/// <summary>
/// Generates the form fields' HTML for spam prevention. Use inside of an ASP.NET MVC form.
/// </summary>
/// <param name="htmlHelper">The view's HTML helper.</param>
/// <param name="fallbackMessage">An optional message to display above the CAPTCHA when it is displayed as a fallback.</param>
/// <returns>The spam prevention form fields' HTML</returns>
public static IHtmlString SpamPreventionFields(
this HtmlHelper htmlHelper,
string fallbackMessage = null)
{
ICaptchaGenerator captchaGenerator = null;
if (DependencyResolver.Current != null)
captchaGenerator = DependencyResolver.Current.GetService<ICaptchaGenerator>();
if (captchaGenerator == null)
captchaGenerator = new ReCaptchaGenerator();
var useCaptcha = htmlHelper.ViewData.ModelState.ContainsKey(Const.ModelStateKey);
if (useCaptcha)
return captchaGenerator.Generate(htmlHelper, fallbackMessage);
return htmlHelper.Hidden(Const.NoCaptchaChallengeField, Guid.NewGuid().ToString("N"));
}
/// <summary>
/// Generates the form fields' HTML for spam prevention. Use inside of an ASP.NET MVC form.
/// </summary>
/// <param name="htmlHelper">The view's HTML helper.</param>
/// <param name="fallbackMessage">An optional message to display above the CAPTCHA when it is displayed as a fallback.</param>
/// <returns>The spam prevention form fields' HTML</returns>
public static IHtmlString SpamPreventionFields(
this HtmlHelper htmlHelper,
string fallbackMessage = null)
{
ICaptchaGenerator captchaGenerator = null;
if (DependencyResolver.Current != null)
{
captchaGenerator = DependencyResolver.Current.GetService <ICaptchaGenerator>();
}
if (captchaGenerator == null)
{
captchaGenerator = new ReCaptchaGenerator();
}
var useCaptcha = htmlHelper.ViewData.ModelState.ContainsKey(Const.ModelStateKey);
if (useCaptcha)
{
return(captchaGenerator.Generate(htmlHelper, fallbackMessage));
}
//Session hacks
var session = htmlHelper.ViewContext.HttpContext.Session;
var guidKey = "_" + Const.NoCaptchaChallengeField;
string guid;
if (session[guidKey] != null)
{
guid = (string)session[guidKey];
}
else
{
guid = Guid.NewGuid().ToString("N");
}
//set guid into session for using again later
session[guidKey] = guid;
//--
return(htmlHelper.Hidden(Const.NoCaptchaChallengeField, guid));
}
/// <summary>
/// Generates the form fields' HTML for spam prevention. Use inside of an ASP.NET MVC form.
/// </summary>
/// <param name="htmlHelper">The view's HTML helper.</param>
/// <param name="fallbackMessage">An optional message to display above the CAPTCHA when it is displayed as a fallback.</param>
/// <returns>The spam prevention form fields' HTML</returns>
public static IHtmlString SpamPreventionFields(
this HtmlHelper htmlHelper,
string fallbackMessage = null)
{
ICaptchaGenerator captchaGenerator = null;
if (DependencyResolver.Current != null)
{
captchaGenerator = DependencyResolver.Current.GetService <ICaptchaGenerator>();
}
if (captchaGenerator == null)
{
captchaGenerator = new ReCaptchaGenerator();
}
var useCaptcha = htmlHelper.ViewData.ModelState.ContainsKey(Const.ModelStateKey);
if (useCaptcha)
{
return(captchaGenerator.Generate(htmlHelper, fallbackMessage));
}
return(htmlHelper.Hidden(Const.NoCaptchaChallengeField, Guid.NewGuid().ToString("N")));
}
