vs2005下彩色验证码的实现(可自由定义是否加入干扰点、验证码位数等验证码显示效果)
转自:http://www.cnblogs.com/zbqy/archive/2007/04/29/731712.html
vs2005下彩色验证码的实现(可自由定义是否加入干扰点、验证码位数等验证码显示效果)
一、效果如下:
![](https://www.cnblogs.com/images/cnblogs_com/zm235/test.jpg)
二、项目中添加一个类命名为(可任选)在此类中添加代码
using System;
using System.Web;
using System.IO;
using System.Drawing;
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
/// <summary>
/// Class1 的摘要说明
/// </summary>
public class zhangming
{
public class VerifyCode
{
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
#region 验证码长度(默认5个验证码的长度)
int length = 5;
public int Length
{
get{ return length; }
set{ length = value; }
}
#endregion
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
#region 验证码字体大小(默认10像素)
int fontSize = 10;
public int FontSize
{
get{ return fontSize; }
set{ fontSize = value; }
}
#endregion
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
边框补(默认1像素)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
是否输出燥点(默认不输出)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
输出燥点的颜色(默认灰色)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
自定义背景色(默认白色)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
自定义随机颜色数组
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
自定义字体数组
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
自定义随机码字符串序列(使用逗号分隔)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
生成校验码图片
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
将创建好的图片输出到页面
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
生成随机字符码
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
}
}
三、新建GetImageCode.aspx页面前台添加代码(实际前台代码无内容)
<body>
<form id="form1" runat="server">
<div>
</div>
</form>
</body>
四、添加GetImageCode.aspx.cs后台代码
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.IO;
using System.Drawing;
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
public partial class Default4 : System.Web.UI.Page
{
验证码长度(默认5个验证码的长度)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
验证码字体大小(默认10像素)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
边框补(默认1像素)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
是否输出燥点(默认输出)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
输出燥点的颜色(默认灰色)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
自定义背景色(默认白色)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
自定义随机颜色数组
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
自定义字体数组
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
#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";
#endregion
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
protected void Page_Load(object sender, EventArgs e)
{
zhangming.VerifyCode v = new zhangming.VerifyCode();
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
v.Length = this.length;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
v.FontSize = this.fontSize;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
v.Chaos = this.chaos;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
v.BackgroundColor = this.backgroundColor;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
v.ChaosColor = this.chaosColor;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
v.CodeSerial = this.codeSerial;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
v.Colors = this.colors;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
v.Fonts = this.fonts;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
v.Padding = this.padding;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
string code = v.CreateVerifyCode(); //取随机码
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
v.CreateImageOnPage(code, this.Context); // 输出图片
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
//Session["CheckCode"] = code.ToLower(); // 使用Session["CheckCode"]取验证码的值
Response.Cookies.Add(new HttpCookie("CheckCode", code.ToLower()));// 使用Cookies取验证码的值
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
}
}
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Image id="Image1" runat="server" ImageUrl="GetImageCode.aspx"></asp:Image>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click"
Text="Button" />
<br />
<asp:Label ID="Label1" runat="server"></asp:Label></div>
</form>
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
//Session["CheckCode"] = "";
Response.Cookies.Add(new HttpCookie("CheckCode", ""));
}
}
protected void Button1_Click(object sender, EventArgs e)
{
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
if (Request.Cookies["CheckCode"] == null)
{
Label1.Text = "您的浏览器设置已被禁用 Cookies,您必须设置浏览器允许使用 Cookies 选项后才能使用本系统。";
Label1.Visible = true;
return;
}
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
if (String.Compare(Request.Cookies["CheckCode"].Value, TextBox1.Text.ToString().Trim(), true) != 0)
{
Label1.Text = "验证码错误,请输入正确的验证码。";
Label1.Visible = true;
return;
}
else
{
Label1.Text = "验证码OK。";
Label1.Visible = true;
}
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
}
![](https://www.cnblogs.com/images/cnblogs_com/zm235/test.jpg)
二、项目中添加一个类命名为(可任选)在此类中添加代码
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
三、新建GetImageCode.aspx页面前台添加代码(实际前台代码无内容)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
四、添加GetImageCode.aspx.cs后台代码
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
五、验证码的使用(在Test.aspx页面加入<asp:Image id="Image1" runat="server" ImageUrl="~/GetVerifyCode.aspx"></asp:Image>)即实现验证码
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
六、Test.aspx.cs后台代码
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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