using System;using System.Data;using System.Windows.Forms;using DevExpress.XtraCharts;namespace DevExpressChart{ public partial class winDateTime : Form { public winDateTime() { InitializeComponent(); } private void winDateTime_Load(object sender, EventArgs e) { BuilderDevChart(); } private DataTable CreateChartData() { DataTable table = new DataTable("Table1"); table.Columns.Add("Date", typeof(DateTime)); table.Columns.Add("Value", typeof(Int32)); table.Rows.Add(new object[] { new DateTime(2014, 5, 21), 10 }); table.Rows.Add(new object[] { new DateTime(2014, 6, 22), 20 }); table.Rows.Add(new object[] { new DateTime(2014, 7, 23), 40 }); table.Rows.Add(new object[] { new DateTime(2014, 8, 24), 20 }); table.Rows.Add(new object[] { new DateTime(2014, 9, 25), 30 }); return table; } private void BuilderDevChart() { Series _lineSeries = new Series("利润", ViewType.Line); _lineSeries.ArgumentScaleType = ScaleType.DateTime; _lineSeries.ArgumentDataMember = "Date"; _lineSeries.ValueDataMembers[0] = "Value"; _lineSeries.DataSource = CreateChartData(); chartControl1.Series.Add(_lineSeries); chartControl1.SetTimeAxisX(DateTimeMeasurementUnit.Month, DateTimeMeasurementUnit.Month, "yyyy-MM"); //--------------------------------------------------------------- //_lineSeries.ValueScaleType = ScaleType.DateTime; //_lineSeries.ArgumentDataMember = "Value"; //_lineSeries.ValueDataMembers[0] = "Date"; //_lineSeries.DataSource = CreateChartData(); //chartControl1.Series.Add(_lineSeries); //XYDiagram _diagram = (XYDiagram)chartControl1.Diagram; //_diagram.AxisY.DateTimeMeasureUnit = DateTimeMeasurementUnit.Month; //_diagram.AxisY.DateTimeGridAlignment = DateTimeMeasurementUnit.Month; //_diagram.AxisY.DateTimeOptions.Format = DateTimeFormat.Custom; //_diagram.AxisY.DateTimeOptions.FormatString = "MMMM"; } }} using DevExpress.Utils;using DevExpress.XtraCharts;namespace DevExpressChart{ public static class ChartUtils { /// /// 增加数据筛选 /// /// Series /// 列名称 /// 列名称对应的筛选数值 /// DataFilterCondition枚举 public static void AddDataFilter(this SeriesBase series, string columnName, object value, DataFilterCondition dataFilterCondition) { series.DataFilters.Add(new DataFilter(columnName, value.GetType().FullName, dataFilterCondition, value)); } /// /// 设置X轴Lable角度 /// /// ChartControl /// 角度 public static void SetXLableAngle(this ChartControl chart, int angle) { XYDiagram _xyDiagram = (XYDiagram)chart.Diagram; if (_xyDiagram != null) _xyDiagram.AxisX.Label.Angle = angle; } /// /// 设置Y轴Lable角度 /// /// ChartControl /// 角度 public static void SetYLableAngle(this ChartControl chart, int angle) { XYDiagram _xyDiagram = (XYDiagram)chart.Diagram; _xyDiagram.AxisY.Label.Angle = angle; } /// /// 设置ColorEach /// /// ChartControl /// 是否设置成ColorEach public static void SetColorEach(this Series series, bool colorEach) { SeriesViewColorEachSupportBase colorEachView = (SeriesViewColorEachSupportBase)series.View; if (colorEachView != null) { colorEachView.ColorEach = colorEach; } } /// /// 设置是否显示十字标线 /// /// ChartControl /// 是否显示十字标线 public static void SetCrosshair(this ChartControl chart, bool crosshair) { chart.CrosshairEnabled = crosshair ? DefaultBoolean.True : DefaultBoolean.False; chart.CrosshairOptions.ShowArgumentLabels = crosshair; chart.CrosshairOptions.ShowArgumentLine = crosshair; chart.CrosshairOptions.ShowValueLabels = crosshair; chart.CrosshairOptions.ShowValueLine = crosshair; } /// /// 新增ChartControl的Title文字 /// /// ChartControl /// Title文字 public static void AddTitle(this ChartControl chart, string title) { ChartTitle _title = new ChartTitle(); _title.Text = title; chart.Titles.Add(_title); } /// /// 饼状Series设置成百分比显示 /// /// Series public static void SetPiePercentage(this Series series) { if (series.View is PieSeriesView) { ((PiePointOptions)series.PointOptions).PercentOptions.ValueAsPercent = true; ((PiePointOptions)series.PointOptions).ValueNumericOptions.Format = NumericFormat.Percent; ((PiePointOptions)series.PointOptions).ValueNumericOptions.Precision = 0; } } /// /// 将X轴格式化成时间轴 /// /// ChartControl /// X轴刻度单位 /// X轴刻度间距的单位 public static void SetTimeAxisX(this ChartControl chart, DateTimeMeasurementUnit dateTimeMeasureUnit, DateTimeMeasurementUnit dateTimeGridAlignment) { XYDiagram _diagram = (XYDiagram)chart.Diagram; if (_diagram != null) { _diagram.AxisX.DateTimeMeasureUnit = DateTimeMeasurementUnit.Month;//X轴刻度单位 _diagram.AxisX.DateTimeGridAlignment = DateTimeMeasurementUnit.Month;//X轴刻度间距 } } /// /// 将X轴格式化成时间轴 /// /// ChartControl /// X轴刻度单位 /// X轴刻度间距的单位 /// 时间格式；eg:yyyy-MM public static void SetTimeAxisX(this ChartControl chart, DateTimeMeasurementUnit dateTimeMeasureUnit, DateTimeMeasurementUnit dateTimeGridAlignment, string formatString) { XYDiagram _diagram = (XYDiagram)chart.Diagram; if (_diagram != null) { _diagram.AxisX.DateTimeMeasureUnit = DateTimeMeasurementUnit.Month;//X轴刻度单位 _diagram.AxisX.DateTimeGridAlignment = DateTimeMeasurementUnit.Month;//X轴刻度间距 _diagram.AxisX.DateTimeOptions.Format = DateTimeFormat.Custom; _diagram.AxisX.DateTimeOptions.FormatString = formatString; } } }} 
DevExpress ChartControl加载大数据量数据时的性能优化方法有哪些？
关于图表优化，可从以下几个方面解决：
1.关闭不需要的可视化的元素(如LineMarkers, Labels等): Series.View.LineMarkerOptions.Visible =false.
2. 关闭图表的滚动与缩放功能，手动调整范围，这样将大大减少所需计算的个数。
3. 将 ChartControl.RefreshDataOnRepaint属性设为false
4. 将 ChartControl.CacheToMemory属性设为true，这样将通过缓存提供图表性能及内存消耗。
5. 将ChartControl.RuntimeHitTesting属性设为false。这样将禁用聚焦检查及测试，提供图表重绘速度.