C#对文件的操作的实例代码

//读取文件信息
  string []FileNames=this.openFileDialog1.FileNames;
  //取得文件大小
  FileInfo MyFileInfo=new FileInfo(FileName);
  float MyFileSize=(float)MyFileInfo.Length/(1024*1024);
  //打开MIDIAPLAYER
  this.axMediaPlayer1.FileName=FileName;   
  //取得作者信息
  string MyAuthor=this.axMediaPlayer1.GetMediaInfoString    (MediaPlayer.MPMediaInfoType.mpClipAuthor);
  //取得不含路径的文件名
  string MyShortFileName=FileName.Substring(FileName.LastIndexOf("\\")+1);    
  MyShortFileName=MyShortFileName.Substring(0,MyShortFileName.Length-4);

 

 //读取文件内容
   byte[] allStr = File.ReadAllBytes(textBox1.Text); 
   string[] allLine = new string[allStr.Length];

 

//打开并过滤
   OpenFileDialog openFlashDlg = new OpenFileDialog ();
   openFlashDlg.Filter = "Flash 动画(*.swf)|*.swf";

 

    C#写入/读出文本文件
  string fileName =@"c:I.txt";
  StreamReader sr = new StreamReader(fileName); string str=sr.ReadLine (); sr.close();
  StreamWriterrw=File.CreateText(Server.MapPath(".")+"\myText.txt");
  rw.WriteLine("写入");
  rw.WriteLine("abc");
  rw.WriteLine(".NET笔记");
  rw.Flush();
  rw.Close();
  //打开文本文件
  StreamReadersr=File.OpenText(Server.MapPath(".")+"\myText.txt");
  StringBuilderoutput=newStringBuilder();
  stringrl;
  while((rl=sr.ReadLine())!=null)
  ...{
  output.Append(rl+"");
  }
  lblFile.Text=output.ToString();
  sr.Close();
  //C#追加文件
  StreamWritersw=File.AppendText(Server.MapPath(".")+"\myText.txt");
  sw.WriteLine("追逐理想");
  sw.WriteLine("kzlll");
  sw.WriteLine(".NET笔记");
  sw.Flush();
  sw.Close();
  //C#拷贝文件
  stringOrignFile,NewFile;
  OrignFile=Server.MapPath(".")+"\myText.txt";
  NewFile=Server.MapPath(".")+"\myTextCopy.txt";
  File.Copy(OrignFile,NewFile,true);
  //C#删除文件
  stringdelFile=Server.MapPath(".")+"\myTextCopy.txt";
  File.Delete(delFile);
  //C#移动文件
  stringOrignFile,NewFile;
  OrignFile=Server.MapPath(".")+"\myText.txt";
  NewFile=Server.MapPath(".")+"\myTextCopy.txt";
  File.Move(OrignFile,NewFile);
  //C#创建目录
  //创建目录c:sixAge
  DirectoryInfod=Directory.CreateDirectory("c:\sixAge");
  //d1指向c:sixAgesixAge1
  DirectoryInfod1=d.CreateSubdirectory("sixAge1");
  //d2指向c:sixAgesixAge1sixAge1_1
  DirectoryInfod2=d1.CreateSubdirectory("sixAge1_1");
  //将当前目录设为c:sixAge
  Directory.SetCurrentDirectory("c:\sixAge");
  //创建目录c:sixAgesixAge2
  Directory.CreateDirectory("sixAge2");
  //创建目录c:sixAgesixAge2sixAge2_1
  Directory.CreateDirectory("sixAge2\sixAge2_1");

 

    StreamReader sr = new StreamReader(fileName,Encoding.GetEncoding("gb2312"));

posted @ 2009-08-18 16:05  oraclejava  阅读(284)  评论(0)    收藏  举报