验证码页面Action：
public ActionResult VerifyCode()
{
string code;
Bitmap bmp = VerifyCodeHelper.CreateVerifyCodeBmp(out code);
Bitmap newbmp = new Bitmap(bmp, 108, 36);
HttpContext.Session["VerifyCode"] = code;
Response.Clear();
Response.ContentType = "image/bmp";
newbmp.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Bmp);
return View();
}
说明：前台页面为空的cshtml页面，验证码的值放在Session中。
使用验证码的页面：
显示验证码的img：
<img id="verifyCode" src="" style="margin: 0px; padding: 0px; line-height: 25.2px; width: 660px; overflow: hidden; clear: both;">
$(function () {
//刷新验证码
$("#refreshVerifyCode").click(function () {
refreshVerifyCode(); //刷新验证码
});
$("#verifyCode").click(function () {
refreshVerifyCode(); //刷新验证码
});
refreshVerifyCode();
});
刷新验证码：
//刷新验证码
function refreshVerifyCode() {
$("#verifyCode").attr("src", "VerifyCode?t=" + new Date().valueOf());
}
判断用户输入的文本是否与验证码相同的Action：
public ActionResult CheckVCode(string vcode)
{
if (HttpContext.Session["VerifyCode"].ToString().ToLower() == vcode.ToLower())
{
Dictionary<string, object> dic = new Dictionary<string, object>();
dic["ok"] = true;
return Content(JsonConvert.SerializeObject(dic));
}
else
{
Dictionary<string, object> dic = new Dictionary<string, object>();
dic["ok"] = false;
return Content(JsonConvert.SerializeObject(dic));
}
}
以上就是本文的全部内容，希望对大家学习C#生成验证码的方法有所帮助。
