UC知道ASP.NET验证码我做完了，如何在主页中验证登陆
来源：百度知道 编辑：UC知道 时间：2024/06/22 11:00:31
验证码后台代码如下
public partial class checkcode : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
CreateCheckCodeImage(GenerateCheckCode());
}
private string GenerateCheckCode()
{
int number;
char code;
string checkCode = String.Empty;
System.Random random = new Random();
for (int i = 0; i < 4; i++)
{
number = random.Next();
if (number % 2 == 0)
code = (char)('0' + (char)(number % 10));
else
code = (char)('A' + (char)(number % 26));
checkCode += code.ToString();
}
Response.Cookies.Add(new HttpCookie("CheckCode", checkCode));
return checkCode;
}
private void CreateCheckCodeImage(string checkCode)
public partial class checkcode : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
CreateCheckCodeImage(GenerateCheckCode());
}
private string GenerateCheckCode()
{
int number;
char code;
string checkCode = String.Empty;
System.Random random = new Random();
for (int i = 0; i < 4; i++)
{
number = random.Next();
if (number % 2 == 0)
code = (char)('0' + (char)(number % 10));
else
code = (char)('A' + (char)(number % 26));
checkCode += code.ToString();
}
Response.Cookies.Add(new HttpCookie("CheckCode", checkCode));
return checkCode;
}
private void CreateCheckCodeImage(string checkCode)
用cookie和session都可以,不过还是用session好点儿,因为有的电脑可能会限制cookie.
改成session,把下面这句
Response.Cookies.Add(new HttpCookie("CheckCode", checkCode));
替换成
Session.Add("CheckCode",checkCode);
然后在你的登录按钮中比较
if (Check.Text == Session["CheckCode"].ToString())
{
登录代码...
}
Response.Cookies.Add(new HttpCookie("CheckCode", checkCode));
这句已经把验证码写入到Cookies里面了
在验证的登录页面只需把该值取出，验证是否与你输入的相等即可
if（ Request.Cookies["CheckCode"].ToString()==TextBox1.Text）
{
//验证成功
}
我刚做完验证码，用Session判，
在后台的Page_Lode里写Session[checkCode]=checkCode；
前台判断处写
if (this.txtCode.Text.Equals(Session["checkCode"]))
{
.....
}
才做完的绝对没问题！