C#实现动态数据绘图graphic的方法示例

本文实例讲述了c#实现动态数据绘图graphic的方法。分享给大家供大家参考，具体如下：

using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.windows.forms;
using system.drawing.drawing2d;
namespace drawing
{
  public partial class form1 : form
  {
    public form1()
    {
      initializecomponent();
    }
    private int widthadded = 0;
    private int heightadded = 0;
    private int added_value = 15;
    private int incremented = 3;
    private double width_max = 0.0f;
    private double height_max = 0f;
    private string hstrlink;
    private string vstrlink;
    private const int hor_kedu=17;
    private const int ver_kedu = 13;
    private double helprdm = 0;
    private void form1_load(object sender, eventargs e)
    {
      width_max=convert.todouble(panel.clientsize.width);
      height_max = convert.todouble(panel.clientsize.height);
      btnstatusinfoforb();
    }
    private void button1_click(object sender, eventargs e)
    {
      graphics mygraphics_framwork;
      pen mypen = new pen(color.blue, 0.25f);
      mygraphics_framwork = panel.creategraphics();
      for (int increment = 0; increment < panel.height; increment += incremented)
      {
        mygraphics_framwork.drawline(mypen, 0, heightadded, panel.clientsize.width, heightadded);
        heightadded = heightadded + added_value;
      }
      for (int increment = 0; increment < panel.height; increment += incremented)
      {
        mygraphics_framwork.drawline(mypen, widthadded, 0, widthadded, panel.clientsize.height);
        widthadded = widthadded + added_value;
      }
      mygraphics_framwork.dispose();
      for (int hstart = 0; hstart < width_max; hstart += hor_kedu)
      {
        hstrlink = hstrlink + hstart.tostring() + "-";
      }
      label2.text = hstrlink;
      for (int start = (int)height_max; start > 0; start -= ver_kedu)
      {
        vstrlink = vstrlink + start.tostring() + "-" + "\n";
      }
      label3.text = vstrlink + "0-";
      btnstatusinfoacti();
      button1.enabled = false;
    }
    private void btnstatusinfoforb()
    {
      button2.enabled = false;
      button3.enabled = false;
      button4.enabled = false;
      trackbar1.enabled = false;
      rec_numbox.enabled = false;
    }
    private void btnstatusinfoacti()
    {
      button2.enabled = true;
      button3.enabled = true;
      button4.enabled = true;
      trackbar1.enabled = true;
      rec_numbox.enabled = true;
    }
    private void myfun()
    {
      graphics mygraphics = panel.creategraphics();
      font myfont = new font("times new roman", 72, fontstyle.italic);
      point startpoint = new point(0, 0);
      point endpoint = new point(30, 30);
      lineargradientbrush mybrush = new lineargradientbrush(startpoint, endpoint, color.black, color.yellow);
      mybrush.wrapmode = wrapmode.tileflipxy;
      mygraphics.drawstring("string", myfont, mybrush, 0, 0);
    }
    private void button2_click(object sender, eventargs e)
    {
      if (parabox1.text == null)
      {
        messagebox.show("请输入矩形的高度");
      }
      else
      {
        try
        {
          graphics mygraphics_rectangle = panel.creategraphics();
          pen mypen_rec = new pen(color.red, 3);
          rectangle rect = new rectangle();
          rect.x = 20; rect.y = panel.clientsize.height - convert.toint32(parabox1.text);
          rect.width = 20; rect.height = panel.clientsize.height;
          mygraphics_rectangle = panel.creategraphics();
          mygraphics_rectangle.drawrectangle(mypen_rec, rect);
          solidbrush myrectbrush = new solidbrush(color.purple);
          mygraphics_rectangle.fillrectangle(myrectbrush, rect);
          mygraphics_rectangle.dispose();
        }
        catch (exception excp)
        {
          messagebox.show(excp.message);
        }
      }
    }
    /// <summary>
    ///
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void button3_click(object sender, eventargs e)
    {
      graphics mygraphics_rectangle = panel.creategraphics();
      if (rec_numbox == null)
      {
        messagebox.show("请输入你要绘制的矩形数量");
      }
      else
      {
        double count = convert.toint32(rec_numbox.text);
        double tablespace = (1 * width_max) / (4 * count);
        double tablewidth = (3 * width_max) / (4 * count);
        double recoffset = tablewidth + tablespace;//
        pen mypen_rec = new pen(color.red, 3);
        for (long rectnum = 0; rectnum < count; rectnum++)
        {
          random radom = new random();
          system.threading.thread.sleep(20);
          double randomhegiht =radom.next(0, convert.toint32(height_max));
          rectangle rect = new rectangle();
          rect.x =convert.toint32(rectnum*recoffset);
          rect.y = convert.toint32(panel.clientsize.height - randomhegiht);
          rect.width = convert.toint32(tablewidth);
          rect.height = panel.clientsize.height;
          mygraphics_rectangle = panel.creategraphics();
          mygraphics_rectangle.drawrectangle(mypen_rec, rect);
          solidbrush myrectbrush = new solidbrush(color.green);
          mygraphics_rectangle.fillrectangle(myrectbrush, rect);
        }
      mygraphics_rectangle.dispose();
      }
      rec_numbox.text = added_value.tostring();
      added_value = added_value+50;
    }
    private void button4_click(object sender, eventargs e)
    {
      stringformat sf=new stringformat();
      sf.alignment = stringalignment.near;
      graphics mygraphics = panel.creategraphics();
      rectanglef ref = new rectanglef(12, 30, 8, 38);
      font myfont = new font("times new roman", 62, fontstyle.italic);
      point startpoint = new point(0, 0);
      point endpoint = new point(30, 30);
      lineargradientbrush mybrush = new lineargradientbrush(startpoint, endpoint, color.green, color.blue);
      solidbrush myrectbrush = new solidbrush(color.purple);
      mybrush.wrapmode = wrapmode.tileflipxy;
      mygraphics.drawstring("b2spirit", myfont, mybrush, 0, 0);
      random r=new random();
      int temp=r.next(10,300);
      mygraphics.drawstring(temp.tostring(), myfont, myrectbrush, ref, sf);
    }
    private void trackbar1_scroll(object sender, eventargs e)
    {
      trackbar mytb=new trackbar();
      mytb=(trackbar)sender;
      rec_numbox.text = mytb.value.tostring();
    }
  }
}

截图

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