/// <summary>
/// Refreshes a captcha.
/// </summary>
/// <returns>
/// An instance of <see cref="ActionResult" />.
/// </returns>
public virtual ActionResult Refresh()
{
var parameterContainer = new RequestParameterContainer(Request);
if (Request.IsAjaxRequest())
{
IUpdateInfoModel updateInfoModel =
CaptchaUtils.CaptchaManagerFactory(parameterContainer).Update(parameterContainer);
return(CaptchaUtils.BuilderProviderFactory(parameterContainer).RefreshCaptcha(updateInfoModel));
}
return(Redirect(Request.UrlReferrer.AbsolutePath));
}
/// <summary>
/// Generates a new captcha image.
/// </summary>
public virtual void Generate()
{
var parameterContainer = new RequestParameterContainer(Request);
try
{
if (Request.UrlReferrer.AbsolutePath == Request.Url.AbsolutePath)
{
throw new InvalidOperationException();
}
IDrawingModel drawingModel =
CaptchaUtils.CaptchaManagerFactory(parameterContainer).GetDrawingModel(parameterContainer);
CaptchaUtils.BuilderProviderFactory(parameterContainer).WriteCaptchaImage(Response, drawingModel);
}
catch (Exception)
{
CaptchaUtils.BuilderProviderFactory(parameterContainer).WriteErrorImage(Response);
}
}
/// <summary>
/// Gets the <see cref="ICaptchaBuilderProvider"/> using the specified <see cref="ControllerBase"/>.
/// </summary>
/// <param name="controllerBase">The specified <see cref="ControllerBase"/>.</param>
/// <returns>An instance of <see cref="ICaptchaBuilderProvider"/>.</returns>
public static ICaptchaBuilderProvider GetCaptchaBuilderProvider(this ControllerBase controllerBase)
{
return(CaptchaUtils.BuilderProviderFactory(
new RequestParameterContainer(controllerBase.ControllerContext.HttpContext.Request)));
}