Add Custom Payment Form to Checkout Process

Not only do you need to create the gateway, but you need to create the form that goes along with it. The form path is defined in the payment gateway. What I'm guessing is you have an in correct path, have not created the form OR the form is throwing an error and not loading.

I created the correspondig form and added the files (.ascx and ascx.cs) in the PaymentGateways Folder. The Form contains only a label with text..

How or where can I check If my form is throwing errors?

What version are you running on? You can check the Kentico event log for errors.

If running v8 or newer, you need to specify the path in your custom payment provider code and not just place your form code in a folder.

Iam running Version 9, I specified the path in my custom Provider:

public override string GetPaymentDataFormPath()
{
  return "~/CMSModules/Ecommerce/Controls/PaymentGateways/DummyPaymentForm.ascx";
}

And there I placed my form files! Have I used the proper method? I found a other method to ovverride: public override string GetPaymentDataFormPath()

Do I have to add the form to the Order Completed Page?