点滴积累【C#】---错误日志记录到txt文本里。

效果：

描述：将系统中的错误信息，try catch到日志里面。

代码：

【后端代码】

 1 using System; 2 using System.Collections.Generic; 3 using System.Configuration; 4 using System.IO; 5 using System.Linq; 6 using System.Web; 7  8 namespace GetLog 9 {10     public class WriteLog11     {12         PRivate static StreamWriter streamWriter; //写文件  13 14         public static void WriteError(string message)15         {16             try17             {18                 //DateTime dt = new DateTime();19                 string directPath = ConfigurationManager.AppSettings["LogFilePath"].ToString().Trim();    //获得文件夹路径20                 if (!Directory.Exists(directPath))   //判断文件夹是否存在，如果不存在则创建21                 {22                     Directory.CreateDirectory(directPath);23                 }24                 directPath += string.Format(@"/{0}.log", DateTime.Now.ToString("yyyy-MM-dd"));25                 if (streamWriter == null)26                 {27                     streamWriter = !File.Exists(directPath) ? File.CreateText(directPath) : File.AppendText(directPath);    //判断文件是否存在如果不存在则创建，如果存在则添加。28                 }29                 streamWriter.WriteLine("***********************************************************************");30                 streamWriter.WriteLine(DateTime.Now.ToString("HH:mm:ss"));31                 streamWriter.WriteLine("输出信息：错误信息");32                 if (message != null)33                 {34                     streamWriter.WriteLine("异常信息：/r/n" + message);35                 }36             }37             finally38             {39                 if (streamWriter != null)40                 {41                     streamWriter.Flush();42                     streamWriter.Dispose();43                     streamWriter = null;44                 }45             }46         }47     }48 }

【调用】：

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace GetLog{    public partial class testLog : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {        }        protected void btn_Click(object sender, EventArgs e)        {            try            {                int intStr=Convert.ToInt32(tb.Text);                tb2.Text ="转换成功:" +intStr.ToString();            }            catch (Exception ex)            {                WriteLog.WriteError(ex.ToString());                throw ex;            }        }    }}

Demo下载：

http://files.VEVb.com/files/xinchun/GetLog.zip