FileNotFoundException unhandled error

Anwar Jabbar

9y888Learn iOS Programming

Dear Friends,

Kindly assist on the below

I am making program in Visual Studio 2008 C# for Windows CE 6 device (datalogic memor).

Trying to read data from a CSV file using below code

using System;

using System.Linq;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.IO;

using System.Windows.Forms;

private void cmdDataRefresh_Click(object sender, EventArgs e)

{

if (!File.Exists(@"d:\\SampleSale.csv"))

{

Console.WriteLine("{0} not exist.");

}

StreamReader reader = new StreamReader(File.OpenRead(@"SampleSale.csv"));

}

But i get an error while running the code at the line StreamReader

Can you help on this? how to specify the file with path and why this error comes up?

Thanks

8 Replies

Know the answer? Post it — somebody with the same question will find it here.

Amit Gupta9y ago
Accepted answer
How suddenly the exception changed from filenot found to directory not found exception? Where you are deploying this code? In windows device then please verify that directory exists. As there was only the problem.
Anwar Jabbar9y ago
Oh. My god. My Goodness.

Thanks Amit. Its working. Thanks a lot

In fact i was trying to debug directly to the windows device but the directory and file was in the laptop.

Much appreciated your patience and support

Thanks once again
Amit Gupta9y ago
If your csv file is with the execution file then try use
File.OpenRead("SampleSale.csv");
Anwar Jabbar9y ago
Thanks Amit.

I think the issue is something else. I am sure the file is present in the location d:\SampleSale.csv.

I have rewritten the codes from the link you provided. But i still get that error.. tried different codes as well. kindly see
Amit Gupta9y ago
As your question belongs to FileNotFoundException, return keyword was used if file wasn"t found it will not execute the rest part of the code.

As your files seems doesnot exists on that location then how can your program reads that file?

Furthermore, check below link for reading csv file
http://stackoverflow.com/questions/5282999/reading-csv-file-and-storing-values-into-an-array
Anwar Jabbar9y ago
Hello Amit

thanks.. if i enter return; the error is not coming any more..
but not going further and not executing the rest of the code

if (!File.Exists(@"d:\\SampleSale.csv"))
{
Console.WriteLine("{0} not exist.");
return;
}
StreamReader reader = new StreamReader(File.OpenRead(@"d:\\SampleSale.csv"));
Console.WriteLine("Hello.. I am inside the file now.. ");
please see above WriteLine.. not printing on the console window

Can you send me full codes on how to read a CSV file row by row and get the data to an array?

thanks al lot
Amit Gupta9y ago
One more thing I want to mention, donot just let post the question, try to find out the silly mistakes, try debug your programs... you will have a deeper knowledge than just posting.
Amit Gupta9y ago
Use return keyword
Console.WriteLine("{0} not exist.");
return;