Programming Languages for MIS

127

C#.net

51 {

52 Console.WriteLine("The input file #2 does not exist!");

53 FailureFlag = 1;

54 }

55 OutputFile.Close(); // Close the output file

56 if (FailureFlag == 0)

57 Console.WriteLine("Two files have been merged into output file!");

58 else

59 Console.WriteLine("The operation failed due to incorrect files!");

60 }

61 }

62 }

For file processing, the program needs to import the System.IO namespace, as

shown in line 5 of Listing5.7. Four classes are required for file processing in C#, as

shown in Listing5.7 and discussed next:

1. e StreamWriter (line 17) and StreamReader (line 26) classes rep-

resent the files for writing and reading, respectively. e WriteLine()

method of StreamWriter (lines 34 and 47) writes a line to the file. e

ReadLine()