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protected void Button1_Click(object sender, EventArgs e)
    {
        string url;
        url = "end.aspx?name="+Label1.Text+"&home="+TextBox1.Text;
        Response.Redirect(url);
    } 
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    protected void Page_Load(object sender, EventArgs e)
    {
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        Label1.Text = Request.QueryString["name"];
        TextBox1.Text=Request.QueryString["home"];
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// pngtest.htm
<html>
<head></head>
<body bgColor="gray">
<img src="png.ashx" />
</body>
</html>
//  png.ashx
<%@ WebHandler Language="C#" Class="Png" %>
using System.Web;
public class Png : IHttpHandler {
    public void ProcessRequest (HttpContext context) {
HttpResponse Response = context.Response;
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(392, 72);
System.Drawing.Graphics g = System.Drawing.Graphics.fromImage(bmp);
g.Clear(System.Drawing.Color.Gray);
g.DrawString("This is 32bit png.", new System.Drawing.Font("verdana bold", 14f), System.Drawing.Brushes.HotPink, 0f, 0f);
g.Dispose();
bmp.MakeTransparent(System.Drawing.Color.Gray);
System.IO.MemoryStream MemStream = new System.IO.MemoryStream();
bmp.Save(MemStream, System.Drawing.Imaging.ImageFormat.Png);
bmp.Dispose();
Response.Clear();
Response.ContentType = "image/ ......

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using System.Drawing;
using System.Drawing.Drawing2D;
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/// <summary>
/// Éú³ÉÑéÖ¤Âë
/// </summary>
private void DrowCode()
{
Response.Cache.SetNoStore();
System.Drawing.Bitmap image = new System.Drawing.Bitmap(77, 20);
Graphics g = Graphics.fromImage(image);
Color[] borders = new Color[10] { Color.AliceBlue, Color.Aqua, Color.Black, Color.Brown, Color.DarkRed, Color.SkyBlue, Color.Silver, Color.Tan, Color.Violet, Color.SpringGreen };
try
{
Random random = new Random();
g.Clear(Color.White);
//»­Í¼Æ¬µÄ±³¾°ÔëÒôÏß
for (int i = 0; i < 2; i++)
{
int x1 = random.Next(image.Width);
int x2 = random.Next(image.Width);
int y1 = random.Next(image.Height);
int y2 = random.Next(image.Height);
g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2);
......
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