public static void WriteMsg(string logName, string msg)

        {

            try

            {

                //string path = Path.Combine("./log");

                string path = Application.StartupPath + "./log";

                Directory.CreateDirectory(path);

                string logFileName = path + "\\" + DateTime.Now.ToString("yyyy-MM-dd") + ".log";//生成日志文件

                if (!File.Exists(logFileName))//判断日志是否为当天

                {

                    FileStream fs;

                    fs = File.Create(logFileName);//创建文件

                    fs.Close();

                }

                StreamWriter write = File.AppendText(logFileName);//文件中添加文件流

                write.WriteLine(DateTime.Now.ToString()+"： "+ logName + msg);

                //write.WriteLine("----------------分割线--------------------");

                write.Flush();

                write.Close();

            }

            catch (Exception )

            {

                string path = Path.Combine("./log");

                if (!Directory.Exists(path))

                {

                    Directory.CreateDirectory(path);

                    string logFileName = path + "\\" + DateTime.Now.ToString("yyyy-MM-dd") + ".log";

                    if (!File.Exists(logFileName))//判断日志是否为当天

                    {

                        FileStream fs;

                        fs = File.Create(logFileName);//创建文件

                        fs.Close();

                    }

                    StreamWriter write = File.AppendText(logFileName);//文件中添加文件流

                    //write.WriteLine(DateTime.Now.ToString("HH:mm:ss") + "" + logName + "\r\n" + msg);

                    write.WriteLine(DateTime.Now.ToString() + "： " + logName + msg);

                    // write.WriteLine("----------------分割线--------------------");

                    write.Flush();

                    write.Close();

                }

            }

        }