Read a text file and write it out to the Console. - CSharp File IO

CSharp examples for File IO:Text File

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Description

Read a text file and write it out to the Console.

Demo Code

using System;/*from  w  ww . j a v a 2  s.c  om*/
using System.IO;
public class Program
{
   public static void Main(string[] args)
   {
      StreamReader sr = null;
      string fileName = "";
      try
      {
         sr = GetReaderForFile(fileName);
         ReadFileToConsole(sr);
      }
      catch (IOException ioErr)
      {
         Console.WriteLine("{0}\n\n", ioErr.Message);
      }
      finally
      {
         if (sr != null)
         {
            sr.Close();
            sr = null;
         }
      }
   }
   private static StreamReader GetReaderForFile(string fileName)
   {
      StreamReader sr;
      Console.Write("Enter the name of a text file to read:");
      fileName = Console.ReadLine();
      if (fileName.Length == 0)
      {
         throw new IOException("You need to enter a filename.");
      }
      FileStream fs = File.Open(fileName, FileMode.Open, FileAccess.Read);
      sr = new StreamReader(fs, true);
      return sr;
   }
   private static void ReadFileToConsole(StreamReader sr)
   {
      while (true)
      {
         string input = sr.ReadLine();
         if (input == null)
         {
            break;
         }
         Console.WriteLine(input);
      }
   }
}

Result


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