程式log日誌 c#

 

日誌，對程式的排查錯誤很有用處，現寫了一個日誌的類。共用之：

1. using System;
2. using System.Collections.Generic;
3. using System.Text;
5. namespace NetLog
6. {
7.     public static class NetLog
8.     {
10.         static string _logFileName = DateTime.Now.Day.ToString() + " Log";
11.         static string _fileDirectory = System.Environment.CurrentDirectory + "//PQDlog" + "//" + DateTime.Now.Year.ToString()
12.                     + "-" + DateTime.Now.Month.ToString();
16.         private static void checkPath()
17.         {
18.             if (!System.IO.Directory.Exists(_fileDirectory))
19.             {
20.                 System.IO.Directory.CreateDirectory(_fileDirectory);
21.             }
22.         }
23.         private static void checkFile(string fileName)
24.         {
25.             System.IO.StreamWriter sw;
26.             fileName = _fileDirectory + "//" + fileName+".log";
27.             if (!System.IO.File.Exists(fileName))
28.             {
29.                 //如果不存在此檔案，那麼建立它。
30.                sw= System.IO.File.CreateText(fileName);
31.                sw.Close();
32.             }
33.         }
35.         public static void WriteLog(string loginfo)
36.         {
37.             checkPath();
38.             checkFile(_logFileName);
39.             string fileName = _fileDirectory + "//" + _logFileName+".log";
40.             System.IO.FileStream filestream = new System.IO.FileStream(fileName, System.IO.FileMode.Open| System.IO.FileMode.Create,
41.                     System.IO.FileAccess.Write,System.IO.FileShare.None);
42.             System.IO.StreamWriter writer = new System.IO.StreamWriter(filestream,System.Text.Encoding.Default);
43.             
44.             writer.BaseStream.Seek(0, System.IO.SeekOrigin.End);
45.             
46.             writer.WriteLine("{0}--{1}", DateTime.Now.TimeOfDay, loginfo);
47.             writer.Flush();
48.             writer.Close();
49.             filestream.Close();
50.         }
52.         /// <summary>
53.         /// this log's filename.
54.         /// </summary>
55.         public static string LogFileName
56.         {
57.             get { return _logFileName; }
58.             set { _logFileName = value; }
59.         }
60.         /// <summary>
61.         /// this log's directory.
62.         /// </summary>
63.         public static string FileDirectory
64.         {
65.             get { return _fileDirectory; }
66.             set { _fileDirectory = value; }
67.         }
68.     }
69. }