c#簡易 log

初學C#時的習作。

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace database
{
class DebugLog
{
#region common define
private static string LOGFILE = "logfile.log";
private static string APPLOGINFO = "應用程式啟動";
private static string APPLOGCLOSE = "應用程式關閉";
private static string APPLOGSEPARATOR = " ||... ";
private static string APPLOGFOOTER = "--------------------------------------------------";
private static StreamWriter sw;
#endregion

//設定字符集
public static void setEncoing()
{
//sw.Encoding = System.Text.Encoding.Unicode;
}

//建立應用程式日誌
public static void CreateAppLog()
{
if (File.Exists(LOGFILE))
{
sw = File.AppendText(LOGFILE);
}

else
{
sw = File.CreateText(LOGFILE);
}

sw.WriteLine(System.DateTime.Now + APPLOGSEPARATOR + APPLOGINFO);
CloseLog();
}

//建立執行時日誌
public static void CreateLog()
{
if (File.Exists(LOGFILE))
{
sw = File.AppendText(LOGFILE);
}

else
{
sw = File.CreateText(LOGFILE);
}

}

//關閉應用程式日誌
public static void CloseAppLog()
{
CreateLog();
sw.WriteLine(System.DateTime.Now + APPLOGSEPARATOR + APPLOGCLOSE);
sw.WriteLine(APPLOGFOOTER);
sw.Close();
}

//關閉執行時日誌
public static void CloseLog()
{
sw.WriteLine(System.DateTime.Now + APPLOGSEPARATOR + APPLOGCLOSE);
sw.Close();
}

//寫log obj
public static void WriteLog(object obj)
{
string str = obj.ToString();

CreateLog();

if (File.Exists(LOGFILE))
{
sw.WriteLine(System.DateTime.Now + APPLOGSEPARATOR + str);
}

else
{
sw = File.CreateText(LOGFILE);
sw.WriteLine(System.DateTime.Now + APPLOGSEPARATOR + str);
}

sw.Close();

}

//寫log string
public static void WriteLog(string str)
{

CreateLog();

if (File.Exists(LOGFILE))
{
sw.WriteLine(System.DateTime.Now + APPLOGSEPARATOR + str);
}

else
{
sw = File.CreateText(LOGFILE);
sw.WriteLine(System.DateTime.Now + APPLOGSEPARATOR + str);
}

sw.Close();

}

//寫log obj
public static void Debuglog(object ob)
{
WriteLog(ob);
}

//寫錯誤日誌
public static void Debuglog(Exception e)
{
WriteLog(e.Message);
}
}
}

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