private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
PrimesInput input = (PrimesInput)e.Argument;
int[] primes = Worker.FindPrimes(input, backgroundWorker);
if (backgroundWorker.CancellationPending)
{
e.Cancel = true;
return;
}
e.Result = primes;
}
private void bSubmit_Click(object sender, RoutedEventArgs e)
{
bSubmit.IsEnabled = false;
bCancel.IsEnabled = true;
Result.Items.Clear();
int from, to;
try
{
from = Int32.Parse(From.Text.Trim());
to = Int32.Parse(To.Text.Trim());
}
catch (Exception ex)
{
MessageBox.Show("В полях для ввода некорректные значения");
return;
}
PrimesInput input = new PrimesInput(from, to);
backgroundWorker.RunWorkerAsync(input);
}
static public int[] FindPrimes(PrimesInput input, BackgroundWorker backgroundWorker)
{
int num = input.from;
int[] arr = new int[input.to - input.from];
int iteration = arr.Length / 100;
for (int i = 0; i < arr.Length; i++)
{
arr[i] = num;
num++;
}
int maxDiv = (int)Math.Floor(Math.Sqrt(input.to));
int[] marks = new int[arr.Length];
for (int i = 0; i < arr.Length; i++)
{
for (int j = 2; j <= maxDiv; j++)
{
if ((arr[i] != j) && (arr[i] % j == 0))
{
marks[i] = 1;
}
}
if ((i % iteration == 0) && (backgroundWorker != null))
{
if (backgroundWorker.CancellationPending)
{
return(null);
}
if (backgroundWorker.WorkerReportsProgress)
{
backgroundWorker.ReportProgress(i / iteration);
}
}
}
int primes = 0;
for (int i = 0; i < marks.Length; i++)
{
if (marks[i] == 0)
{
primes++;
}
}
int[] ret = new int[primes];
int curs = 0;
for (int i = 0; i < marks.Length; i++)
{
if (marks[i] == 0)
{
ret[curs] = arr[i];
curs++;
}
}
if (backgroundWorker != null && backgroundWorker.WorkerReportsProgress)
{
backgroundWorker.ReportProgress(100);
}
return(ret);
}
static public int[] FindPrimes(PrimesInput input)
{
return(FindPrimes(input, null));
}
