字母\数字\汉字混合的验证码源码-问答列表|—51aspx.com

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mmy12***（用户）发表于：2010-11-30 09:42:00

这个做的很不错哦

1 个回复
- diana***（用户）回复于：2010-12-01 09:28:00
  
  呵呵多谢楼主支持，也感谢作者的无私奉献~~
sglm2***（用户）发表于：2010-07-14 14:02:00

很好！！！谢谢了

0 个回复
gxagd***（作者）发表于：2008-04-19 15:44:00

网上有很多关于验证码做法的资料,但是真正做得完整的却非常少,所以昨天晚上参考了作者：CSDN 上kwklover 的<a href="http://whxylm.cnblogs.com/smartcn/archive/2004/07/07/22091.html" target="_blank">在ASP.NET下实现数字和字符相混合的验证码 </a>(混合,完整,遗憾的是vb.net,说到这里我想我得感谢stone(QQ9337874),因为我在把VB译成C#的过程中几番出错,最终这段翻译由他完成)!! 随机汉字参考了<a href="http://navicy.cnblogs.com/archive/2005/05/08/150756.html" target="_blank">http://navicy.cnblogs.com/archive/2005/05/08/150756.html</a>这篇文章的, 而最终的纯数字以及GDI+绘图则是从□☆近三十☆(QQ19302038)传给我的一个OA案例里面分离出来的! 所以完整的说,这里面几乎都是别人做好了的,我只是整理出来了! 完整的下载地址是 <a href="http://thcjp.cnblogs.com/Files/thcjp/gdi.rar" target="_blank">http://www.cnblogs.com/Files/thcjp/gdi.rar</a> 下面把代码的重点部分贴出来，如果看源文件有什么不明白可以问偶　ＱＱ<a href="mailto:angel0608@126.com" target="_blank">******</a> 效果如图(我确实懒了点,按纽的名字都没有改,哈哈) 需要说明的是,因为提交对比后,页面是重新刷新了,所以文本框里面看见的和后面图片显示不一样,这个不需要太多说明吧!! 混合模式刷新出现约界错误已经被 stone(QQ9337874) 修正!! <img src="http://www.cnblogs.com/images/cnblogs_com/thcjp/aaaa.jpg" border="0" /> <img src="http://www.cnblogs.com/images/cnblogs_com/thcjp/bbb.jpg" border="0" /> <img src="http://www.cnblogs.com/images/cnblogs_com/thcjp/ddd.jpg" border="0" /> <img src="http://www.cnblogs.com/images/cnblogs_com/thcjp/ccc.JPG" border="0" /> 下面是ＧＤＩ＋绘图的代码段，以及显示的调用等 <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Data; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Configuration; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Collections; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Web; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Web.Security; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Web.UI; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Web.UI.WebControls; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Web.UI.WebControls.WebParts; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Web.UI.HtmlControls; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Drawing.Drawing2D; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Drawing.Imaging; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Drawing.Text; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Drawing; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />using System.Text; <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />public partial class png : System.Web.UI.Page <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" border="0" /><img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />    private readonly string ImagePath = "Validator.jpg"; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />    private static string gif = ""; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />    protected void Page_Load(object sender, EventArgs e) <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />    <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        switch (Request.QueryString["aa"]) <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />        <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            case "1": <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                gif = stxt(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                Session["gif"]= stxt(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                break; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            case "2": <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                gif = GetRandomint(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                 Session["gif"]= GetRandomint(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                break; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            case "3": <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                gif = RndNum(3); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                 Session["gif"]= RndNum(3); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                break; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            default: <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                gif = RndNum(3); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                 Session["gif"]= GetRandomint(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                break; <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />        } <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />         <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />        /**////创建Bmp位图 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        Bitmap bitMapImage = new System.Drawing.Bitmap(Server.MapPath(ImagePath)); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        Graphics graphicImage = Graphics.FromImage(bitMapImage); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />        /**////设置画笔的输出模式 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        graphicImage.SmoothingMode = SmoothingMode.HighSpeed; <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />        /**////添加文本字符串 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        graphicImage.DrawString(gif, new Font("Arial", 20, FontStyle.Bold), SystemBrushes.WindowText, new Point(0, 0)); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />        /**////设置图像输出的格式 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        Response.ContentType = "image/jpeg"; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />        /**////保存数据流 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        bitMapImage.Save(Response.OutputStream, ImageFormat.Jpeg); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />        /**////释放占用的资源 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        graphicImage.Dispose(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        bitMapImage.Dispose(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />    } 返回纯数字 <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" /> private String GetRandomint() <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" border="0" />    <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        Random random = new Random(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        return (random.Next(100000, 999999).ToString()); <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif" border="0" />    } 返回文字＼数字＼字母混合的 <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />public static String RndNum(int VcodeNum) <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" border="0" />    <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        String Vchar = "0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,W,X,Y,Z,呵,哈,弹,簧,秤,嬉,戏"; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        String[] VcArray = Vchar.Split(','); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        String VNum = ""; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        Random random = new Random(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        for (int i = 1; i <= VcodeNum; i++) <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />        <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            int iNum = 0; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            while ((iNum = Convert.ToInt32(VcArray.Length * random.NextDouble())) ==VcArray.Length ) <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />            <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                iNum = Convert.ToInt32(VcArray.Length * random.NextDouble()); <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />            } <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            VNum += VcArray[iNum]; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            // VNum += VcArray[Convert.ToInt32(VcArray.Length*random.NextDouble())]; <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />        } <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        return VNum; <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif" border="0" />    } 返回汉字的 <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" /> public static object[] CreateRegionCode(int strlength) <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" border="0" />        <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            //定义一个字符串数组储存汉字编码的组成元素 <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" /> string[] rBase=new String [16]<img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{"0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"}; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />             <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            Random rnd=new Random(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />         <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            //定义一个object数组用来 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> object[] bytes=new object[strlength]; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />            /**//**//**//*每循环一次产生一个含两个元素的十六进制字节数组，并将其放入bject数组中 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />             每个汉字有四个区位码组成 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />             区位码第1位和区位码第2位作为字节数组第一个元素 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />             区位码第3位和区位码第4位作为字节数组第二个元素 <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />            */ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            for(int i=0;i<strlength;i++) <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />            <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                //区位码第1位 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> int r1=rnd.Next(11,14); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                string str_r1=rBase[r1].Trim(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                //区位码第2位 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                rnd=new Random(r1*unchecked((int)DateTime.Now.Ticks)+i);//更换随机数发生器的种子避免产生重复值 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> int r2; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                if (r1==13) <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />                <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                    r2=rnd.Next(0,7); <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />                } <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                else <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />                <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                    r2=rnd.Next(0,16); <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />                } <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                string str_r2=rBase[r2].Trim(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                //区位码第3位 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                rnd=new Random(r2*unchecked((int)DateTime.Now.Ticks)+i); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                int r3=rnd.Next(10,16); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                string str_r3=rBase[r3].Trim(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                //区位码第4位 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                rnd=new Random(r3*unchecked((int)DateTime.Now.Ticks)+i); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                int r4; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                if (r3==10) <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />                <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                    r4=rnd.Next(1,16); <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />                } <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                else if (r3==15) <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />                <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                    r4=rnd.Next(0,15); <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />                } <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                else <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" />                <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                    r4=rnd.Next(0,16); <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />                } <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                string str_r4=rBase[r4].Trim(); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                //定义两个字节变量存储产生的随机汉字区位码 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> byte byte1=Convert.ToByte(str_r1 + str_r2,16); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                byte byte2=Convert.ToByte(str_r3 + str_r4,16); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                //将两个字节变量存储在字节数组中 <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" border="0" /> byte[] str_r=new byte[]<img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{byte1,byte2}; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                //将产生的一个汉字的字节数组放入object数组中 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                bytes.SetValue(str_r,i); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />                 <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" border="0" />            } <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />            return bytes; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif" border="0" />            } <img src="http://www.cnblogs.com/Images/OutliningIndicators/None.gif" border="0" />    private string stxt() <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" border="0" /><img src="http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" border="0" />    <img src="http://www.cnblogs.com/Images/dot.gif" border="0" />{ <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        Encoding gb = Encoding.GetEncoding("gb2312"); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        //调用函数产生4个随机中文汉字编码 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> object[] bytes = CreateRegionCode(3); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        //根据汉字编码的字节数组解码出中文汉字 <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> string str1 = gb.GetString((byte[])Convert.ChangeType(bytes[0], typeof(byte[]))); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        string str2 = gb.GetString((byte[])Convert.ChangeType(bytes[1], typeof(byte[]))); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        string str3 = gb.GetString((byte[])Convert.ChangeType(bytes[2], typeof(byte[]))); <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" /> <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        string txt = str1 + str2 + str3; <img src="http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif" border="0" />        return txt; <img src="http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif" border="0" />    } 我们调用页的代码如下 ＨＴＭＬ代码 

6 个回复
- top5***（用户）回复于：2008-07-04 11:28:00
 
 很差劲啊。
- hmy11***（用户）回复于：2008-04-23 13:49:00
 
 怎么没有sln哦。。怎么运行啊。。偶是菜鸟。。
- laisf***（用户）回复于：2008-04-23 16:01:00
 
 怎么看不懂呢？是验证输入的字符类型吗？
- 25112***（用户）回复于：2008-04-21 20:35:00
 
 :) 我也看看呢
- robrk***（用户）回复于：2008-04-25 03:28:00
 
 正需要，谢谢楼主，
- lover***（用户）回复于：2012-12-14 23:53:48
 
 给力。但是我这为啥不显示呢

源码信息

字母\数字\汉字混合的验证码源码

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源码信息

字母\数字\汉字混合的验证码源码

最新源码评论

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