How to use readlines method in .net framework 3.5

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I have the following code where I am having error in File.ReadLines in .net framework 3.5.

I am not able to use File.readAlllines as after giving this the error comes in File.WriteAlllines method

Please suggest

C#

string Activestorelist = @"C:\Activestores_default.txt";
var file1 = File.ReadLines(Activestorelist);
var file2 = File.ReadAllLines(savePath);
var onlyInFileA = file1.Except(file2);
File.WriteAllLines(savePath, onlyInFileA);

Posted 15-Feb-14 12:17pm

DEbopm

Updated 15-Feb-14 12:26pm

Nelek

v2

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Homero Rivera 15-Feb-14 18:36pm

Paste all exception info available.

DEbopm 15-Feb-14 18:56pm

var file1=File.Readlines(Activestorelist),

File.Readlines is not supported in 3.5 . How to use it here ???

1 solution

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Homero Rivera · Answer 1 · 2014-02-15T13:10:00

Solution 1

In good ol' 3.5 you can only use Read, ReadLine or WriteLine

C#

using System.IO;

...

StreamReader file = new StreamReader(@"C:\Activestores_default.txt");


string line;

while((line = file.ReadLine()) != null)
{
   // your code here...
}

You also need to use StreamReader from System.IO library.

Source
http://msdn.microsoft.com/en-us/library/aa287535(v=vs.71).aspx[^]

Posted 15-Feb-14 13:10pm

Homero Rivera

Updated 15-Feb-14 13:25pm

v3

Comments

DEbopm 15-Feb-14 20:15pm

should I give the full code inside the while loop ..?? or how to put it here ??? please let me know

string Activestorelist = @"C:\Activestores_default.txt";
var file1 = File.ReadLines(Activestorelist);
var file2 = File.ReadAllLines(savePath);
var onlyInFileA = file1.Except(file2);
File.WriteAllLines(savePath, onlyInFileA);

Homero Rivera 15-Feb-14 20:23pm

What are you trying to do with the lines you are reading? where are you trying to put all that text?

That way maybe I can complete this.

DEbopm 15-Feb-14 20:28pm

I want to read first and then I want to write the contents which are in file 1 but not in file 2 . Then I will overwrite the savepath . How to do yhis using streamreader

DEbopm 15-Feb-14 21:22pm

hi any input ?????