using System;
using System.IO;

namespace SQLHelper
{
	/// <summary>
	/// 錯誤處理函數，用于記錄錯誤日志
	/// </summary>
	public class SystemError 
	{
		//記錄錯誤日志位置
		private static string fileName = "c:\\cmssystemlog.txt";

		public static String  FileName
		{
			get
			{
				return(fileName);
			}
			set
			{
				if(value != null || value != "")
				{
					fileName = value;
				}
			}
		}

		/// <summary>
		/// 記錄日志至文本文件
		/// </summary>
		/// <param name="message">記錄的內容</param>
		public static void SystemLog(string message) 
		{
			if(File.Exists(FileName))
			{
				///如果日志文件已經存在，則直接寫入日志文件
				StreamWriter sw = File.AppendText(FileName);
				sw.WriteLine("\n");
				sw.WriteLine(DateTime.Now.ToString() + ": " + message);
				sw.Close();
			}
			else
			{
				///創建日志文件
				StreamWriter sw = File.CreateText(FileName);
				sw.Close();
			}	
		}
	}
}