Comments on: C# Read Text File Line-by-Line

By: carlos

carlos — Mon, 29 Aug 2011 09:58:51 +0000

hi,
i nedd to read each number from a file and save them in a variable;
Exemple File:
10 20 30 40 50 60 70

I have to put values in an anrray for example:
arr[0] = 10
arr[1] = 20
arr[2] = 30
but i cant read only 10 and than only 20, i only can read all line.
Can you help me?

thanks

By: Savonarole

Savonarole — Sun, 14 Aug 2011 15:27:22 +0000

no error but not listed the text file in output console, i’m using visual studio and i think the sample is watching active project folder, i don’t see in console the line i have put in c:temptest.txt, WHAT’S WRONG Please ?

file seem to have been open anyway, but not read, i have put Console.WriteLine(“end”); to test output console

By: Avijit

Avijit — Fri, 24 Jun 2011 10:27:57 +0000

I am sure you can write it, if you know following:
>Reading file line by line
>writing into the file
>Array sorting

Then do the following:

Step 1: read the file line by line and store them into an array (You decide the array length)

Step 2: Sort the array in asc/desc order

step 3: Open the same file in write mode and write array element into the file sequentially

By: max

max — Thu, 16 Jun 2011 07:16:40 +0000

/i want to read a text file line by line which is containing the numbers and reprint the numbers in same text file in sorted manner , do u have any code for that

By: Jon

Jon — Fri, 06 May 2011 01:19:47 +0000

For more easy to understand examples on how to read (and write) from text files in C# check out:
http://programming.flashadventures.com/c-sharp/reading-text-from-files

By: ignaseo

ignaseo — Fri, 08 Apr 2011 10:42:06 +0000

Just for me the best way read the file per bytes array not by line.

By: timm

timm — Thu, 17 Mar 2011 20:11:27 +0000

@abc123: File.ReadAllLines() reads all lines at once, which is handy, but it may not be appropriate for large files or situations where you may only need to read part of a file.

By: abc123

abc123 — Thu, 17 Mar 2011 17:08:28 +0000

This does pretty much the same thing, except it puts the lines into an array.

string[] lines = File.ReadAllLines(@”c:temptest.txt”);

By: marwa

marwa — Mon, 21 Feb 2011 15:32:44 +0000

can any one help plz i need to make a project that browse for location of an excel sheet and read it and then read files names in certain folder and try to match files names with lines in excel sheet and the output is the un found files names

By: timm

timm — Sun, 23 Jan 2011 19:20:47 +0000

@Erlich: StreamReader.ReadLine() doesn’t take any arguments and returns a string.

http://msdn.microsoft.com/en-us/library/system.io.streamreader.readline.aspx