Question

Is it possible to transform following code to Linq that it will look like little bit more nicely

foreach (var entry in bottleneck.Item2)
{
    if(entry.ChangeoverTime > 0)
    {
        avarangechangeOverTimes += entry.ChangeoverTime;
        ++counter;
    }

    if (entry.ChangeoverTime > maxchangeOverTimes)
    {
        maxchangeOverTimes = entry.ChangeoverTime;
    }

    changeovertime.ChangeoverTimes.Add
    (
        new ChangeOverDateValue
        {
            ChangeoverValue = entry.ChangeoverTime,
            Color = ChangeOverTimeToColor(entry.ChangeoverTime),
            StartTime = entry.StartTime
        }
     );
}

Answer 1

If the number of entries in bottleneck.Item2 isn’t huge, you could achieve the same using these three statements:

var maxChangeOverTime = bottleneck.Item2.Max(x => x.ChangeoverTime);
var averageChangeOverTime = bottleneck.Item2.Average(x => x.ChangeoverTime);
var result
    = bottleneck.Item2
                .Select(x => new ChangeOverDateValue
                             {
                                 ChangeoverValue = x.ChangeoverTime,
                                 Color = ChangeOverTimeToColor(x.ChangeoverTime),
                                 StartTime = x.StartTime
                             });
changeovertime.ChangeoverTimes.AddRange(result);

Please note that this will enumerate bottleneck.Item2 three times instead of one time with your current code.