1. 建立檔案

public static void WriteDataFile(string message, string fileName)
        {
            FileStream fs = null;
            StreamWriter sw = null;
            string headStr = "測量點\t資料時間\t正向有功總\t正向有功尖\t正向有功峰\t正向有功平\t正向有功谷\t正向無功總\t正向無功尖\t正向無功峰\t正向無功平\t正向無功谷\t反向有功總\t反向無功總\t有功功率總\t有功功率A相\t有功功率B相\t有功功率C相\t無功功率總\t無功功率A相\t無功功率B相\t無功功率C相\t功率因數總\t功率因數A相\t功率因數B相\t功率因數C相\t電壓A\t電壓B\t電壓C\t電流A\t電流B\t電流C
 
";
            bool isNew = false;

            string fileNameD = DateTime.Today.ToString("yyyyMMdd");
            string bsFileName = Application.StartupPath + ("/Data/" + fileNameD + "/" + fileName + "Data.txt");
            if (File.Exists(bsFileName) == false)
            {
                fs = new
 
 FileStream(bsFileName, FileMode.Create);
                fs.Close();
                isNew = true;
            }
            
            try
            {
                lock (bsFileName)
                { 
                    fs = new FileStream(bsFileName, FileMode.Append, FileAccess.Write);
                    sw 
 
= new StreamWriter(fs);
                    if (message == "")
                    {
                        if (isNew == true)
                        {
                            sw.WriteLine(headStr);
                        }
                    }
                    else
                    {
                        sw.WriteLine(message);
                    }
                }
            }
            catch (Exception ee)
            {
                Console.Write(ee.ToString());
                Log log = Log.Instance();
                log.Error("WriteFile" + ee.ToString());
            }
            finally
            {
                if (fs != null)
                {
                    sw.Close();
                }
                if (fs != null)
                {
                    fs.Close();
                }
            }
            
        }

2. 寫入資料或穿件檔案

Common.WriteDemandFile(Protocol.AnalyseDataKeDong(message), dataFileName);