/// <summary>
/// The calculate/cancel button event
/// </summary>
/// <param name="sender">Reference to the object that raised the event</param>
/// <param name="e">Provides data for a cancelable event</param>
private void _calcButton_Click(object sender, EventArgs e)
{
if (this._calcButton.Text == "Calculate")
{
timer1.Start();
// Just a simple object to hold some values to be accessed globally
pi = new PiObject
{
calcValue = "",
digits = (int)_digits.Value,
progress = 0
};
backgroundWorker1.RunWorkerAsync(pi);
progressBar1.Maximum = pi.digits;
_calcButton.Text = "Cancel";
}
else
{
timer1.Stop();
backgroundWorker1.CancelAsync();
_calcButton.Text = "Calculate";
}
}
/// <summary>
/// Our main worker thread. This is the main loop that calculates Pi
/// </summary>
/// <param name="sender">Reference to the object that raised the event</param>
/// <param name="e">Provides data for a cancelable event</param>
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
PiObject piObj = e.Argument as PiObject;
BackgroundWorker bw = sender as BackgroundWorker;
StringBuilder pi = new StringBuilder("3", piObj.digits + 2);
if (piObj.digits > 0)
{
pi.Append(".");
for (int i = 0; i < piObj.digits; i += 9)
{
if (!this.backgroundWorker1.CancellationPending)
{
int nineDigits = NineDigitsofPi.StartingAt(i + 1);
int digitCount = Math.Min(piObj.digits - i, 9);
String ds = String.Format("{0:D9}", nineDigits);
pi.Append(ds.Substring(0, digitCount));
piObj.calcValue = pi.ToString();
piObj.progress = i + 1;
}
else
{
e.Cancel = true;
}
}
}
}
/// <summary>
/// The calculate/cancel button event
/// </summary>
/// <param name="sender">Reference to the object that raised the event</param>
/// <param name="e">Provides data for a cancelable event</param>
private void _calcButton_Click(object sender, EventArgs e)
{
if (this._calcButton.Text == "Calculate")
{
timer1.Start();
// Just a simple object to hold some values to be accessed globally
pi = new PiObject
{
calcValue = "",
digits = (int)_digits.Value,
progress = 0
};
backgroundWorker1.RunWorkerAsync(pi);
progressBar1.Maximum = pi.digits;
_calcButton.Text = "Cancel";
}
else
{
timer1.Stop();
backgroundWorker1.CancelAsync();
_calcButton.Text = "Calculate";
}
}
