public ObservableCollection <SalesByDate> GetSalesDetailsByDay(int days)
        {
            var collection = new ObservableCollection <SalesByDate>();
            var r          = new Random();

            for (var i = 0; i < days; i++)
            {
                var dt = DateTime.Now;
                foreach (var person in _salesParsonNames)
                {
                    if (r.Next(0, 3) == 0)
                    {
                        continue;
                    }
                    var s = new SalesByDate {
                        Name = person,
                        QS1  = r.Next(100000, 1000000) * 0.01,
                        QS2  = r.Next(100000, 1000000) * 0.01,
                        QS3  = r.Next(100000, 1000000) * 0.01,
                        QS4  = r.Next(100000, 1000000) * 0.01,
                    };
                    s.Total = s.QS1 + s.QS2 + s.QS3 + s.QS4;
                    s.Date  = dt.AddDays(-1 * i);
                    collection.Add(s);
                }
            }
            return(collection);
        }
		public ObservableCollection<SalesByDate> GetSalesDetailsByDay(int days)
		{
			var collection = new ObservableCollection<SalesByDate>();
			var r = new Random();
			for (var i = 0; i < days; i++) {
				var dt = DateTime.Now;
				var s = new SalesByDate {
					Name = _salesParsonNames [r.Next (5)],
					QS1 = i,
                    QS2 = (i < 30 ? 100 : 1000 - i) * (i + 1),
				};
				s.Total = s.QS1 + s.QS2;
				s.Date = dt.AddDays(-1*i);
				collection.Add(s);
			}
			return collection;
		}
        public ObservableCollection <SalesByDate> GetSalesDetailsByDay(int days)
        {
            var collection = new ObservableCollection <SalesByDate>();
            var r          = new Random();

            for (var i = 0; i < days; i++)
            {
                var dt = DateTime.Now;
                var s  = new SalesByDate {
                    Name = _salesParsonNames [r.Next(5)],
                    QS1  = i,
                    QS2  = (i < 30 ? 100 : 1000 - i) * (i + 1),
                };
                s.Total = s.QS1 + s.QS2;
                s.Date  = dt.AddDays(-1 * i);
                collection.Add(s);
            }
            return(collection);
        }
		public ObservableCollection<SalesByDate> GetSalesDetailsByDay(int days)
		{
			var collection = new ObservableCollection<SalesByDate>();
			var r = new Random();
			for (var i = 0; i < days; i++) {
				var dt = DateTime.Now;
				foreach (var person in _salesParsonNames) {
					if (r.Next(0, 3) == 0) continue;
					var s = new SalesByDate {
						Name = person,
						QS1 = r.Next(100000, 1000000) * 0.01,
						QS2 = r.Next(100000, 1000000) * 0.01,
						QS3 = r.Next(100000, 1000000) * 0.01,
						QS4 = r.Next(100000, 1000000) * 0.01,
					};
					s.Total = s.QS1 + s.QS2 + s.QS3 + s.QS4;
					s.Date = dt.AddDays(-1*i);
					collection.Add(s);
				}
			}
			return collection;
		}