验证码怎么显示不出来???

Question

是这样的,我把网站发布到本地iis(5.1)的时候,进行登陆的时候验证码显示不出来 为XX,
而在vs2005里运行正常
这是验证码生成代码:
public partial class Image : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
       
        CreateCodeImage(GenerateCheckCode(4));
    }
  
    public string GenerateCheckCode(int CodeNumber )
    {
        string Str = "0123456789";
        char[] ChrStr = Str.ToCharArray();
        string CheckCode = string.Empty;
        Random rd = new Random();
        for (int i = 0; i < CodeNumber; i++)
        {
            CheckCode += Str.Substring(rd.Next(0,Str.Length),1);
        }
        return CheckCode;
          
    }
    public void CreateCodeImage(string checkCode)
    {        if (checkCode == null || checkCode.Trim() == string.Empty)
        {
            return;
        }
        Session["codeimage"] = checkCode;
        System.Drawing.Bitmap image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 12.5)), 22);//设置验证图片的长度和高度
        Graphics Gh = Graphics.FromImage(image);
        try
        {
            Random rd = new Random();
            //画图片的背景噪音点
            Gh.Clear(Color.White);
            for (int i = 0; i < 25; i++)
            {
                int x1 = rd.Next(image.Width);//
                int x2 = rd.Next(image.Width);
                int y1 = rd.Next(image.Height);
                int y2 = rd.Next(image.Height);
                Gh.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2);
            }
            Font font = new Font("Arial", 12, FontStyle.Bold);
            System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height),
                Color.Red, Color.DarkRed, 1.2F, true);
            Gh.DrawString(checkCode, font, brush, 2, 2);
            //画图片的背景噪音点
            for (int i = 0; i < 100; i++)
            {
                int x = rd.Next(image.Width);
                int y = rd.Next(image.Height);
                image.SetPixel(x, y, Color.FromArgb(rd.Next()));
            }
            //画图片的边框线
            Gh.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 = "imgae/Gif";
            Response.BinaryWrite(ms.ToArray());        }
        catch(Exception ex)
        {
            Response.Write(ex.Message);
            
        }
        finally
        {
            Gh.Dispose();
            image.Dispose();
        }    }
}
这是调用:
protected void btSubmit_Click(object sender, EventArgs e)
    {
        string strUserName = this.txtUserName.Text.Trim();
        string strUserPwd = this.txtUserPwd.Text.Trim();
        DateTime LastTime = DateTime.Now;
        DataTable dt = Users.ValidateAdministratorLogin(strUserName);
        try
        {
            if (dt.Rows.Count > 0)
            {
                if (dt.Rows[0][2].ToString() == strUserPwd.ToString())//如果密码正确
                {
                    string checkcode = Session["codeimage"].ToString();
                    if (txtValidateNumber.Text.Trim() == checkcode.ToString())
                    {
                        Session["userid"] = dt.Rows[0][0];                   
                        Session["username"] = strUserName;
                        Session["userpwd"] = strUserPwd;
                        string roleid = dt.Rows[0][3].ToString();
                        Session["roleid"] = roleid;
                        if (roleid == "1")//如果是超级管理员                                               
                        {
                            Users.UpdateAdminLastLoginTime(Convert.ToInt32(dt.Rows[0][0]), LastTime);
                            Response.Redirect("admin.aspx?name=" + Server.UrlDecode(strUserName) + "");
                        }
                        else
                        {
                            Users.UpdateAdminLastLoginTime(Convert.ToInt32(dt.Rows[0][0]), LastTime);
                            Response.Redirect("managenews.aspx?name=" + Server.UrlDecode(strUserName) + "");
                        }
                    }
                    else
                    {
                        lblinfo.Text = "验证码错误!";
                        lblError.Text = "";
                    }
                }
                else
                {
                    lblError.Visible = true;
                    lblError.Text = "密码错误！";
                    //Response.Write("<script>alert('密码错误！')</script>");
                }
            }
            else
            {
                lblError.Visible = true;
                lblError.Text = "用户不存在！";
                //Response.Write("<script>alert('用户不存在！')</script>");
            }
        }
        catch (Exception ex)
        {
            Response.Write(ex.Message) ;
        }
      
    }<asp:Image ID="ImageValidate" runat="server" AlternateText="验证码"   ImageUrl="~/Image.aspx" DescriptionUrl="~/Image.aspx"/>
怎么会这样呢?各位大虾帮帮忙吧!

Answer 1

public   partial   class   Image//重了   :   System.Web.UI.Page 
和.netframework的Image类重名了，换个类名