验证码接收
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using CZBK.ItcastProject.Common; namespace CZBK.ItcastProject.WebApp._2015_5_29
{
/// <summary>
/// ValidateImageCode 的摘要说明
/// </summary>
public class ValidateImageCode : IHttpHandler
{ public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
ValidateCode validatecode = new ValidateCode();
string code= validatecode.CreateValidateCode();
validatecode.CreateValidateGraphic(code, context);
} public bool IsReusable
{
get
{
return false;
}
}
}
}
登录页面（实现验证码点击替换）
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script type="text/javascript">
window.onload = function () {
var validateCode = document.getElementById("validateCode");
validateCode.onclick = function () {
document.getElementById("imgCode").src = "ValidateImageCode.ashx?d=" + new Date().getMilliseconds();
}
}
</script>
</head>
<body>
<form method="post" action="UserLogin.ashx">
用户名:<input type="text" name="txtName" /><br />
密码:<input type="password" name="txtPwd" /><br />
验证码:<input type="text" name="txtCode" /><img src="ValidateImageCode.ashx" id="imgCode" />
<a href="javascript:void(0)" id="validateCode">看不清</a><br />
<input type="submit" value="登录" />
</form>
</body>
</html>