public void UpdateProgress(int current, int total, TimeKeeper timekeeper)
{
_TotalCount = total;
_Current = current;
timekeeper.RecordTime();
if (current > 100 && current < total)
{
var sum = (DateTime.Now - timekeeper.BeginTaskDatetime.Value);
var avgMilliseconds = sum.TotalMilliseconds / current;
var remain = total - current;
var remainTimesAvgMilliseconds = remain * avgMilliseconds;
var now = DateTime.Now;
if (_previousUpdateDateTime.HasValue)
{
var duration = now - _previousUpdateDateTime.Value;
if (duration.Seconds >= 1)
{
EstimateRemainTime = TimeSpan.FromMilliseconds(remainTimesAvgMilliseconds);
_previousUpdateDateTime = now;
}
}
else
{
_previousUpdateDateTime = now;
}
}
else if (current == total)
{
EstimateRemainTime = null;
_previousUpdateDateTime = null;
}
RaisePropertyChanged(PropertyNameUtility.GetPropertyName(() => Current));
RaisePropertyChanged(PropertyNameUtility.GetPropertyName(() => Progress));
RaisePropertyChanged(PropertyNameUtility.GetPropertyName(() => EstimateRemainTime));
}