Author:David Euler Date: 2004/11/16 Email:[email protected] 有任何问题,请与我联系:)
按行读写文件 判断文件是否存在:File.Exists(string filePath) 判断目录是否存在:Directory.Exists("D:\\LastestVersion")
按行读取文件: int fileCount=0; // Open the file just specified such that no one else can use it. StreamReader sr = new StreamReader(textBox1.Text.Trim()); while(sr.Peek() > -1)//StreamReader.Peek()返回下一个可用字符,但不使用它 { listBox1.Items.Add(sr.ReadLine()); fileCount++; } sr.Close();
按行写入文件: StreamWriter sw = new StreamWriter("D:\\result.txt"); for(int i=0;i<10;i++) { sw.WriteLine("这是第"+i.ToString()+"行数据"); }
文件目录对话框的使用 文件对话框即过滤条件的使用: string resultFile=""; OpenFileDialog openFileDialog1 = new OpenFileDialog(); openFileDialog1.InitialDirectory = "D:\\Patch" ; openFileDialog1.Filter = "All files (*.*)|*.*|txt files (*.txt)|*.txt" ; openFileDialog1.FilterIndex = 2 ; openFileDialog1.RestoreDirectory = true ; if(openFileDialog1.ShowDialog() == DialogResult.OK) resultFile=openFileDialog1.FileName;
目录对话框的使用: string resultFolder=""; FolderBrowserDialog openFolderDialog1=new FolderBrowserDialog(); openFolderDialog1.RootFolder=Environment.SpecialFolder.MyComputer; if(openFolderDialog1.ShowDialog()==DialogResult.OK) resultFolder=openFolderDialog1.SelectedPath; 
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