// Constructor that reads prime numbers from file and initializes list.
public PrimeNumber(string fileName = null)
{
_numbers = new int [SIZE];
_random = new Random();
var fileOperation = new FileOperation();
fileOperation.FileName = fileName ?? SOURCE;
IEnumerable <string> numbers = fileOperation.Read();
int index = 0;
// If file reading failed.
if (numbers == null)
{
Console.WriteLine("Unable to read prime numbers from file. Terminating program.");
// Exit program.
Environment.Exit(1);
}
// If file reading succeeded.
else
{
// Initialize list with prime numbers.
foreach (var number in numbers)
{
_numbers[index++] = int.Parse(number);
}
}
}
// Invoked on "Browse" button clicked.
private void FileDialogClicked(object sender, System.EventArgs e)
{
var fileDialog = new OpenFileDialog();
string fileName;
if (fileDialog.ShowDialog() == DialogResult.OK)
{
fileName = fileDialog.FileName;
if (!fileName.EndsWith(EXTENSION, true, new CultureInfo("en-US")))
{
Status("Please select a valid text file");
}
else
{
Status("File processed");
// Set file name.
_fileOperation.FileName = fileName;
// Read from file.
_fileOperation.Read();
// Display file content.
_plainTextBox.Text = _fileOperation.Content;
}
}
}
