使用ASP.NET動态生成圖檔

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Drawing.Imaging;

using System.Web;

using System.Web.SessionState;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

namespace Birdshome

{

    /// <summary>

    /// Summary description for _Default.

    /// </summary>

    public class _Default : System.Web.UI.Page

    {

        int m_Unit = 3;

        private void Page_Load(object sender, System.EventArgs e)

        {

            // Put user code to initialize the page here

            int counter_width = 32/8;

            int counter_height =16;

            Bitmap bmp = new Bitmap(counter_width*m_Unit*8, counter_height*m_Unit);

            GenerateBitmap(bmp);

            Response.Clear();

            Response.ContentType = "image/jpeg";

               bmp.Save(Response.OutputStream, ImageFormat.Jpeg);

        }

        Web Form Designer generated code

        private void GenerateBitmap(Bitmap bmp)

            //#define counter_width 32

            //#define counter_height 16

            byte [] counter_bits = new byte[]

            {

                0x00, 0x00, 0x00, 0x00,  0x00, 0x00, 0x00, 0x00, 

                0x3E, 0x1C, 0x7F, 0x7F,  0x63, 0x06, 0x03, 0x03, 

                0x60, 0x03, 0x03, 0x03,  0x60, 0x03, 0x03, 0x03, 

                0x3C, 0x3F, 0x3F, 0x3F,  0x60, 0x63, 0x60, 0x60, 

                0x60, 0x63, 0x60, 0x60,  0x60, 0x63, 0x60, 0x60, 

                0x63, 0x63, 0x63, 0x63,  0x3E, 0x3E, 0x3E, 0x3E

            };

            Graphics g = Graphics.FromImage(bmp);

            for( int i=0 ; i < counter_height ; i++ )

                for( int j=0 ; j < counter_width ; j++ )

                {

                    byte by = counter_bits[counter_width*i+j];

                    for( int k=0 ; k < 8 ; k++ )

                    {

                        byte bit = 0;

                        bit = (byte)(by & 0x01);

                        Rectangle rect = new Rectangle(k*m_Unit+j*8*m_Unit, i*m_Unit, m_Unit, m_Unit);

                        Brush brush;

                        if( bit == 0x01 )

                        {

                            brush = Brushes.Yellow;

                        }

                        else

                            brush = Brushes.Blue;

                        g.FillRectangle(brush, rect);

                        by = (byte)(by >> 1);

                    }

                }

            }

    }

}

本文轉自部落格園鳥食軒的部落格，原文連結：http://www.cnblogs.com/birdshome/，如需轉載請自行聯系原部落客。