Developer forum

Hi Martin

That would be too late in the process as the submit has already been added to DB.

You can use Notifications.Frontend.OnBeforeContent:

using Dynamicweb.Extensibility.Notifications;
using Dynamicweb.Notifications;
using System;

namespace Dynamicweb.Examples.Notifications
{
    [Subscribe(Dynamicweb.Forms.Notifications.Frontend.OnBeforeContent)]
    public class FormSubscriber : NotificationSubscriber
    {
        public override void OnNotify(string notification, NotificationArgs args)
        {
            if (args == null)
                return;

            var loadedArgs = (Dynamicweb.Forms.Notifications.Frontend.OnBeforeContentArgs)args;

            if (loadedArgs != null && loadedArgs.ContentModule.RequestContext("cmd").Equals("save", StringComparison.OrdinalIgnoreCase))
            {
                bool submitNotAllowed = false;
                //Logic to test what is being submitted
                //submitNotAllowed=true
                if (submitNotAllowed)
                {
                    loadedArgs.StopExecution = true;
                    loadedArgs.Output = "<h1>Not allowed</h1>";
                }
            }
        }
    }
}

Thanks! Looks like it is working, but not completly as expected.

This line replace the form with "Not allowed". Is it possible to just add the text above the form. So that the user still can make changes to the form without reloading the whole page?