.NET代码错误日志

1.首先创建一个类Files
using System.IO;
using System.Security.AccessControl;
namespace 命名空间
{
    public class Files
    {
        /// <summary>
        /// 给指定的操作系统用户赋操作权限
        /// </summary>
        /// <param name="pathname">文件的路径</param>
        /// <param name="username">操作系统用户名</param>
        /// <param name="power">操作权限，枚举型：FullControl，ReadOnly，Write，Modify</param>
        /// <returns>是否成功</returns>
        public static bool addpathPower(string pathname, string username, string power)
        {
            bool istrue = true;
            DirectoryInfo dirinfo = new DirectoryInfo(pathname);
            if ((dirinfo.Attributes & FileAttributes.ReadOnly) != 0)
            {
                dirinfo.Attributes = FileAttributes.Normal;
            }
            //取得访问控制列表  
            DirectorySecurity dirsecurity = dirinfo.GetAccessControl();
            switch (power)
            {
                case "FullControl":
                    dirsecurity.AddAccessRule(new FileSystemAccessRule(username, FileSystemRights.FullControl, InheritanceFlags.ContainerInherit, PropagationFlags.InheritOnly, AccessControlType.Allow));
                    break;
                case "ReadOnly":
                    dirsecurity.AddAccessRule(new FileSystemAccessRule(username, FileSystemRights.Read, AccessControlType.Allow));
                    break;
                case "Write":
                    dirsecurity.AddAccessRule(new FileSystemAccessRule(username, FileSystemRights.Write, AccessControlType.Allow));
                    break;
                case "Modify":
                    dirsecurity.AddAccessRule(new FileSystemAccessRule(username, FileSystemRights.Modify, AccessControlType.Allow));
                    break;
            }
            try
            {
                dirinfo.SetAccessControl(dirsecurity);
            }
            catch
            {
                istrue = false;
            }
            return istrue;
        }
    }
}
2.之后创建Log类
using System.Text;
using System.IO;
namespace命名空间
{
    public class Log
    {
        #region  记录错误日志
        /// <summary>
        /// 记录错误日志
        /// </summary>
        /// <param name="strformat">错误信息</param>
        /// <param name="path">日志存放位置</param>
        public static void WriteErrorLog(string strformat, string path)
        {
            try
            {
                if (!File.Exists(path))
                {
                    string nofile = Path.GetDirectoryName(path);
                    if (!Directory.Exists(nofile))
                    {
                        Directory.CreateDirectory(nofile);
                        Files.addpathPower(nofile, "ASPNET", "FullControl");
                    }
                    FileStream fss = File.Create(path); ;
                    fss.Flush();
                    fss.Close();//创建之后进行关闭 
                }
                FileStream fs = new FileStream(path, FileMode.Append);
                StreamWriter streamWriter = new StreamWriter(fs);
                streamWriter.Write(DateTime.Now.ToString() + "：" + strformat + "\r\n" + "--------------------------\r\n");
                streamWriter.Flush();
                streamWriter.Close();
                fs.Close();
            }
            catch
            {
            }
        }
        /// <summary>
        /// 记录错误日志
        /// </summary>
        /// <param name="strformat">错误信息,和发送异常位置，系统名</param>
        /// <param name="fuzeren">负责人</param>
        public static void WriteError(string strformat, string fuzeren)
        {
            try
            {
                WriteErrorLog("负责人：" + fuzeren + strformat, "c://Program Files//cutt//error.txt");
                string path = "c://Program Files//cutt//" + fuzeren + "_error.txt";
                if (!File.Exists(path))
                {
                    string nofile = Path.GetDirectoryName(path);
                    if (!Directory.Exists(nofile))
                    {
                        Directory.CreateDirectory(nofile);
                        Files.addpathPower(nofile, "ASPNET", "FullControl"); //给aspnet用户加权限，避免权限不够不能写入服务器文件
                    }
                    FileStream fss =File.Create(path);;
                    fss.Flush();
                    fss.Close();//创建之后进行关闭 ，否则直接写入报错 
                }
                FileStream fs = new FileStream(path, FileMode.Append);
                StreamWriter streamWriter = new StreamWriter(fs);
                streamWriter.Write(DateTime.Now.ToString() + "：" + strformat + "\r\n" + "--------------------------\r\n");
                streamWriter.Flush();
                streamWriter.Close();
                fs.Close();
            }
            catch
            {
            }
        }
        #endregion
    }
}