网站验证码图片生成(asp.net)

1. 在aspx页面上放置一个Img标签. <img src="JpegImage.aspx">

2. JpegImage.aspx的CS和aspx代码

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

      //CaptchaImage 这个类就是用来生成验证码的。MS已经帮我们搞好了。。。简单调用一下就行了
      CaptchaImage ci = new CaptchaImage("要显示的内容", 200, 50, "Century Schoolbook");
   this.Response.Clear();
    this.Response.ContentType = "image/jpeg";

// Write the image to the response stream in JPEG format.
ci.Image.Save(this.Response.OutputStream, ImageFormat.Jpeg);

ci.Dispose();
}

ASPX页面

<html>
<head>
  <title>JpegImage</title>
  <meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
  <meta name="CODE_LANGUAGE" Content="C#">
  <meta name="vs_defaultClientScript" content="JavaScript">
  <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</head>
<body>
  <form id="JpegImage" method="post" runat="server">

</form>
</body>
</html>

posted on 2011-01-25 11:00 lock 阅读(345) 评论(0) 收藏举报