Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Reading in data from a file C#

Posted on 2006-11-28
2
346 Views
Last Modified: 2010-04-16
if i have a file such as:
in.txt
6 1 2 3 4 5 6
9 1 2 3 4 5 6 7 8 9
5 1 2 3 4 5
7 1 2 3 4 5 6 7

where the first number listed tells how many numbers are after it.  How do i write code so that i can read that in.  Normally i would do:

public static void ReadData()
            {
                  string fileName = "in.txt";

                  StreamReader fileReader = new StreamReader(fileName);

                  string sLine;

                  sLine = fileReader.ReadLine();

                  string[] split;
                  char delm = ' ';

                  while(sLine != null)
                  {
                        split = sLine.Split(delm);

      
                        
                        sLine = fileReader.ReadLine();
                  }
0
Comment
Question by:jmkotman
2 Comments
 
LVL 14

Accepted Solution

by:
nayernaguib earned 500 total points
ID: 18029565
This will store and print the contents of each line in a string array. If you don't need the first element, you can simply skip it while processing the array.

public static void ReadData()
{
      string fileName = "in.txt";
      StreamReader fileReader = new StreamReader(fileName);
      string sLine;
      string[] values;

      sLine = fileReader.ReadLine();
      char delm = ' ';

      while(sLine != null)
      {
            values = sLine.Split(delm);
            for(int i=0; i<values.Length; i++)
                  Console.Write(values[i]+" ");
            Console.WriteLine();
                   
            sLine = fileReader.ReadLine();
      }
}

_______________

  Nayer Naguib
0
 
LVL 16

Expert Comment

by:AlexNek
ID: 18031915
I like solution with split but if you need to use an other one, then scan the sting yourself.
Hint -  sLine[i] but don't forget to check if the string lenght is enough for number count
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is meant to give a basic understanding of how to use R Sweave as a way to merge LaTeX and R code seamlessly into one presentable document.
Whether you’re a college noob or a soon-to-be pro, these tips are sure to help you in your journey to becoming a programming ninja and stand out from the crowd.
With the power of JIRA, there's an unlimited number of ways you can customize it, use it and benefit from it. With that in mind, there's bound to be things that I wasn't able to cover in this course. With this summary we'll look at some places to go…
In this seventh video of the Xpdf series, we discuss and demonstrate the PDFfonts utility, which lists all the fonts used in a PDF file. It does this via a command line interface, making it suitable for use in programs, scripts, batch files — any pl…

829 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question