谁能给个比较好看的验证码程序啊
网上找了一些
看有没有更好的
[解决办法]
我刚好自己写了个程序！给分！
code.aspx页面代码！
<%@ Page language= "c# " Codebehind= "code.aspx.cs " AutoEventWireup= "false " Inherits= "ValidCode.CreateImage " %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN " >
<HTML>
<HEAD>
<title> code </title>
<meta name= "GENERATOR " Content= "Microsoft Visual Studio .NET 7.1 ">
<meta name= "CODE_LANGUAGE " Content= "C# ">
<meta name= "vs_defaultClientScript " content= "JavaScript ">
<meta name= "vs_targetSchema " content= "http://schemas.microsoft.com/intellisense/ie5 ">
</HEAD>
<body MS_POSITIONING= "GridLayout ">
<form id= "Form1 " method= "post " runat= "server ">
<FONT face= "宋体 "> </FONT>
</form>
</body>
</HTML>
------------------------------------------------
code.aspx.cs 的代码：
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
namespace ValidCode
{
/// <summary>
/// 随机产生验证码，并将验证码绘制到图片上。
/// </summary>
public class CreateImage : System.Web.UI.Page
{
/// <summary>
/// 生成验证码。
/// </summary>
/// <returns> </returns>
private string GenerateCheckCode()
{
int number;
char code;
string checkCode = String.Empty;
// 声明并实例化随机数对象。
Random random = new Random( unchecked((int)DateTime.Now.Ticks));
for(int i=0; i <5; i++)
{
number = random.Next(1000);
if(number < 500)
//48在ASC码表中表示0!
//65在ASC码表中表示字母表中的A!~不是a!
code = (char)(48 + (number % 10));
else
code = (char)(65 + (number % 26));
checkCode += code.ToString();
}
// 将验证码保存到Session中。
Session[ "CheckCode "] = checkCode;
return checkCode;
}
/// <summary>
/// 利用生成的验证码绘图。
/// </summary>
/// <param name= "checkCode "> 验证码 </param>
private void CreateCheckCodeImage(string checkCode)
{
if(checkCode == null || checkCode.Trim() == String.Empty)
return;
// 声明并实例化一个画板对象。
Bitmap image = new 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();
// 设置图片背景色
g.Clear(Color.White);
//画图片的背景噪音线
for(int i=0; i <50; 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.AliceBlue), 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);
// 将验证码绘制到画板上。
g.DrawString(checkCode, font, brush, 2, 2);
//画图片的前景噪音点
for(int i=0; i <300; 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.Png);
// 将输出缓冲区清空。
Response.ClearContent();
Response.Expires = 0;
Response.ContentType = "image/Gif ";
Response.BinaryWrite( ms.ToArray() );
ms.Close();
}
finally
{
// 清空对象。
g.Dispose();
image.Dispose();
}
}
private void Page_Load(object sender, System.EventArgs e)
{
CreateCheckCodeImage( GenerateCheckCode() );
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
}
}
-----------------------------------------------
code.aspx.resx页面的代码：
<?xml version= "1.0 " encoding= "utf-8 " ?>
<root>
<xsd:schema id= "root " xmlns= " " xmlns:xsd= "http://www.w3.org/2001/XMLSchema " xmlns:msdata= "urn:schemas-microsoft-com:xml-msdata ">
<xsd:element name= "root " msdata:IsDataSet= "true ">
<xsd:complexType>
<xsd:choice maxOccurs= "unbounded ">
<xsd:element name= "data ">
<xsd:complexType>
<xsd:sequence>
<xsd:element name= "value " type= "xsd:string " minOccurs= "0 " msdata:Ordinal= "1 " />
<xsd:element name= "comment " type= "xsd:string " minOccurs= "0 " msdata:Ordinal= "2 " />
</xsd:sequence>
<xsd:attribute name= "name " type= "xsd:string " />
<xsd:attribute name= "type " type= "xsd:string " />
<xsd:attribute name= "mimetype " type= "xsd:string " />
</xsd:complexType>
</xsd:element>
<xsd:element name= "resheader ">
<xsd:complexType>
<xsd:sequence>
<xsd:element name= "value " type= "xsd:string " minOccurs= "0 " msdata:Ordinal= "1 " />
</xsd:sequence>
<xsd:attribute name= "name " type= "xsd:string " use= "required " />
</xsd:complexType>
</xsd:element>
</xsd:choice>
</xsd:complexType>
</xsd:element>
</xsd:schema>
<resheader name= "ResMimeType ">
<value> text/microsoft-resx </value>
</resheader>
<resheader name= "Version ">
<value> 1.0.0.0 </value>
</resheader>
<resheader name= "Reader ">
<value> System.Resources.ResXResourceReader, System.Windows.Forms, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 </value>
</resheader>
<resheader name= "Writer ">
<value> System.Resources.ResXResourceWriter, System.Windows.Forms, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 </value>
</resheader>
</root>
好了！~代码就是这些了！~如果你测试不成功的话联系我！~我给你原来的文件！~