gdi+ 折线图

     
panle  为画图的容器，
data 每个项为数据输入格式为 1,2,3,4 
time  格式为 "10:20,10:30,10:40 "
name 格式为 "项目1,项目2";

   

        static public void StaDrawHdImage(Panel ImagePanle,ArrayList  data,string time,string names)
       { 

           Imagewidth = ImagePanle.Width;
           ImageHeight = ImagePanle.Height;
            
           Bitmap bm = new Bitmap(ImagePanle.Width,ImagePanle .Height);
          Graphics  g=Graphics.FromImage(bm);
          g.SmoothingMode = SmoothingMode.AntiAlias;
          Rectangle toptile = new Rectangle(new Point(0, 0), new Size(Imagewidth, ImageHeight));
          Brush brtop = new SolidBrush(Color.FromArgb(59, 110, 165));
          g.FillRectangle(brtop, toptile);
          Brush NameBrush=new SolidBrush (Color .FromArgb (255,255,255));
         g.DrawString("烟尘黑度监视分析系统", new Font("宋体",16), NameBrush, ImagePanle.Width / 2 - 130, 10);

            /**//*画箭头*/
         
         g.DrawLine(new Pen (NameBrush), new Point(localLeft - 1, LocalTop - 10), new Point(localLeft - 1, ImagePanle.Height - 30));
         g.DrawLine(new Pen(NameBrush), new Point(localLeft - 1, ImageHeight - LocalButtom), new Point(Imagewidth - localRight+10, ImageHeight - LocalButtom));
          g.DrawLine(new Pen(NameBrush), new Point(localLeft-1, LocalTop-10), new Point(localLeft-1+2, LocalTop-10+2));
         g.DrawLine(new Pen(NameBrush), new Point(localLeft-1, LocalTop-10), new Point(localLeft-1-2, LocalTop-10+2));
         g.DrawLine (new Pen (NameBrush),new Point(Imagewidth-localRight+10,ImageHeight -LocalButtom),new Point (Imagewidth-localRight+10-2,ImageHeight-LocalButtom-2));
          g.DrawLine(new Pen(NameBrush), new Point(Imagewidth - localRight + 10, ImageHeight - LocalButtom), new Point(Imagewidth - localRight + 10 - 2, ImageHeight - LocalButtom + 2));
          
            /**//*画垂直刻度*/
          for (int i = 0; i <5; i++)
          {  
              int  kd=(ImageHeight-LocalTop-LocalButtom) /5;
          g.DrawLine(new Pen(NameBrush), new Point(localLeft-1, LocalTop+kd * i ), new Point(localLeft-4, LocalTop+kd * i ) );
          g.DrawString (Convert.ToString (5-i).ToString (),new Font("宋体",9),NameBrush,new Point (localLeft-10, LocalTop+kd * i-4));
     
          }
        
            /**//*画水平刻度*/

          string[] temptimes = time.Split(new char[] { ',' });
          for (int j = 0; j <temptimes.Length; j++)
          {

              float kds = (float)(Imagewidth - localLeft - localRight) / (float)temptimes.Length; ;

              if (j < temptimes.Length)
              {
                  g.DrawLine(new Pen(NameBrush), new PointF((float)(localLeft - 1 + kds * j), ImageHeight - LocalButtom), new PointF((float)(localLeft - 1 + kds * j), ImageHeight - LocalButtom + 4));
                  g.DrawString(temptimes[j], new Font("宋体", 9), NameBrush, new PointF((float)(localLeft - 1 + kds * j - 10), ImageHeight - LocalButtom + 8));
              }
          }
          Rectangle ra=new Rectangle (new Point (localLeft,LocalTop),new Size(Imagewidth-localLeft-localRight,ImageHeight-LocalButtom -LocalTop));
           Brush br = new LinearGradientBrush(ra,Color .FromArgb (0,0,0),Color.FromArgb(255,255,255), LinearGradientMode.Vertical);
          
          g.FillRectangle(br, ra);

            /**//*画线*/ 
              int  kdy=(ImageHeight-LocalTop-LocalButtom) /5;
              float kdx = (float)(Imagewidth - localLeft - localRight) / (float)temptimes.Length;
              
            // PointF[] poins=new PointF[data.Length];
             for (int i = 0; i < data.Count; i++)
             {
                 Brush databrush = new SolidBrush(colordata [i]);
                 string[] temp =data[i].ToString ().Split(new char[] { ',' });
                 PointF[] poins = new PointF[temp.Length];
                  for (int j=0;j<temp.Length ;j++)
                 { 
                     
                  poins[ j] = new PointF((float)(localLeft + kdx * j), LocalTop + kdy * (5 -int.Parse (temp[j])));
                 }
                 g.DrawLines(new Pen(databrush), poins);
                 
                 
             }
                /**//* poins[0] = new PointF((float)(localLeft + kdx * 0), LocalTop + kdy * (5 - 2));
              poins[1] = new PointF((float)(localLeft + kdx * 1), LocalTop + kdy * (5 - 1));
              poins[2] = new PointF((float)(localLeft + kdx * 2), LocalTop+ kdy * (5 - 3));
                 */
             
                        
             Brush b=new SolidBrush(Color.Black );
             
           g.FillRectangle(NameBrush,new Rectangle (new Point(Imagewidth-200,ImageHeight-200),new Size (170,170)));
           if (names != null)
           {
               string[] tempName = names.Split(new char[] { ',' });
               for (int l = 0; l < tempName.Length; l++)
               {
                   g.FillRectangle(new SolidBrush(colordata[l]), new Rectangle(new Point(Imagewidth - 200 + 20, ImageHeight - 200 + 20 * l + 10 * (l + 1)), new Size(20, 20)));
                   g.DrawString(tempName[l].ToString(), new Font("宋体", 9), b, new PointF(Imagewidth - 200 + 60, ImageHeight - 200 + 20 * l + 10 * (l + 1)));

               }
           }
         
            ImagePanle.BackgroundImage = bm;
           

       }