CODEWITHSUNDEEP
c#filefile-io
Dabiddo
Dabiddo

Reputation: 351

Read a text file from local folder

I want to read a text file from my local directory, I added the text file to my c# solution, so it would get copied at deployment.. but how do i open it? I've been searching but all the examples assume I have a C:\textfile.txt:

I tried just reading the file 

if (File.Exists("testfile.txt"))
{
   return true;
}

That didn't work. Then I tried:

if (File.Exists(@"\\TextConsole\testfile.txt"))
{
   return true;
}

but still wont open it.. any ideas??

Upvotes: 18

Views: 113036

Answers (5)

CPHPython
CPHPython

Reputation: 13759

As Bobby mentioned in a comment, using a simple PathCombine in the current folder worked for me:

string txtPath = Path.Combine(Environment.CurrentDirectory, "testfile.txt")

Upvotes: 1

Stan R.
Stan R.

Reputation: 16065

Just because you added it to your solution doesn't mean the file gets placed into your output Build directory. If you want to use relative path, make sure your TextFile is copied during build to the output directory. To do this, in solution explorer go to properties of the text file and set Copy to Output Directory to Always or Copy if newer

Then you can use

File.Open("textfile.txt");

Upvotes: 38

Asad
Asad

Reputation: 21938

you need to use one of the following after the check you have made

 string path = @"\\TextConsole\testfile.txt";
 if (File.Exists(path))
 {
  FileStream fileStream = File.OpenRead(path); // or
  TextReader textReader = File.OpenText(path); // or
  StreamReader sreamReader = new StreamReader(path);
 }

Upvotes: 7

Kamruzzaman
Kamruzzaman

Reputation: 1443

This example reads the contents of a text file, one line at a time, into a string using the ReadLine method of the StreamReader class. Each text line is stored into the string line and displayed on the screen.

  int counter = 0;
  string line;

// Read the file and display it line by line.
System.IO.StreamReader file =  new System.IO.StreamReader("c:\\test.txt");

while((line = file.ReadLine()) != null)
{
   Console.WriteLine (line);
   counter++;
}

file.Close();

// Suspend the screen.
Console.ReadLine();

reference http://msdn.microsoft.com/en-us/library/aa287535%28v=vs.71%29.aspx

Upvotes: 2

Oded
Oded

Reputation: 499312

If the file is indeed in c:\textfile.txt, you can find it like this:

if (File.Exists(@"c:\testfile.txt"))
{
   return true;
}

But you should use Path.Combine to build a nested file path and DriveInfo to work with drive details.

Upvotes: 0

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