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Posted By

pckujawa on 07/25/08


Tagged

file streamReader fileIO fileManipulation appData


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File manipulation, opening, and closing using a streamreader and the system application data folder

Published in: C# 

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  1. private string appDataFolder = System.Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
  2. private FileStream defaultFile;
  3. private void openDataFile()
  4. {
  5.     string myFolder = appDataFolder + "\\MyFolder";
  6.     // check if the default file exists and use its data
  7.     try 
  8.     { 
  9.     	defaultFile = new FileStream(myFolder + "defaults.ini", FileMode.Open); 
  10.     }
  11.     catch (Exception)
  12.     {
  13.         try 
  14.         {
  15.             Directory.CreateDirectory(myFolder);
  16.             defaultFile = new FileStream(myFolder + "defaults.ini", FileMode.Create); 
  17.         }
  18.         catch (System.IO.IOException)
  19.         {
  20.             //// if not, try to open a file with default data
  21.             //OpenFileDialog myDlg = new OpenFileDialog();
  22.             //myDlg.Filter = "INI Files (*.INI)|*.INI|All Files (*.*)|*.*||";
  23.             //myDlg.InitialDirectory = appDataFolder;
  24.             //if (myDlg.ShowDialog() == DialogResult.OK)
  25.             //{
  26.             //    defaultFile = new FileStream(myDlg.FileName, FileMode.Open);
  27.             //}
  28.         }
  29.     }
  30. }
  31. private void readDataFile()
  32. {
  33.     try
  34.     {
  35.         StreamReader sr = new StreamReader(defaultFile);
  36.         string lines = sr.ReadLine();
  37.         while (!sr.EndOfStream)
  38.         {
  39.             lines += sr.ReadLine();
  40.         }
  41.         sr.Close();
  42.     }
  43.     catch (Exception) { return; }
  44. }
  45. private void saveData()
  46. {
  47.     openDataFile();
  48.     try
  49.     {
  50.         StreamWriter sw = new StreamWriter(defaultFile);
  51.         sw.WriteLine("text");
  52.         sw.Close();
  53.     }
  54.     catch (Exception) { }
  55. }

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