请问使用母版页的情况下要怎么使用验证码呢?

Question

我在登陆页里加入一个image控件,然后设置图片路径为checkcode.aspx而在checkcode.aspx.cs页里代码如下:protected void Page_Load(object sender, EventArgs e)
    {
        this.CreateCheckCodeImage(GenerateCheckCode());
    }    private string GenerateCheckCode()
    {
        int number;
        char code;
        string checkCode = String.Empty;        System.Random random = new Random();        for (int i = 0; i < 5; i++)
        {
            number = random.Next();            if (number % 2 == 0)
                code = (char)('0' + (char)(number % 10));
            else
                code = (char)('A' + (char)(number % 26));            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 < 25; 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);
            }            Font font = new System.Drawing.Font("Arial", 12, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic));
            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();
        }
    }我的情况是只要套用母版页,登陆页只会显示图片,那些登陆文本框和按钮都不见了,如果没套用母版页的话就可以全部正常显示,我要如何解决该问题呢?

Answer 1

<table width="200" border="0" cellspacing="0" cellpadding="0">
                        <tr>
                        <td colspan="3" bgcolor="skyblue" style="width: 425px; height: 156px; font-weight: bold;" align="center" valign="bottom">
                            登陆系统<table width="282" height="135" border="0" cellpadding="1" cellspacing="1">
                            <tr>
                            <td bgcolor="#FFFFFF" style="width: 68px">&nbsp;用户：</td>
                            <td width="188" bgcolor="#FFFFFF" align="left">&nbsp;<asp:TextBox ID="UserName" runat="server" Width="115px"></asp:TextBox></td>
                            </tr>
                            <tr>
                            <td bgcolor="#FFFFFF" style="width: 68px">&nbsp;密码：</td>
                            <td bgcolor="#FFFFFF" align="left">&nbsp;<asp:TextBox ID="Password" runat="server" TextMode="Password" Width="115px"></asp:TextBox></td>
                            </tr>
                            <tr>
                            <td bgcolor="#FFFFFF" style="width: 68px">&nbsp;验证码：</td>
                            <td bgcolor="#FFFFFF" align="left">&nbsp;<asp:TextBox ID="CheckWord" runat="server" Width="115px"></asp:TextBox>
                                <img src="checkcode.aspx" /></td>
                            </tr>
                            <tr>
                            <td colspan="2" bgcolor="#FFFFFF">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
            &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp;<asp:Button ID="LoginBtn" runat="server" Text="登陆" OnClick="LoginBtn_Click" /></td>
                            </tr>
                            </table>