private async void CalculateButton_Click(object sender, EventArgs e)
{
_source = new CancellationTokenSource();
CancellationToken token = _source.Token;
if ((FromTextBox.Text != "") && (ToTextBox.Text != ""))
{
CalculateButton.Enabled = false;
CancelButton.Enabled = true;
var countPrimes = await PrimeFinder.CountPrimesAsync(int.Parse(FromTextBox.Text), int.Parse(ToTextBox.Text),
token.WaitHandle);
CountLabel.Text = string.Format($"Number of primes in range: {countPrimes}.");
if (SaveLocationTextBox.Text != "")
{
var saveLocation = string.Format(SaveLocationTextBox.Text + ".txt");
using (var writer = new StreamWriter(saveLocation, true))
{
writer.WriteLine($"Calculation done on: {DateTime.Now}. Number of primes in range {FromTextBox.Text} to {ToTextBox.Text}: {countPrimes}.");
}
SaveLocationTextBox.Text = string.Format($"Calculation saved to file: \"{saveLocation}\"");
}
CancelButton.Enabled = false;
CalculateButton.Enabled = true;
_source.Dispose();
}
}
/// <summary>
/// Returns an integer counting the number of prime numbers between input 1 and input 2 of user.
/// </summary>
/// <param name="input1"></param>
/// <param name="input2"></param>
/// <param name="waitHandle"></param>
/// <returns></returns>
public static int CountPrimes(int input1, int input2, WaitHandle waitHandle)
{
var primeList = new ArrayList();
for (var i = Math.Min(input1, input2); i <= Math.Max(input1, input2); i++)
{
if (waitHandle != null)
{
if (waitHandle.WaitOne(0))
{
break;
}
}
if (PrimeFinder.CheckPrime(i))
{
primeList.Add(i);
}
}
return(primeList.Count);
}
private void CalculateButton_Click(object sender, EventArgs e)
{
_source = new CancellationTokenSource();
CancellationToken token = _source.Token;
Task.Run(() =>
{
if ((FromTextBox.Text != "") && (ToTextBox.Text != ""))
{
CalculateButton.Enabled = false;
CancelButton.Enabled = true;
var resultingPrimes = PrimeFinder.CalcPrimes(int.Parse(FromTextBox.Text), int.Parse(ToTextBox.Text), token.WaitHandle);
ResultListBox.DataSource = resultingPrimes;
CancelButton.Enabled = false;
CalculateButton.Enabled = true;
_source.Dispose();
}
}, token);
}
