DevExpress之ChartControl实现柱状图演示实例

本文实例讲述了DevExpress中ChartControl实现柱状图演示的方法。分享给大家供大家参考。具体实现方法如下：

关键代码如下：

using System;

using System.Data;

using System.Windows.Forms;

using CSharpUtilHelpV2;

using DevExpress.XtraCharts;

namespace DevExpressChart

{

    public partial class winProduct : Form

    {

        public winProduct()

        {

            InitializeComponent();

        }

        static readonly string AccessFullPath = string.Format(@"{0}\Northwind.MDB", AppDomain.CurrentDomain.BaseDirectory);

        static DataTable ProductList = null;

        AccessUtilsV2 AccessHelper = null;

        private void winChat_Load(object sender, EventArgs e)

        {

            AccessHelper = new AccessUtilsV2(AccessFullPath);

            ProductList = AccessHelper.ExecuteDataTable("select * from Products", null);

            BuilderDevChart();

        }

        private void BuilderDevChart()

        {

            if (ProductList != null)

            {

                Series _barSeries = new Series("测试", ViewType.Bar);

                _barSeries.ArgumentDataMember = "ProductName";//x轴

                _barSeries.ValueDataMembers[0] = "UnitPrice";//Y轴

                _barSeries.DataSource = ProductList;

                _barSeries.AddDataFilter("CategoryID", 4, DataFilterCondition.Equal);

                _barSeries.SetColorEach(true);

                chartControl1.Series.Add(_barSeries);

                _barSeries.LegendPointOptions.PointView = PointView.ArgumentAndValues;
                //chartControl1.SeriesDataMember = "UnitPrice";

                //chartControl1.SeriesTemplate.ValueDataMembers[0] = "UnitPrice";

                //chartControl1.SeriesTemplate.ArgumentDataMember = "ProductName";

                //chartControl1.SeriesTemplate.ArgumentScaleType = ScaleType.Qualitative;

                //chartControl1.SeriesTemplate.AddDataFilter("CategoryID", 4, DataFilterCondition.Equal);

                //chartControl1.SeriesTemplate.LegendPointOptions.PointView = PointView.ArgumentAndValues;

                chartControl1.SetXLableAngle(-35);

                chartControl1.SetCrosshair(true);
                chartControl1.Legend.Direction = LegendDirection.LeftToRight;

                chartControl1.Legend.AlignmentHorizontal = LegendAlignmentHorizontal.Center;

                chartControl1.Legend.AlignmentVertical = LegendAlignmentVertical.BottomOutside;

                chartControl1.DataSource = ProductList;
                chartControl1.AddTitle("Product List");

                //--------------------------

            }

        }

    }

}

using DevExpress.Utils;

using DevExpress.XtraCharts;

namespace DevExpressChart

{

    public static class ChartUtils

    {

        /// <summary>

        /// 增加数据筛选

        /// </summary>

        /// <param name="SeriesBase">Series</param>

        /// <param name="columnName">列名称</param>

        /// <param name="value">列名称对应的筛选数值</param>

        /// <param name="dataFilterCondition">DataFilterCondition枚举</param>

        public static void AddDataFilter(this SeriesBase series, string columnName, object value, DataFilterCondition dataFilterCondition)

        {

            series.DataFilters.Add(new DataFilter(columnName, value.GetType().FullName, dataFilterCondition, value));

        }
        /// <summary>

        /// 设置X轴Lable角度

        /// </summary>

        /// <param name="chart">ChartControl</param>

        /// <param name="angle">角度</param>

        public static void SetXLableAngle(this ChartControl chart, int angle)

        {

            XYDiagram _xyDiagram = (XYDiagram)chart.Diagram;

            if (_xyDiagram != null)

                _xyDiagram.AxisX.Label.Angle = angle;

        }

        /// <summary>

        ///  设置Y轴Lable角度

        /// </summary>

        /// <param name="chart">ChartControl</param>

        /// <param name="angle">角度</param>

        public static void SetYLableAngle(this ChartControl chart, int angle)

        {

            XYDiagram _xyDiagram = (XYDiagram)chart.Diagram;

            _xyDiagram.AxisY.Label.Angle = angle;

        }

        /// <summary>

        /// 设置ColorEach

        /// </summary>

        /// <param name="chart">ChartControl</param>

        /// <param name="colorEach">是否设置成ColorEach</param>

        public static void SetColorEach(this Series series, bool colorEach)

        {

            SeriesViewColorEachSupportBase colorEachView = (SeriesViewColorEachSupportBase)series.View;

            if (colorEachView != null)

            {

                colorEachView.ColorEach = colorEach;

            }

        }

        /// <summary>

        /// 设置是否显示十字标线

        /// </summary>

        /// <param name="chart">ChartControl</param>

        /// <param name="crosshair">是否显示十字标线</param>

        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;

        }

        /// <summary>

        /// 新增ChartControl的Title文字

        /// </summary>

        /// <param name="chart">ChartControl</param>

        /// <param name="title">Title文字</param>

        public static void AddTitle(this ChartControl chart, string title)

        {

            ChartTitle _title = new ChartTitle();

            _title.Text = title;

            chart.Titles.Add(_title);

        }

        /// <summary>

        /// 饼状Series设置成百分比显示

        /// </summary>

        /// <param name="series">Series</param>

        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;

            }

        }

    }

}

希望本文所述对大家的C#程序设计有所帮助。