winform chart的使用

简单总结了下winform 的chart的绘制曲线图的用法：

private ChartDataModel _axisData;
        private Color _borderColor = Color.FromArgb(19, 143, 213);
        private Color _xWordColor = Color.FromArgb(19, 143, 213);
        public void DrawImage(ChartDataModel model)
        {
            _axisData = model;
            //取得记录数量
            int count = model.AreaDataItems[0].DataItems.Count;
            //生成Bitmap对像
            Bitmap img = new Bitmap(1000, 600);
            img.SetResolution(600, 600);
            //生成绘图对像
            Graphics g = Graphics.FromImage(img);
            //定义实线线条的笔
            Pen borderPen = new Pen(_borderColor);
            //定义虚线线条的笔
            Pen dashPen = new Pen(_borderColor);
            dashPen.DashStyle = DashStyle.Dash;
            //定义大标题字体
            Font headFont = new Font("Arial", 12, FontStyle.Bold);
            //定义一般字体
            Font font = new Font("Arial", 2);
            //绘制底色
            g.DrawRectangle(new Pen(Color.White, 1000), 0, 0, img.Width, img.Height);
            //定义x轴刻度过渡型笔刷
            LinearGradientBrush wordBrush = new LinearGradientBrush(new Rectangle(0, 0, img.Width, img.Height), _xWordColor, _xWordColor, 1.2F, true);
            //定义蓝色过渡型笔刷
            LinearGradientBrush Bluebrush = new LinearGradientBrush(new Rectangle(0, 0, img.Width, img.Height), Color.Blue, Color.Blue, 1.2F, true);
            //绘制大标题
            //g.DrawString(model.StockName, Bfont, brush, 40, 5);

            #region 绘制间隔线
            //绘制竖坐标线
            var x_interval = (float)(model.Width / 4);
            var leftPoint = new PointF(150, 100);
            var rightPoint = new PointF(150 + model.Width, 100);
            var bottomPoint = new PointF(150, 100 + model.Height);
            //绘制横坐标线
            var y_interval = (float)(model.Height / 4);
            for (int i = 1; i < 4; i++)
            {
                //x轴虚线
                g.DrawLine(i == 2 ? borderPen : dashPen, leftPoint.X, leftPoint.Y + y_interval * i, rightPoint.X, rightPoint.Y + y_interval * i);

                //y轴虚线
                g.DrawLine(dashPen, leftPoint.X + x_interval * i, leftPoint.Y, bottomPoint.X + x_interval * i, bottomPoint.Y);
            }
            #endregion

            #region 绘制刻度
            //绘制制横坐标标签
            string[] xDatas = new string[] { "9:30", "11:30", "15:00" };
            for (int i = 0; i < 3; i++)
            {
                g.DrawString(xDatas[i], font, wordBrush, leftPoint.X + x_interval * i * 2 - 15, bottomPoint.Y);
            }
            //绘制时间轴坐标标签
            var yset = SetYColor("0.0");
            for (int i = 0; i < yset.ColorList.Count; i++)
            {
                g.DrawString(yset.ColorList[i].Value, font,
                    new SolidBrush(yset.ColorList[i].ForeColor), 80, 100 + y_interval * i - 10);
            }
            #endregion

            #region 绘制坐标轴
            //绘制横坐标轴
            g.DrawLine(borderPen, leftPoint, rightPoint);
            g.DrawLine(borderPen, bottomPoint.X, bottomPoint.Y, rightPoint.X, bottomPoint.Y);
            //绘制竖坐标轴
            g.DrawLine(borderPen, leftPoint.X, leftPoint.Y, bottomPoint.X, bottomPoint.Y);
            g.DrawLine(borderPen, rightPoint.X, rightPoint.Y, rightPoint.X, bottomPoint.Y);
            #endregion


            //定义曲线转折点
            PointF[] p = new PointF[count];
            var temp = leftPoint.Y + model.Height;
            var changetemp = model.Height / ((float)model.AreaDataItems[0].Max - (float)model.AreaDataItems[0].Min);
            for (int i = 0; i < count; i++)
            {
                p[i].X = leftPoint.X + i * 2;
                p[i].Y = temp - changetemp * (model.AreaDataItems[0].DataItems[i].YFData - (float)model.AreaDataItems[0].Min);
            }
            g.DrawLines(borderPen, p);

            for (int i = 0; i < count; i++)
            {
                g.DrawRectangle(borderPen, p[i].X, p[i].Y, 1, 1);
            }

            //保存绘制的图片
            FileStream file = new FileStream(@"D:\1.jpg", FileMode.Create, FileAccess.ReadWrite);
            img.Save(file, ImageFormat.Jpeg);

        }

        private AxisYSetColor SetYColor(string formatStr)//设置Y轴的文字样式
        {
            var max = (float)_axisData.AreaDataItems[0].Max;
            var center = (float)_axisData.AreaDataItems[0].Center;
            var maxcen = (max + center) / 2;
            var min = (float)_axisData.AreaDataItems[0].Min;
            var mincen = (min + center) / 2;
            var yset = new AxisYSetColor();
            yset.FormatStr = formatStr;
            yset.ChangeColor(max, maxcen, center, mincen, min);
            return yset;

        }