@Html.DevExpress().GetStyleSheets(
           new StyleSheet { ExtensionSuite = ExtensionSuite.NavigationAndLayout },
           new StyleSheet { ExtensionSuite = ExtensionSuite.Editors }
       )
@Html.DevExpress().GetScripts(
    new Script { ExtensionSuite = ExtensionSuite.NavigationAndLayout },
    new Script { ExtensionSuite = ExtensionSuite.Editors }
)

@Html.DevExpress().Captcha(settings =>
{
    settings.Name = "Captcha1";
    settings.CallbackRouteValues = new { Controller = "Home", Action = "Captcha1Partial" };

    settings.CodeLength = 5;
    settings.TextBox.Position = DevExpress.Web.Captcha.ControlPosition.Top;
    settings.ValidationSettings.RequiredField.IsRequired = true;
}).GetHtml()