zedGraph画曲线图的问题

a062730 2010-09-02 04:59:14

namespace Quxian

{

    public partial class FormQuxian : Form

    {

        Random ran = new Random();

        

        PointPairList list = new PointPairList();

       

        LineItem myCurve;

       

        public FormQuxian()

        {

            InitializeComponent();

        }

        private void timer1_Tick(object sender, EventArgs e)

        {

            zedGraphControl1.GraphPane.XAxis.Scale.MaxAuto = true;



            double x = (double)new XDate(DateTime.Now);



            double y = ran.NextDouble();



            list.Add(x, y);

      

            this.zedGraphControl1.AxisChange();



            this.zedGraphControl1.Refresh();

            if (list.Count >= 40)

            {

                list.RemoveAt(0);

            }

           

        }

            private void button3_Click(object sender, EventArgs e)

        {



            GraphPane myPane = zedGraphControl1.GraphPane;

           

            myPane.CurveList.Clear();

            this.zedGraphControl1.AxisChange();

            this.zedGraphControl1.Refresh();

            this.zedGraphControl1.GraphPane.Title.Text = "实时浓度曲线图";

            this.zedGraphControl1.GraphPane.XAxis.Title.Text = "时间";



            this.zedGraphControl1.GraphPane.YAxis.Title.Text = "浓度(mg/L)";



            this.zedGraphControl1.GraphPane.XAxis.Type = ZedGraph.AxisType.DateAsOrdinal;



            DateTime dt = DateTime.Now;

            

            myCurve = zedGraphControl1.GraphPane.AddCurve("My Curve", list, Color.Red, SymbolType.None);

            this.zedGraphControl1.AxisChange();

            this.zedGraphControl1.Refresh();



        }

 }

}