Hi Harry,

We have several querystring variables available to add items directly to the Cart. Please see the KB article at the following link for more info: http://helpdesk.smith-consulting.com/...

We also have the following options:
SmithCart SDK - http://helpdesk.smith-consulting.com/...
Rest API Endpoints - http://helpdesk.smith-consulting.com/...

Hope this helps!

So I have been trying the advice in the posted links. I have to say it was all a bit confusing.

Hopefully this helps somebody else when on your help page:

http://helpdesk.smith-consulting.com/...

Under the "Add to Cart - Product" section..

2.  Navigate to the cart page to get the URL to the cart page.
There is no actual cart page because you are only asked to set up 2 pages initially? Anyway I'm guessing it's the page that shows when I click on add to cart from the Products page I created earlier. So it becomes this (www.mysite.com/Shop-Manager/ctl/Cart/mid/4711). There are many ways to navigate if you are an admin of a website so I understood this as navigating via the page management system as most users reading this will be doing?

3.  Add product id to the url as show below:
Single Product:  http://www.mydomain.com/Cart/Default.aspx?productid=1
Multiple Products:  http://www.mydomain.com/Cart/Default.aspx?productid=1,2,3

So looking at my previous URL this then becomes:
www.mysite.com/Shop-Manager/ctl/Cart/mid/4711?productid=1
or
www.mysite.com/Shop-Manager/ctl/Cart/mid/4711?productid=1,2,3

Anyway I hope this helps somebody.