.net 验证码

[ww68069362]

做一个登陆框，需要添加一个验证码，不用太复杂，4个字符就够了，由字符和数字组成。求代码

[小_虎]

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using System.Drawing;  //添加引用

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        CreateCheckCodeImage(GenerateCheckCode());
    }

    private string GenerateCheckCode()
    {
        int number;
        char code;
        string checkCode = String.Empty;

        Random random = new Random();

        for (int i = 0; i < 4; i++)
        {
            number = random.Next();

           
           code = (char)('0' + (char)(number % 10));
         

            checkCode += code.ToString();
        }

        Response.Cookies.Add(new HttpCookie("CheckCode", checkCode));

        return checkCode;
    }

    private void CreateCheckCodeImage(string checkCode)
    {
        if (checkCode == null || checkCode.Trim() == String.Empty)
            return;

        System.Drawing.Bitmap image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 12.5)), 22);
        Graphics g = Graphics.FromImage(image);

        try
        {
            //生成随机生成器
            Random random = new Random();

            //清空图片背景色
            g.Clear(Color.White);

            //画图片的背景噪音线
            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.Black), x1, y1, x2, y2);
            }

            Font font = new System.Drawing.Font("Arial", 12, (System.Drawing.FontStyle.Bold));
            System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true);
            g.DrawString(checkCode, font, brush, 2, 2);

            //画图片的前景噪音点
            for (int i = 0; i < 100; i++)
            {
                int x = random.Next(image.Width);
                int y = random.Next(image.Height);

                image.SetPixel(x, y, Color.FromArgb(random.Next()));
            }

            //画图片的边框线
            g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1);

            System.IO.MemoryStream ms = new System.IO.MemoryStream();
            image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
            Response.ClearContent();
            Response.ContentType = "image/Gif";
            Response.BinaryWrite(ms.ToArray());
        }
        finally
        {
            g.Dispose();
            image.Dispose();
        }
    }
}

这个是页面后台文件，前台部要任何东西。

调用的时候：
<img id="Img1" alt="看不清，请点击我！" onclick="this.src=this.src+'?'" src="CheckCode.aspx"
style="width: 73px; height: 22px" align="left" />

[ww68069362]

3楼的验证码可以用，但是为什么页面的其他控件就不显示了呢？

[Jelly_tracy]

mark 一下

[zuoming120]

public class RandomCode
{
public RandomCode()
{
//构造函数
//页面调用Response.BinaryWrite(SystemDAL.RandomCode.CreateImage().ToArray());
}

#region 生成随机的验证码
/*产生验证码*/
private static string CreateCode()
{

string so = "1,2,3,4,5,6,7,8,9,0,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z";
string[] strArr = so.Split(',');
string code = "";
Random rand = new Random();
for (int i = 0; i < 4; i++)
{
code += strArr[rand.Next(0, strArr.Length)];
}
return code;
}

/*产生验证图片*/
public static MemoryStream CreateImage()
{

Bitmap image = new Bitmap(60, 20);
Graphics g = Graphics.FromImage(image);
WebColorConverter ww = new WebColorConverter();
g.Clear((Color)ww.ConvertFromString("#E8E8E8"));

Random random = new Random();
//画图片的背景噪音线
for (int i = 0; i < 12; 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.LightGray), x1, y1, x2, y2);
}
Font font = new Font("Arial", 15, FontStyle.Bold | FontStyle.Italic);
System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(
new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.Gray, 1.2f, true);
g.DrawString(CreateCode(), font, brush, 0, 0);

//画图片的前景噪音点
for (int i = 0; i < 10; i++)
{
int x = random.Next(image.Width);
int y = random.Next(image.Height);
image.SetPixel(x, y, Color.White);
}

//画图片的边框线
g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1);

System.IO.MemoryStream ms = new System.IO.MemoryStream();
image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
g.Dispose();
image.Dispose();

return ms;
}

#endregion

}

[stevenloveyou]

[Quote=引用 5 楼 ww68069362 的回复:]
3楼的验证码可以用，但是为什么页面的其他控件就不显示了呢？
[/Quote]

怎么个情况，细说下

[ww68069362]

[Quote=引用 8 楼 stevenloveyou 的回复:]
引用 5 楼 ww68069362 的回复:
3楼的验证码可以用，但是为什么页面的其他控件就不显示了呢？


怎么个情况，细说下
[/Quote]
我页面代码是
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="CheckCode" CssClass="input" runat="server" Width="60px" MaxLength="20" AutoCompleteType="Disabled"></asp:TextBox>
 <img src="CheckCode.aspx" id="checkcode_img" name="checkcode" alt="请输入验证码!" />
<a title="刷新验证码" href="#" onclick="javascript:document.getElementById('checkcode_img').src='CheckCode.aspx?id='+Math.random();return false;">看不清，换张图片？</a>
<asp:TextBox ID="hahaha" runat="server"></asp:TextBox>
</div>
</form>
</body>

后台和类文件，我直接按照你说的复制过去，但是TextBox控件页面上显示不出来

[stevenloveyou]

.input {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	color: #000000;
	height:21px;
	text-decoration: none;
	font-size: 12px;
	border: 1px solid #80CCFF;
	background-color: #FFFFFF;
}

[ww68069362]

问题是，我的页面不仅仅是一个textbox控件，还有其他那么多，不能就因为一个验证码就要去给那些所有空间table添加样式表吧

[sh_suyuelin]

好热闹。下次玩玩

[aspnet1988627]

直接找个第三方控件。

[stevenloveyou]

[Quote=引用 11 楼 ww68069362 的回复:]
问题是，我的页面不仅仅是一个textbox控件，还有其他那么多，不能就因为一个验证码就要去给那些所有空间table添加样式表吧
[/Quote]

不知道是什么问题，我又试了下，不加样式，TextBox控件的显示也没问题呀

[ww68069362]

[Quote=引用 14 楼 stevenloveyou 的回复:]
引用 11 楼 ww68069362 的回复:
问题是，我的页面不仅仅是一个textbox控件，还有其他那么多，不能就因为一个验证码就要去给那些所有空间table添加样式表吧


不知道是什么问题，我又试了下，不加样式，TextBox控件的显示也没问题呀
[/Quote]
我重新新建了一个项目，还是没法，晕死，就是不显示其他控件，要不你加我QQ帮我弄一下，987849949

[super_youjibin]

ding..............

[YnSky]

呵呵.太多了.

[rczjp]

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Drawing;

namespace VerifyColorCode
{
    public partial class VerifyCode : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            VerifyCode v = new VerifyCode();
            v.Length = this.length;
            v.FontSize = this.fontSize;
            v.Chaos = this.chaos;
            v.BackgroundColor = this.backgroundColor;
            v.ChaosColor = this.chaosColor;
            v.CodeSerial = this.codeSerial;
            v.Colors = this.colors;
            v.Fonts = this.fonts;
            v.Padding = this.padding;
            string code = v.CreateVerifyCode();                //取随机码
            v.CreateImageOnPage(code, this.Context);        // 输出图片

            Response.Cookies.Add(new HttpCookie("CheckCode", code.ToUpper()));// 使用Cookies取验证码的值
        }

        #region 验证码长度(默认6个验证码的长度)
        int length = 4;
        public int Length
        {
            get { return length; }
            set { length = value; }
        }
        #endregion

        #region 验证码字体大小(为了显示扭曲效果，默认40像素，可以自行修改)
        int fontSize = 25;
        public int FontSize
        {
            get { return fontSize; }
            set { fontSize = value; }
        }
        #endregion

        #region 边框补(默认1像素)
        int padding = 2;
        public int Padding
        {
            get { return padding; }
            set { padding = value; }
        }
        #endregion

        #region 是否输出燥点(默认不输出)
        bool chaos = true;
        public bool Chaos
        {
            get { return chaos; }
            set { chaos = value; }
        }
        #endregion

        #region 输出燥点的颜色(默认灰色)
        Color chaosColor = Color.LightGray;
        public Color ChaosColor
        {
            get { return chaosColor; }
            set { chaosColor = value; }
        }
        #endregion

        #region 自定义背景色(默认白色)
        Color backgroundColor = Color.White;
        public Color BackgroundColor
        {
            get { return backgroundColor; }
            set { backgroundColor = value; }
        }
        #endregion

        #region 自定义随机颜色数组
        Color[] colors = { Color.Black, Color.Red, Color.DarkBlue, Color.Green, Color.Orange, Color.Brown, Color.DarkCyan, Color.Purple };
        public Color[] Colors
        {
            get { return colors; }
            set { colors = value; }
        }
        #endregion

        #region 自定义字体数组
        string[] fonts = { "Arial", "Georgia" };
        public string[] Fonts
        {
            get { return fonts; }
            set { fonts = value; }
        }
        #endregion

        #region 自定义随机码字符串序列(使用逗号分隔)
        string codeSerial = "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,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z";
        public string CodeSerial
        {
            get { return codeSerial; }
            set { codeSerial = value; }
        }
        #endregion

        #region 产生波形滤镜效果

        private const double PI = 3.1415926535897932384626433832795;
        private const double PI2 = 6.283185307179586476925286766559;

        /// <summary>
        /// 正弦曲线Wave扭曲图片（Edit By 51aspx.com）
        /// </summary>
        /// <param name="srcBmp">图片路径</param>
        /// <param name="bXDir">如果扭曲则选择为True</param>
        /// <param name="nMultValue">波形的幅度倍数，越大扭曲的程度越高，一般为3</param>
        /// <param name="dPhase">波形的起始相位，取值区间[0-2*PI)</param>
        /// <returns></returns>
        public System.Drawing.Bitmap TwistImage(Bitmap srcBmp, bool bXDir, double dMultValue, double dPhase)
        {
            System.Drawing.Bitmap destBmp = new Bitmap(srcBmp.Width, srcBmp.Height);

            // 将位图背景填充为白色
            System.Drawing.Graphics graph = System.Drawing.Graphics.FromImage(destBmp);
            graph.FillRectangle(new SolidBrush(System.Drawing.Color.White), 0, 0, destBmp.Width, destBmp.Height);
            graph.Dispose();

            double dBaseAxisLen = bXDir ? (double)destBmp.Height : (double)destBmp.Width;

            for (int i = 0; i < destBmp.Width; i++)
            {
                for (int j = 0; j < destBmp.Height; j++)
                {
                    double dx = 0;
                    dx = bXDir ? (PI2 * (double)j) / dBaseAxisLen : (PI2 * (double)i) / dBaseAxisLen;
                    dx += dPhase;
                    double dy = Math.Sin(dx);

                    // 取得当前点的颜色
                    int nOldX = 0, nOldY = 0;
                    nOldX = bXDir ? i + (int)(dy * dMultValue) : i;
                    nOldY = bXDir ? j : j + (int)(dy * dMultValue);

                    System.Drawing.Color color = srcBmp.GetPixel(i, j);
                    if (nOldX >= 0 && nOldX < destBmp.Width
                     && nOldY >= 0 && nOldY < destBmp.Height)
                    {
                        destBmp.SetPixel(nOldX, nOldY, color);
                    }
                }
            }

            return destBmp;
        }



        #endregion

        #region 生成校验码图片
        public Bitmap CreateImageCode(string code)
        {
            int fSize = FontSize;
            int fWidth = fSize + Padding;

            int imageWidth = (int)(code.Length * fWidth) + 4 + Padding * 2;
            int imageHeight = fSize * 2 + Padding;

            System.Drawing.Bitmap image = new System.Drawing.Bitmap(imageWidth, imageHeight);

            Graphics g = Graphics.FromImage(image);

            g.Clear(BackgroundColor);

            Random rand = new Random();

            //给背景添加随机生成的燥点
            if (this.Chaos)
            {

                Pen pen = new Pen(ChaosColor, 0);
                int c = Length * 10;

                for (int i = 0; i < c; i++)
                {
                    int x = rand.Next(image.Width);
                    int y = rand.Next(image.Height);

                    g.DrawRectangle(pen, x, y, 1, 1);
                }
            }

            int left = 0, top = 0, top1 = 1, top2 = 1;

            int n1 = (imageHeight - FontSize - Padding * 2);
            int n2 = n1 / 4;
            top1 = n2;
            top2 = n2 * 2;

            Font f;
            Brush b;

            int cindex, findex;

            //随机字体和颜色的验证码字符
            for (int i = 0; i < code.Length; i++)
            {
                cindex = rand.Next(Colors.Length - 1);
                findex = rand.Next(Fonts.Length - 1);

                f = new System.Drawing.Font(Fonts[findex], fSize, System.Drawing.FontStyle.Bold);
                b = new System.Drawing.SolidBrush(Colors[cindex]);

                if (i % 2 == 1)
                {
                    top = top2;
                }
                else
                {
                    top = top1;
                }

                left = i * fWidth;

                g.DrawString(code.Substring(i, 1), f, b, left, top);
            }

            //画一个边框 边框颜色为Color.Gainsboro
            g.DrawRectangle(new Pen(Color.Gainsboro, 0), 0, 0, image.Width - 1, image.Height - 1);
            g.Dispose();

            //产生波形（Add By 51aspx.com）
            image = TwistImage(image, true, 8, 4);

            return image;
        }
        #endregion

        #region 将创建好的图片输出到页面
        public void CreateImageOnPage(string code, HttpContext context)
        {
            System.IO.MemoryStream ms = new System.IO.MemoryStream();
            Bitmap image = this.CreateImageCode(code);

            image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);

            context.Response.ClearContent();
            context.Response.ContentType = "image/Jpeg";
            context.Response.BinaryWrite(ms.GetBuffer());

            ms.Close();
            ms = null;
            image.Dispose();
            image = null;
        }
        #endregion

        #region 生成随机字符码
        public string CreateVerifyCode(int codeLen)
        {
            if (codeLen == 0)
            {
                codeLen = Length;
            }

            string[] arr = CodeSerial.Split(',');

            string code = "";

            int randValue = -1;

            Random rand = new Random(unchecked((int)DateTime.Now.Ticks));

            for (int i = 0; i < codeLen; i++)
            {
                randValue = rand.Next(0, arr.Length - 1);

                code += arr[randValue];
            }

            return code;
        }
        public string CreateVerifyCode()
        {
            return CreateVerifyCode(0);
        }
        #endregion

    }

}

[tiandi0074]

有个验证码控件，具体名字忘了，但挺好用

[优 秀。]

//创建一个一般处理程序：imgHandler.ashx
//调用方法为: <img src="imgHandler.ashx" alt="验证码" />

<%@ WebHandler Language="C#" Class="imgHandler" %>

using System;
using System.Web;
using System.IO;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using System.Web.SessionState;

/// <summary>
/// ImageValidate 的摘要说明
/// </summary>
public class imgHandler : IHttpHandler
{
public imgHandler()
{
}
#region IHttpHandler 成员
public bool IsReusable
{
get {
return false;
}
}

public void ProcessRequest(HttpContext context)
{
string VNum = RndNum(4); //调用生成随机数的方法
Bitmap Img = new Bitmap(90, 25); //定义图像的大小，生成图像的实例
Graphics g = Graphics.FromImage(Img); //从Img对象生成新的Graphics对象
System.Random random = new Random();
//验证码颜色集合
Color[] c = { Color.Black, Color.Red, Color.DarkBlue, Color.Green, Color.Orange, Color.Brown, Color.DarkCyan, Color.Purple };
//验证码字体集合
string[] fonts = { "Verdana", "Microsoft Sans Serif", "Comic Sans MS", "Arial", "宋体" };

g.Clear(Color.White); //背景设为白色
for (int i = 0; i < 90; i++) //在随机位置画背景点
{
int x = random.Next(Img.Width);
int y = random.Next(Img.Height);
g.DrawRectangle(new Pen(Color.LightGray, 0), x, y, 1, 1);
}
for (int i = 0; i < VNum.Length; i++) //验证码绘制在g中
{
int cindex = random.Next(7); //随机颜色索引值
int findex = random.Next(5); //随机字体索引值
Font f = new Font(fonts[findex], 12, System.Drawing.FontStyle.Bold); //设置字体风格
Brush b = new System.Drawing.SolidBrush(c[cindex]); //设置字体的颜色
int ii = 4;
if ((i + 1) % 2 == 0) //控制验证码不在同一高度
{
ii = 2;
}
g.DrawString(VNum.Substring(i, 1), f, b, 3 + (i * 20), ii); //绘制一个验证字符
}
context.Response.ContentType = "image/gif"; //设置输出图片的路径
Img.Save(context.Response.OutputStream, ImageFormat.Gif); //将此图像以gif图像文件的格式保存到输出流中
context.Application["validateImage"] = VNum; //将验证码存入全局变量中
g.Dispose(); //回收资源
Img.Dispose();
context.Response.End();
}
#endregion

/// <summary>
/// 该方法用于生成指定位数的随机数
/// </summary>
/// <param name="VcodeNum">参数是随机数的位数</param>
/// <returns>返回一个随机数字符串</returns>
public static string RndNum(int VcodeNum)
{
string Vchar = "1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,P,Q,R,S,T,U,V,W,X,Y,Z";
string[] VcArray = Vchar.Split(new Char[] { ',' }); //拆分成数组
string VNum = ""; //产生的随机数
int temp = -1; //记录上次随机数值，尽量避免生产几个一样的随机数
Random rand = new Random();
for (int i = 1; i < VcodeNum + 1; i++)
{
if (temp != -1)
{
rand = new Random(i * temp * unchecked((int)DateTime.Now.Ticks));
}
int t = rand.Next(33);
if (temp != -1 && temp == t)
{
return RndNum(VcodeNum);
}
temp = t;
VNum += VcArray[t];
}
return VNum;
}
}

[ww68069362]

[Quote=引用 20 楼 judyliuqiang 的回复:]
//创建一个一般处理程序：imgHandler.ashx
//调用方法为: <img src="imgHandler.ashx" alt="验证码" />

<%@ WebHandler Language="C#" Class="imgHandler" %>

using System;
using System.Web;
using System.IO;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using System.Web.SessionState;

/// <summary>
/// ImageValidate 的摘要说明
/// </summary>
public class imgHandler : IHttpHandler
{
    public imgHandler()
    {
    }
    #region IHttpHandler 成员
    public bool IsReusable
    {
        get {
            return false;
        }
    }

    public void ProcessRequest(HttpContext context)
    {
        string VNum = RndNum(4);              //调用生成随机数的方法
        Bitmap Img = new Bitmap(90, 25);      //定义图像的大小，生成图像的实例
        Graphics g = Graphics.FromImage(Img);  //从Img对象生成新的Graphics对象 
        System.Random random = new Random();
        //验证码颜色集合
        Color[] c = { Color.Black, Color.Red, Color.DarkBlue, Color.Green, Color.Orange, Color.Brown, Color.DarkCyan, Color.Purple };
        //验证码字体集合
        string[] fonts = { "Verdana", "Microsoft Sans Serif", "Comic Sans MS", "Arial", "宋体" };
       
        g.Clear(Color.White);          //背景设为白色
        for (int i = 0; i < 90; i++)    //在随机位置画背景点
        {
            int x = random.Next(Img.Width);
            int y = random.Next(Img.Height);
            g.DrawRectangle(new Pen(Color.LightGray, 0), x, y, 1, 1);
        }
        for (int i = 0; i < VNum.Length; i++)    //验证码绘制在g中
        {
            int cindex = random.Next(7);    //随机颜色索引值
            int findex = random.Next(5);    //随机字体索引值
            Font f = new Font(fonts[findex], 12, System.Drawing.FontStyle.Bold); //设置字体风格
            Brush b = new System.Drawing.SolidBrush(c[cindex]);  //设置字体的颜色
            int ii = 4;
            if ((i + 1) % 2 == 0)    //控制验证码不在同一高度
            {
                ii = 2;
            }
            g.DrawString(VNum.Substring(i, 1), f, b, 3 + (i * 20), ii); //绘制一个验证字符
        }
        context.Response.ContentType = "image/gif";              //设置输出图片的路径
        Img.Save(context.Response.OutputStream, ImageFormat.Gif); //将此图像以gif图像文件的格式保存到输出流中
        context.Application["validateImage"] = VNum;  //将验证码存入全局变量中
        g.Dispose();  //回收资源
        Img.Dispose();
        context.Response.End();
    }
    #endregion

    /// <summary>
    /// 该方法用于生成指定位数的随机数
    /// </summary>
    /// <param name="VcodeNum">参数是随机数的位数 </param>
    /// <returns>返回一个随机数字符串 </returns>
    public static string RndNum(int VcodeNum)
    {
        string Vchar = "1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,P,Q,R,S,T,U,V,W,X,Y,Z";
        string[] VcArray = Vchar.Split(new Char[] { ',' }); //拆分成数组
        string VNum = ""; //产生的随机数
        int temp = -1;    //记录上次随机数值，尽量避免生产几个一样的随机数
        Random rand = new Random();
        for (int i = 1; i < VcodeNum + 1; i++)
        {
            if (temp != -1)
            {
                rand = new Random(i * temp * unchecked((int)DateTime.Now.Ticks));
            }
            int t = rand.Next(33);
            if (temp != -1 && temp == t)
            {
                return RndNum(VcodeNum);
            }
            temp = t;
            VNum += VcArray[t];
        }
        return VNum;
    }
}

[/Quote]
怎么样在一个textbox里面判断输入的字符是否和验证码相等呢？

[hyl200255]

学习了

[luyichenn]

[Quote=引用 9 楼 ww68069362 的回复:]
引用 8 楼 stevenloveyou 的回复:
引用 5 楼 ww68069362 的回复:
3楼的验证码可以用，但是为什么页面的其他控件就不显示了呢？


怎么个情况，细说下

我页面代码是
<body>
    <form id="form1" runat="server">
    <div>
<asp:TextBox ID="CheckCode" CssClass="input" runat="server" Width="60px" MaxLength="20" AutoCompleteType="Disabled"> </asp:TextBox>
                          <img src="CheckCode.aspx" id="checkcode_img" name="checkcode" alt="请输入验证码!" />
                        <a title="刷新验证码" href="#" onclick="javascript:document.getElementById('checkcode_img').src='CheckCode.aspx?id='+Math.random();return false;">看不清，换张图片？ </a>
<asp:TextBox ID="hahaha" runat="server"> </asp:TextBox>
    </div>
    </form>
</body>

后台和类文件，我直接按照你说的复制过去，但是TextBox控件页面上显示不出来
[/Quote]
我也是一样问题，LZ怎么解决的