验证码实例(成功)

验证码生成类ValidateNumber.cs

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Web.UI;
using System.Drawing.Drawing2D;
using System.IO;
}

Number.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Number.aspx.cs" Inherits="Other_Number" %>

Number.aspx.cs

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;

public partial class Other_Number : System.Web.UI.Page
}

页面代码

<iframe marginheight="0" marginwidth="0" src="Number.aspx?Number=<%=Number %>" frameborder="no"
                width="50" height="22" scrolling="no"></iframe>
            <asp:TextBox ID="TextBox1" runat="server" Width="99px"></asp:TextBox><br />
            <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">看不清</asp:LinkButton><asp:Button
                ID="Button1" runat="server" Text="确定" OnClick="Button1_Click" />

页面后台代码

public static string Number;
    private ValidateNumber zbx = new ValidateNumber();
    protected void Page_Load(object sender, EventArgs e)
    }