using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Text;

 using System.Windows.Forms;

 using System.Windows.Forms.DataVisualization.Charting;

 using System.Drawing;

 namespace DrawGraph

 {

     /// <summary>

     /// 绘制曲线类

     /// </summary>

     public static class DrawClass

     {

         #region 绘制曲线函数

         /// <summary>

         /// 绘制曲线函数

         /// </summary>

         /// <param name="listX">X值集合</param>

         /// <param name="listY">Y值集合</param>

         /// <param name="chart">Chart控件</param>

         public static void DrawSpline(List<int> listX, List<double> listY, Chart chart)

         {

             try

             {

                 //X、Y值成员

                 chart.Series[].Points.DataBindXY(listX, listY);

                 chart.Series[].Points.DataBindY(listY);

                 //点颜色

                 chart.Series[].MarkerColor = Color.Green;

                 //图表类型  设置为样条图曲线

                 chart.Series[].ChartType = SeriesChartType.Spline;

                 //设置点的大小

                 chart.Series[].MarkerSize = ;

                 //设置曲线的颜色

                 chart.Series[].Color = Color.Orange;

                 //设置曲线宽度

                 chart.Series[].BorderWidth = ;

                 //chart.Series[0].CustomProperties = "PointWidth=4";

                 //设置是否显示坐标标注

                 chart.Series[].IsValueShownAsLabel = false;

                 //设置游标

                 chart.ChartAreas[].CursorX.IsUserEnabled = true;

                 chart.ChartAreas[].CursorX.AutoScroll = true;

                 chart.ChartAreas[].CursorX.IsUserSelectionEnabled = true;

                 //设置X轴是否可以缩放

                 chart.ChartAreas[].AxisX.ScaleView.Zoomable = true;

                 //将滚动条放到图表外

                 chart.ChartAreas[].AxisX.ScrollBar.IsPositionedInside = false;

                 // 设置滚动条的大小

                 chart.ChartAreas[].AxisX.ScrollBar.Size = ;

                 // 设置滚动条的按钮的风格，下面代码是将所有滚动条上的按钮都显示出来

                 chart.ChartAreas[].AxisX.ScrollBar.ButtonStyle = ScrollBarButtonStyles.All;

                 chart.ChartAreas[].AxisX.ScrollBar.ButtonColor = Color.SkyBlue;

                 // 设置自动放大与缩小的最小量

                 chart.ChartAreas[].AxisX.ScaleView.SmallScrollSize = double.NaN;

                 chart.ChartAreas[].AxisX.ScaleView.SmallScrollMinSize = ;

                 //设置刻度间隔

                 chart.ChartAreas[].AxisX.Interval = ;

                 //将X轴上格网取消

                 chart.ChartAreas[].AxisX.MajorGrid.Enabled = false;

                 //X轴、Y轴标题

                 chart.ChartAreas[].AxisX.Title = "环号";

                 chart.ChartAreas[].AxisY.Title = "直径";

                 //设置Y轴范围  可以根据实际情况重新修改

                 double max = listY[];

                 double min = listY[];

                 foreach (var yValue in listY)

                 {

                     if (max < yValue)

                     {

                         max = yValue;

                     }

                     if (min > yValue)

                     {

                         min = yValue;

                     }

                 }

                 chart.ChartAreas[].AxisY.Maximum = max;

                 chart.ChartAreas[].AxisY.Minimum = min;

                 chart.ChartAreas[].AxisY.Interval = (max - min) / ;

                 //绑定数据源

                 chart.DataBind();

             }

             catch (Exception exc)

             {

                 MessageBox.Show(exc.ToString());

             }

         }

         #endregion

         #region 鼠标点击，通过环号显示游标，并缩放到响应位置

         /// <summary>

         /// 鼠标点击，通过环号显示游标，并缩放到响应位置函数

         /// </summary>

         /// <param name="ringNum">环号</param>

         /// <param name="chart">Chart控件</param>

         public static void ShowCurByClick(int ringNum, Chart chart)

         {

             //设置游标位置

             chart.ChartAreas[].CursorX.Position = ringNum;

             //设置视图缩放

             chart.ChartAreas[].AxisX.ScaleView.Zoom(ringNum - , ringNum + );

             //改变曲线线宽

             chart.Series[].BorderWidth = ;

             //改变X轴刻度间隔

             chart.ChartAreas[].AxisX.Interval = ;

         }

         #endregion

     }

 }