学步园

记录Errorlog

 //获得程序运行目录

 string runExeDir = Path.GetDirectoryName(Process.GetCurrentProcess().MainModule.FileName);

 //using System.IO;
     public static void WriteErrorLog(string strMsg)
     {
          string filePath = @"C:\ErrorLog.log";

          using (FileStream fs = new FileStream(filePath,FileMode.Append,FileAccess.Write))
          {
              using (StreamWriter sw = new StreamWriter(fs,Encoding.UTF8))
              {
                  string writeTime = DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss");
                  string logMsg = ">>" + writeTime + ":" + strMsg + ";";
                  sw.WriteLine(logMsg);
              }
          }

      }

先清空文本里面的内容，在重新写入数据

 

 public static void ReWriteTxt(string txtPath,string strMsg)
        {
          
            using (FileStream fs = new FileStream(txtPath,FileMode.Truncate, FileAccess.Write))
            {               
                    using (StreamWriter sw = new StreamWriter(fs, Encoding.Unicode))
                    {
                        sw.WriteLine(strMsg);
                    }                
            }
        }

 

 

 

以创建文件日期为条件删除旧文档

public static void DeleteOldFile(string filePath)
        {
            string[] fileName = Directory.GetFiles(filePath);
            int fileCount = Directory.GetFiles(filePath).Length;
            for (int i = 0; i < fileCount - 1; i++)
            {

                string strPathFileName = fileName[i];
                int iDay = File.GetLastWriteTime(strPathFileName).DayOfYear;
                int nowDay = DateTime.Now.DayOfYear;
                    if(nowDay-iDay>3)
                    {
                        File.Delete(strPathFileName);
                    }
            }        
  
        }

读取文本

 

 public void ReadFormText()
        {
            string runPath = System.Windows.Forms.Application.StartupPath;
            string filePath = runPath.Substring(0, runPath.IndexOf("bin")) + "files\\StockList.txt";                        
            using (StreamReader sr = new StreamReader(filePath, System.Text.Encoding.UTF8))
            {
                 String line;
                // Read and display lines from the file until the end of
                // the file is reached.
                while ((line = sr.ReadLine()) != null)
                {
                    Console.WriteLine(line);
                }

            }            
        
        }

 遍历指定路径下的文件

  public static void ReadFile()
        {
            //遍历指定路径下的所有文件和文件下的子文件
            string fileDir= @"E:\Shenfazhan\当前数据";
            DirectoryInfo dirs = new DirectoryInfo(fileDir);  
            DirectoryInfo[] dir = dirs.GetDirectories();
            foreach (DirectoryInfo d in dir)
            {
               string name1=d.Name;
               string filePath = fileDir + "\\" + d.Name;
               string[] fileName = Directory.GetFiles(filePath);
               int fileCount = Directory.GetFiles(filePath).Length;
               for (int i = 0; i < fileCount; i++)
               {

                   string strPathFileName = fileName[i];

               }

            } 
         
        }