C#写异常日志

1.Write方法是写日志主要方法。

2.DeleteLog方法是删除指定日期之前生成的日志。

public static void Write(string Msg)
{
string strPath;
DateTime dt = DateTime.Now;
try
{
strPath =AppDomain.CurrentDomain.BaseDirectory + “\Log”;
if (Directory.Exists(strPath) == false)
{
Directory.CreateDirectory(strPath);
}

           DeleteLog(strPath);
           strPath = strPath + "\\" + dt.ToString("yyyyMMdd") + ".txt";<br />               StreamWriter FileWriter = new StreamWriter(strPath, true);<br />               FileWriter.WriteLine(dt.ToString("HH:mm:ss")  + Msg);<br />               FileWriter.Close();<br />           }<br />           catch (Exception ex)<br />           {<br />               string str = ex.Message.ToString();<br />           }<br />       }<br />       public static void DeleteLog(string sLogPath)<br />       {<br />           //string strFolderPath = @"E:\Zhao\我的代码\f福建中医药大学附属人民医院\定制化服务\bin\Debug\logs";
       DirectoryInfo dyInfo = new DirectoryInfo(sLogPath);<br />           //获取文件夹下所有的文件<br />           foreach (FileInfo feInfo in dyInfo.GetFiles())<br />           {<br />               //判断文件日期是否小于指定日期，是则删除<br />               if (feInfo.CreationTime < DateTime.Now.AddDays(-15))<br />                   feInfo.Delete();<br />           }<br />       }

原文链接：https://blog.csdn.net/weixin_42800530/article/details/83546201

public static void WriteLog(Exception ex)
{
string errorTime = “异常时间：” + DateTime.Now.ToString();
string errorAddress = “异常地址：” + HttpContext.Current.Request.Url.ToString();
string errorInfo = “异常信息：” + ex.Message;
string errorSource = “错误源：” + ex.Source;
string errorType = “运行类型：” + ex.GetType();
string errorFunction = “异常函数：” + ex.TargetSite;
string errorTrace = “堆栈信息：” + ex.StackTrace;
HttpContext.Current.Server.ClearError();
System.IO.StreamWriter writer = null;
try
{

//写入日志
string path = string.Empty;
path = HttpContext.Current.Server.MapPath(“~/ErrorLogs/“);
//不存在则创建错误日志文件夹
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
path += string.Format(@”{0}.txt”, DateTime.Now.ToString(“yyyy-MM-dd”));

writer = !System.IO.File.Exists(path) ? System.IO.File.CreateText(path) : System.IO.File.AppendText(path); //判断文件是否存在，如果不存在则创建，存在则添加
writer.WriteLine(“用户IP:” + HttpContext.Current.Request.UserHostAddress);
writer.WriteLine(errorTime);
writer.WriteLine(errorAddress);
writer.WriteLine(errorInfo);
writer.WriteLine(errorSource);
writer.WriteLine(errorType);
writer.WriteLine(errorFunction);
writer.WriteLine(errorTrace);
writer.WriteLine(“**“);
}
finally
{
if (writer != null)
{
writer.Close();
}
}
}