System.IO.FileNotFoundException: Can't Find File

Question

I am getting the error:

Could not find file 'C:\\Program Files (x86)\\IIS Express\\Cobb_County_Traffic_Counts.csv'.'

My file is in the main project file (as shown below), so I don't know how it cannot be found.

Here is the code I am running in entirety:

 private const string Path = (@"Cobb_County_Traffic_Counts.csv");

protected void Page_Load(object sender, EventArgs e)
{
    loadCSV(sender, e);
}

    protected void loadCSV(object sender, EventArgs e)
{
    List<String[]> fileContent = new List<string[]>();

    using (StreamReader reader = new StreamReader(Path)) // mind the encoding - UTF8
    using (TextFieldParser parser = new TextFieldParser(reader))
    {
        parser.TrimWhiteSpace = true; // if you want
        parser.Delimiters = new[] { "," };
        parser.HasFieldsEnclosedInQuotes = true;

        while (!parser.EndOfData)
        {
            string[] line = parser.ReadFields();
            fileContent.Add(line);
            Console.WriteLine(line);
        }
    }

}

Answer 1

Please use Server.MapPath() to get the actual path. You are resolving the file to IIS installation directory because it is a relative path to where IIS express executable is running from.

    List<String[]> fileContent = new List<string[]>();

    using (StreamReader reader = new StreamReader(Server.MapPath("~/" + Path))) // mind the encoding - UTF8
    using (TextFieldParser parser = new TextFieldParser(reader))
    {
        parser.TrimWhiteSpace = true; // if you want
        parser.Delimiters = new[] { "," };
        parser.HasFieldsEnclosedInQuotes = true;

        while (!parser.EndOfData)
        {
            string[] line = parser.ReadFields();
            fileContent.Add(line);
            Console.WriteLine(line);
        }
    }
}