Problem reading text file using Textreader

Question

3.33/5 (3 votes)

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This piece of code directly pasted on cs file,

C#

using System;
using System.IO;

namespace csharp_station.howto
{
    class TextFileReader
    {
        static void Main(string[] args)
        {
            // create reader & open file
            TextReader tr = new StreamReader("date.txt");

            // read a line of text
            Console.WriteLine(tr.ReadLine());

            // close the stream
            tr.Close();
        }
    }
}

give me one of those errors 'type or reference textreader not found, missing directive or reference'.

I noticed that in solution explorer, System.IO is not present on References. how could I add it? Yes, I'm a noob working with VS...

What could be the problem?

Posted 23-May-11 5:19am

Maxdd 7

Updated 23-May-11 6:12am

v2

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2 solutions

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Accepted Answer · 2011-05-23T05:30:00

Solution 1

Replace

C#

Textreader tr = new StreamReader("date.txt");

with

C#

StreamReader tr = new StreamReader("date.txt");

By the way, there no situations when hard-code file names should be used, neither absolute no relative paths. Do you know that this code depends on the working directory which depends on how the user runs your application?
All paths should be calculated during run time based on your entry assembly location of some configuration file data. Alternatively, you get file paths form the user via file dialogs.

—SA

Posted 23-May-11 5:30am

Sergey Alexandrovich Kryukov

Updated 23-May-11 5:32am

v2

Comments

Maxdd 7 23-May-11 11:36am

It was just for testing :) Thanks.

Sergey Alexandrovich Kryukov 23-May-11 12:07pm

Good that you understand it. :-)
Thanks for accepting this answer.
Good luck,
--SA

ambarishtv 23-May-11 11:42am

both of them are working!!! please see my solution

Sergey Alexandrovich Kryukov 23-May-11 12:06pm

Your solution is essentially the same. Yes, of course, it should work, too.
--SA

Maxdd 7 23-May-11 12:13pm

Yes it's true, thank you both.

Sergey Alexandrovich Kryukov 23-May-11 12:54pm

You're very welcome.
Thank you for accepting these answers.
Good luck, call again.
--SA

ambarishtv · Accepted Answer · 2011-05-23T05:32:00

Solution 2

Its working ,try this code :)

C#

try
{
    string line = null;
    System.IO.TextReader readFile = new StreamReader("C:\\date.txt");
    line = readFile.ReadToEnd();
    Console.WriteLine(line);
    Console.ReadLine();
    readFile.Close();
    readFile = null;
}
catch (IOException ex)
{
    Console.WriteLine(ex.Message);
    Console.ReadLine();
}

Posted 23-May-11 5:32am

ambarishtv

Updated 23-May-11 5:38am

v4

Comments

Maxdd 7 23-May-11 11:36am

I already tried that :)

ambarishtv 23-May-11 11:56am

Replace Textreader with TextReader

Sergey Alexandrovich Kryukov 23-May-11 12:07pm

Sure, you spotted this as I did, probably at the same time, a 5.
--SA

ambarishtv 23-May-11 12:09pm

Thank you

Maxdd 7 23-May-11 12:12pm

Thank you!

Problem reading text file using Textreader

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Problem reading text file using Textreader

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