//获取数据源
            DataSet dataSource = _BLL.GetTongJiData(year);

            chartControl1.Series.Clear();
            chartControl2.Series.Clear();
            chartControl3.Series.Clear();

            foreach (DataRow R in dataSource.Tables[0].Rows)
            {
                dataSource.Tables[1].DefaultView.RowFilter = $"yyyymm='{R["yyyymm"].ToString()}'";
                var source = dataSource.Tables[1].DefaultView.ToTable();

                var series = new Series(R["yyyymm"].ToString(), ViewType.Bar);
                series.DataSource = source;
                series.SetDataMembers("syr", "avgTotal");
                SetView(series);
                chartControl1.Series.Add(series);
                this.chartControl1.Titles[0].Text = year + "年平均每车单子数";

                var series2 = new Series(R["yyyymm"].ToString(), ViewType.Bar);
                series2.DataSource = source;
                series2.SetDataMembers("syr", "total1");
                SetView(series2);
                chartControl2.Series.Add(series2);
                this.chartControl2.Titles[0].Text = year + "年单子数";

                var series3 = new Series(R["yyyymm"].ToString(), ViewType.Bar);
                series3.DataSource = source;
                series3.SetDataMembers("syr", "total2");
                SetView(series3);
                chartControl3.Series.Add(series3);
                this.chartControl2.Titles[0].Text = year + "年车数";
            }

        private void SetView(Series series)
        {
            // 显示Label
            series.LabelsVisibility = DevExpress.Utils.DefaultBoolean.True;
            // 对齐方式
            series.Label.TextAlignment = StringAlignment.Center;
            // 文本方向
            series.Label.TextOrientation = TextOrientation.Horizontal;
            // Label位置
            (series.Label as BarSeriesLabel).Position = BarSeriesLabelPosition.Top;
        }

 //设置Legend样式
            chartControl1.Legend.Visibility = DefaultBoolean.True;
            chartControl1.Legend.AlignmentHorizontal = LegendAlignmentHorizontal.Center;
            chartControl1.Legend.AlignmentVertical = LegendAlignmentVertical.BottomOutside;
            chartControl1.Legend.Direction = LegendDirection.LeftToRight;