(JS刷新验证码5.docxVIP

ASP.NET中的无刷新验证码的开发(完整代...本站整理 互联网 2010-11-15 点击： 933 我要评论 复制代码 代码如下:%@ Page Language=C# AutoEventWireup=true CodeFile=Login.aspx.cs Inherits=Login % !DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN /TR/xhtml1/DTD/xhtml1-transitional.dtd html xmlns=/1999/xhtml head id=Head1 runat=server title无标题页/title script type=text/javascript function DoFresh() { document.getElementById(Image1).src = VerifyCode.aspx; } /script /head body form id=form1 runat=server div table tr td 验证码：asp:TextBox ID=txtValidateCode runat=server/asp:TextBox /td td asp:Image ID=Image1 runat=server / a href=javascript:DoFresh();看不清?/a /td /tr tr td align=center colspan=2 br / asp:Literal ID=litErrorMsg runat=server/asp:Literal asp:Button ID=btnSubmit runat=server Text=确定 / /td /tr /table /div /form /body /html using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class Login : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { Image1.ImageUrl = VerifyCode.aspx; } } protected void btnSubmit_Click(object sender, EventArgs e) { if (Session[ValidateCode] != null) { string outputValidateCode = Session[ValidateCode] as string; string inputValidateCode = txtValidateCode.Text.Trim(); if (string.Compare(outputValidateCode, inputValidateCode, true) != 0) { //Response.Write(scriptjavascript:alert(输入的验证码错误！);/script); litErrorMsg.Text = 输入的验证码错误！; } else { //Response.Write(scriptjavascript:alert(输入的验证码正确！);/script); litErrorMsg.Text = 输入的验证码正确！; } } } #region 调用下面的方法实现客户端保存Cookie验证模式 private void ValidateMethod() { if (Request.Cookies[CheckCode] == null) { litErrorMsg.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。; litErrorMsg.Visible = true; return; } if (String.Compare(Request.Cookies[CheckCode].Value, TextBox1.Text.ToString().Trim(), true) != 0) { litErrorMsg.Text = font color=red对不起，验证码错误！/font; litErrorMsg.Visible = true; return; } else