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Jun 19th, 2019
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  1. // This section shows how to read a file called Sample.txt stored in the Debug folder of the program folder
  2. string fileName = @"Sample.TXT";
  3. Console.WriteLine("The contents of the file {0} is:", fileName);
  4.  
  5. string[] dataFromFile = new string[100];
  6. int index = 0;
  7.  
  8. System.IO.StreamReader streamReader = new System.IO.StreamReader(fileName);
  9. using (streamReader)
  10. {
  11. string fileContents = streamReader.ReadToEnd();
  12.  
  13. dataFromFile[index] = fileContents;
  14.  
  15. Console.WriteLine(dataFromFile[index]);
  16. index++;
  17. }
  18.  
  19. Console.WriteLine("Now Line By Line:");
  20. System.IO.StreamReader reader = new System.IO.StreamReader(fileName);
  21. using (reader)
  22. {
  23. int lineNumber = 0;
  24. string line = reader.ReadLine();
  25. while (line != null)
  26. {
  27. lineNumber++;
  28. Console.WriteLine("Line {0}: {1}", lineNumber, line);
  29. line = reader.ReadLine();
  30. }
  31. }
  32.  
  33. // This section shows how to write a file called madeit.txt stored in the console programs debug folder
  34.  
  35. string fileName2 = @"madeit.txt";
  36. System.IO.StreamWriter streamWriter = new System.IO.StreamWriter(fileName2);
  37. using (streamWriter)
  38. {
  39. for (int number = 1; number <= 20; number++)
  40. {
  41. streamWriter.WriteLine("This is line number : " + number);
  42. }
  43. }
  44. Console.WriteLine("File is written!");
  45.  
  46. }
  47. }
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