Win8 C# 对象排序---通过某个属性

List<tb_History> histories;

histories = new List<tb_History>();

var temps = HistoryManager.getHistoriesByPrifileId(selected_Profile.id);

foreach (var temp in temps)            {                histories.Add(temp);            }

if (histories.Count <= 0)            {                ClearAllLabels();                return;            }

// 首先 按照 Sys排序            histories.Sort(new ComparableHistorySys());            int sys_min = histories[0].systolic;            int sys_max = histories[histories.Count - 1].systolic;

// 排序方法，默认从小到大排序    public class ComparableHistorySys : IComparer<tb_History>    {        public int Compare(tb_History x, tb_History y)        {            return x.systolic.CompareTo(y.systolic);        }    }