C#文件输出LOG

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Web;
using System.Web.UI;

namespace OrderSystem
{
public class writeLog
{
/// <summary>
/// 写入日志文件
/// </summary>
/// <param name="input"></param>
public static void WriteLogFile(string input)
{
///指定日志文件的目录
string fname = "C:\\"+
DateTime.Now.Year + '-' +
DateTime.Now.Month + '-' +
DateTime.Now.Day + "_LogFile"+".txt";

if (!File.Exists(fname))
{
//不存在文件
File.Create(fname).Dispose();//创建该文件
}

/**/
///判断文件是否存在以及是否大于2K
/* if (finfo.Length > 1024 * 1024 * 10)
{
/**/
//文件超过10MB则重命名
/* File.Move(fname, Directory.GetCurrentDirectory() + DateTime.Now.TimeOfDay + "\\LogFile.txt");
//删除该文件
//finfo.Delete();
}*/

using (StreamWriter log = new StreamWriter(fname, true))
{
//FileStream fs = new FileStream(url, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);FileMode.Append

///设置写数据流的起始位置为文件流的末尾
log.BaseStream.Seek(0, SeekOrigin.End);

///写入“Log Entry : ”
log.Write("\n\rLog Entry : ");

///写入当前系统时间并换行
log.Write("{0} {1} \n\r", DateTime.Now.ToLongTimeString(),
DateTime.Now.ToLongDateString());

///写入日志内容并换行
log.Write(input + "\n\r");

//清空缓冲区
log.Flush();
//关闭流
log.Close();
}
}

 

/// <summary>
/// 将异常打印到LOG文件
/// </summary>
/// <param name="ex">异常</param>
/// <param name="LogAddress">日志文件地址</param>
public static void WriteLogTxt(Exception ex, string LogAddress = "")
{
//如果日志文件为空，则默认在Debug目录下新建 YYYY-mm-dd_Log.log文件
if (LogAddress == "")
{
///指定日志文件的目录
LogAddress = "E:\\" +
DateTime.Now.Year + '-' +
DateTime.Now.Month + '-' +
DateTime.Now.Day + "_Log.log";
}

FileInfo finfo = new FileInfo(LogAddress);

if (!finfo.Exists)
{
FileStream fs;
fs = File.Create(LogAddress);
fs.Close();
finfo = new FileInfo(LogAddress);
}

//把异常信息输出到文件
StreamWriter sw = new StreamWriter(LogAddress, true);
sw.WriteLine("当前时间：" + DateTime.Now.ToString());
sw.WriteLine("异常信息：" + ex.Message);
sw.WriteLine("异常对象：" + ex.Source);
sw.WriteLine("调用堆栈：\n" + ex.StackTrace.Trim());
sw.WriteLine("触发方法：" + ex.TargetSite);
sw.WriteLine();
sw.Close();
}

}
}