C# 记录错误日志

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程序的错误日志如何记录下来？

可以在遇到异常时，Catch异常，然后把异常的信息输出到txt文件中即可

/// <summary>
/// 错误日志
/// </summary>
public class LogHelper
{
private static object lockFlag = new object();
private static string LOG_FILE_PATH = AppDomain.CurrentDomain.BaseDirectory + "Log";
/// <summary>
/// 记录日志
/// 异常
/// </summary>
/// <param name="ex"></param>
public static void LogError(Exception ex)
{
LogInfo(String.Format("ExType:{0}\r\nExMessage:{1}\r\nExSource:{2}\r\nExStack:\r\n{3}\r\n",
ex.GetType(), ex.Message, ex.Source, ex.StackTrace));
}
public static void LogInfo(string msg)
{
lock (lockFlag)
{
IOHelper.CreateDirectory(LOG_FILE_PATH);
string fileName = LOG_FILE_PATH + "\\" + DateTime.Now.ToString("yyyy-MM-dd") + ".txt";
msg = String.Format("------------------------{0}------------------------------\r\n", DateTime.Now) + msg;
msg += "\r\n\r\n\r\n";
File.AppendAllText(fileName, msg);
}
}
}