Hi. I am new to Umbraco so bare with me.

Using v6.1.x and also using MVC.

So I have a controller that derives from SurfaceController.

I have a partial view.

When the user hits submit, it posts to the controller method. This method will do some validation on the model and other business logic.

If it fails, I want to return the model back to the partial view showing the error message. I use in this case ModelState.AddModelError to add the error to the model state.

Now, I tried this but what happens is that the action seems to be called again! And I don't see the error at all on the partialview area.

Any ideas why? I don't understand why when doing:

return PartialViewResult(model);

invokes the action again?

here is the code I am using...

[HttpPost]

public PartialViewResult Login(UserLogin ReceivedModel)
        {
            if (ModelState.IsValid == false)
            {
                return PartialView(ReceivedModel);
            }

            try
            {
                
                var returnedData = someClass.DoSomething(ReceivedModel);

                if (!returnedData.Valid)

                {

                   ModelState.AddModelError("Problem....");

                   return PartialView(ReceivedModel);

                }
            }
            catch (Exception ex)
            {
                ModelState.AddModelError(string.Empty, ex);
                return PartialView(ReceivedModel);
            }
}

So when I do return PartialView(ReceivedModel), it invokes this same action again then displays the page but does not show the error.