private void RasterRenderer_ProgressChanged(object sender, OngoingOperation og, double p, ref bool cancel)
{
var per = 100 * decimal.Divide(Convert.ToDecimal(p), 100);
label1.Update();
label1.Text = $@"{per:F2}% completed.";
}
/// <summary>
/// Handle progress change event
/// </summary>
private static void Extractor_ProgressChanged(object sender, OngoingOperation ongoingOperation, double progress, ref bool cancel)
{
drawTextProgressBar(Convert.ToInt32(progress), 100);
}