private void CreateImage() {



           string[] month = new string[5] { "第一季度", "第二季度", "第三季度", "第四季度", "全年"};

          //  float[] d = new float[12] { 20,30,10,50,25,36,14,70,50.4F,28,31,10};

            Bitmap bMap = new Bitmap(700,700);

            Graphics gph = Graphics.FromImage(bMap);

            gph.Clear(Color.White);



            PointF cpt = new PointF(40, 420);

            //X轴三角形

            PointF[] xpt = new PointF[3] { new PointF(cpt.Y+8, cpt.Y), new PointF(cpt.Y, cpt.Y - 4), new PointF(cpt.Y, cpt.Y + 4) };

            //Y轴三角形

            PointF[] ypt = new PointF[3] { new PointF(cpt.X, cpt.X - 8), new PointF(cpt.X -4, cpt.X), new PointF(cpt.X + 4, cpt.X) };

            gph.DrawString("呼叫统计图", new Font("宋体", 14), Brushes.Black, new PointF(cpt.X + 60, cpt.X));

         

            //画X轴

            gph.DrawLine(Pens.Black, cpt.X, cpt.Y, cpt.Y, cpt.Y);

            gph.DrawPolygon(Pens.Black, xpt);

            gph.FillPolygon(new SolidBrush(Color.Black), xpt);

            gph.DrawString("月份",new Font("宋体",12),Brushes.Black,new PointF(cpt.Y+10,cpt.Y+10));

            //画Y轴

            gph.DrawLine(Pens.Black, cpt.X, cpt.Y, cpt.X, cpt.X);

            gph.DrawPolygon(Pens.Black, ypt);

            gph.FillPolygon(new SolidBrush(Color.Black), ypt);