GetDateTimesBetweenInclusive() public static method

Returns a sequence of date time values from a start and end date time inclusive.
public static GetDateTimesBetweenInclusive ( DateTime start, DateTime end, long count ) : IEnumerable
start DateTime The start date time.
end DateTime The end date time.
count long The number of values to return.
return IEnumerable
ValueHelper Class Documentation
Exemplo n.º 1
0
        private static Storyboard CreateStoryboard(
            FrameworkElement target,
            DependencyProperty animatingDependencyProperty,
            string propertyPath,
            ref object toValue,
            TimeSpan durationTimeSpan,
            EasingFunctionBase easingFunction)
        {
            object fromValue = target.GetValue(animatingDependencyProperty);

            double fromDoubleValue;
            double toDoubleValue;

            DateTime fromDateTime;
            DateTime toDateTime;

            Storyboard storyBoard = new Storyboard();

            Storyboard.SetTarget(storyBoard, target);

            Storyboard.SetTargetProperty(storyBoard, propertyPath);

            if ((fromValue != null && toValue != null))
            {
                if (ValueHelper.TryConvert(fromValue, out fromDoubleValue) && ValueHelper.TryConvert(toValue, out toDoubleValue))
                {
                    DoubleAnimation doubleAnimation = new DoubleAnimation();
                    doubleAnimation.EnableDependentAnimation = true;
#if !NO_EASING_FUNCTIONS
                    doubleAnimation.EasingFunction = easingFunction;
#endif
                    doubleAnimation.Duration = durationTimeSpan;
                    doubleAnimation.To       = ValueHelper.ToDouble(toValue);
                    toValue = doubleAnimation.To;

                    storyBoard.Children.Add(doubleAnimation);
                }
                else if (ValueHelper.TryConvert(fromValue, out fromDateTime) && ValueHelper.TryConvert(toValue, out toDateTime))
                {
                    ObjectAnimationUsingKeyFrames keyFrameAnimation = new ObjectAnimationUsingKeyFrames();
                    keyFrameAnimation.EnableDependentAnimation = true;
                    keyFrameAnimation.Duration = durationTimeSpan;

                    long intervals = (long)(durationTimeSpan.TotalSeconds * KeyFramesPerSecond);
                    if (intervals < 2L)
                    {
                        intervals = 2L;
                    }

                    IEnumerable <TimeSpan> timeSpanIntervals =
                        ValueHelper.GetTimeSpanIntervalsInclusive(durationTimeSpan, intervals);

                    IEnumerable <DateTime> dateTimeIntervals =
                        ValueHelper.GetDateTimesBetweenInclusive(fromDateTime, toDateTime, intervals);

                    IEnumerable <DiscreteObjectKeyFrame> keyFrames =
                        EnumerableFunctions.Zip(
                            dateTimeIntervals,
                            timeSpanIntervals,
                            (dateTime, timeSpan) => new DiscreteObjectKeyFrame()
                    {
                        Value = dateTime, KeyTime = timeSpan
                    });

                    foreach (DiscreteObjectKeyFrame keyFrame in keyFrames)
                    {
                        keyFrameAnimation.KeyFrames.Add(keyFrame);
                        toValue = keyFrame.Value;
                    }

                    storyBoard.Children.Add(keyFrameAnimation);
                }
            }

            if (storyBoard.Children.Count == 0)
            {
                ObjectAnimationUsingKeyFrames keyFrameAnimation = new ObjectAnimationUsingKeyFrames();
                keyFrameAnimation.EnableDependentAnimation = true;
                DiscreteObjectKeyFrame endFrame = new DiscreteObjectKeyFrame()
                {
                    Value = toValue, KeyTime = new TimeSpan(0, 0, 0)
                };
                keyFrameAnimation.KeyFrames.Add(endFrame);

                storyBoard.Children.Add(keyFrameAnimation);
            }

            return(storyBoard);
        }