private void DrawStatistic() { string[] seriesArray = { "Right answers", "Wrong answers", "Cancelled answers" }; var points = _statisticService.GetAnswersCount(dateTimePickerFromDate.Value.Date, dateTimePickerToDate.Value.Date); var pointsArray = new [] { points.Item1, points.Item2, points.Item3 }; chart1.Palette = ChartColorPalette.SeaGreen; chart1.Series.Clear(); chart1.ChartAreas[0].AxisX.MajorGrid.LineWidth = 0; for (var i = 0; i < seriesArray.Length; i++) { var series = chart1.Series.Add(seriesArray[i]); series.Points.Add(pointsArray[i]); chart1.Series[i].IsValueShownAsLabel = true; } }