CONSTRAINT [DF_Log_Date]  DEFAULT (GETDATE()),
    [ErrorShortDescription] [VARCHAR](1000) NULL,
    [ExceptionType] [VARCHAR](255) NULL,
    [FileName] [VARCHAR](1000) NULL,
    [LineNumber] [INT] NULL,
    [MethodName] [VARCHAR](255) NULL,
    [ClassName] [VARCHAR](150) NULL,
    [ImpactLevel] [VARCHAR](50) NOT NULL,
    [ApplicationName] [VARCHAR](255) NULL,
    [ErrorMessage] [VARCHAR](4000) NULL,
    [StackTrace] [VARCHAR](MAX) NULL,
    [InnerException] [VARCHAR](2000) NULL,
    [InnerExceptionMessage] [VARCHAR](2000) NULL,
    [IpAddress] [VARCHAR](150) NULL,
    [IsProduction] [BIT] NOT NULL CONSTRAINT [DF_Log_IsProduction]  DEFAULT ((1)),
    [LastModified] [DATETIME] NOT NULL CONSTRAINT [DF_Log_LastModified]  DEFAULT (GETDATE()),
 CONSTRAINT [PK_Log] PRIMARY KEY CLUSTERED 
(
    [LogId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

GO

SET ANSI_PADDING OFF
GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'This table holds all the exceptions. 
ErrorData = when error happened
,[ErrorShortDescription] == short desc about the error entered by the developers
      ,[FileName] = file where error happened full path
      ,[LineNumber] = line number where code failed
      ,[MethodName] = method name where exception happened
      ,[ClassName] = class where exception happened
      ,[ImpactLevel] = high, medium, low
      ,[ApplicationName] = name of the application where error came from
      ,[ErrorMessage] = exception error messge
      ,[StackTrace] = C# stack trace
      ,[InnerException] = inner exception of strack trace
      ,[InnerExceptionMessage] = inner message
      ,[IpAddress]
      ,[IsProduction]' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'Log'
GO

影响级别基本上是枚举

 public enum ImpactLevel
    {
        High = 0,
        Medium = 1,
        Low = 2,
    }

您可以按如下方式使用它

try
{


}
catch(Exception ex)
{
    //this will save the exception details and mark exception as low priority
    ex.Save();
}


try
{


}
catch(Exception ex)
{
    //this will save the exception details with  priority you define: High, Medium,Low
    ex.Save(ImpactLevel.Medium);
}

try
{


}
catch(Exception ex)
{
    //this will save the exception details with  priority you define: High, Medium,Low
    ex.Save(ImpactLevel.Medium, "You can enter an details you want here ");
}

Answer 5

log4net 的工作方式就像一块砖头。配置可能有点困难，但值得。它还允许您配置这些日志文件等的文件锁定。

http://www.codeproject.com/Articles/140911/log4net-Tutorial