sales order system project

Hello dears

I need to create a dynamic solution for (sales order system) to manage the sales orders from the moment of receiving the request and till it’s delivered to the customer, I have another software to manage the stock and finance but the sales order system has to be very customized to fit with everyday operations.

I made an overview of what I need through a c# forms, just to represent what I expect to receive, please check it

of course, we will define the final shape of the app before starting through a long discussion.

i need to develop the app and need it to be available through web or windows app

I prefer SQL server and C# for development

Thanks