c# devexpress学习绘图

用字典方式存储数据并绘图：http://www.xuebuyuan.com/465384.html

数据库存储数据，并对图形作各种设置：http://www.cnblogs.com/xuhaibiao/archive/2012/08/23/2652142.html      有图有代码：http://www.cnblogs.com/xuhaibiao/archive/2012/08/23/2652148.html

using DevExpress.XtraCharts;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace DXApplication1chart1
{
    public partial class Form1 : DevExpress.XtraEditors.XtraForm
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.xtraTabControl1.TabPages.Add("普通折线图");
            ChartControl lineChart = new ChartControl();
            Series series1 = new Series("通过人数", ViewType.Line);
            series1.ArgumentScaleType = ScaleType.Numerical;
            ((LineSeriesView)series1.View).LineMarkerOptions.Kind = MarkerKind.Triangle;
            ((LineSeriesView)series1.View).LineStyle.DashStyle = DashStyle.Dash;
            series1.Points.Add(new SeriesPoint(1, new double[] { 2 }));
            series1.Points.Add(new SeriesPoint(2, new double[] { 3 }));
            series1.Points.Add(new SeriesPoint(3, new double[] { 4 }));
            series1.Points.Add(new SeriesPoint(4, new double[] { 6 }));
            series1.Points.Add(new SeriesPoint(5, new double[] { 8 }));
            series1.Points.Add(new SeriesPoint(6, new double[] { 10 }));
            series1.Points.Add(new SeriesPoint(7, new double[] { 12 }));
            series1.Points.Add(new SeriesPoint(8, new double[] { 15 }));
            series1.CheckableInLegend = true;

            Series series2 = new Series("报名人数", ViewType.Line);
            series2.ArgumentScaleType = ScaleType.Numerical;
            ((LineSeriesView)series2.View).LineMarkerOptions.Kind = MarkerKind.Cross;
            ((LineSeriesView)series2.View).LineStyle.DashStyle = DashStyle.DashDotDot;
            series2.Points.Add(new SeriesPoint(1, new double[] { 3 }));
            series2.Points.Add(new SeriesPoint(2, new double[] { 5 }));
            series2.Points.Add(new SeriesPoint(3, new double[] { 6 }));
            series2.Points.Add(new SeriesPoint(4, new double[] { 7 }));
            series2.Points.Add(new SeriesPoint(5, new double[] { 11 }));
            series2.Points.Add(new SeriesPoint(6, new double[] { 13 }));
            series2.Points.Add(new SeriesPoint(7, new double[] { 15 }));
            series2.Points.Add(new SeriesPoint(8, new double[] { 18 }));
            lineChart.Series.Add(series1); lineChart.Series.Add(series2); lineChart.Legend.Visible = true;
            ((XYDiagram)lineChart.Diagram).Rotated = false;
            lineChart.Dock = DockStyle.Fill; lineChart.Size = new System.Drawing.Size(400, 250);
            this.Controls.Add(lineChart);
            int tabPagesCount = this.xtraTabControl1.TabPages.Count - 1;
            this.xtraTabControl1.TabPages[tabPagesCount].Controls.Add(lineChart); 
            this.xtraTabControl1.SelectedTabPageIndex = tabPagesCount;  
        }
    }
}