We don't have any documentation that I can point you to, but I can give you a quick overview. You'll want to create your custom workflow step class in either /App_Code or a new assembly (i.e. don't add it to the BVC Core assembly). Once your class is created you should add it to the TaskLoader.Custom.vb class in /App_Code. The regular TaskLoader.vb class is used for all of our workflow steps in the Core; TaskLoader.Custom.vb is intended for custom code and plugins.


Here's a link to documentation on creating a custom payment gateway integration:

http://www.bvcommerce.co...ment-Gateway-Integration

As for custom database fields, your best bet is to use the CustomProperties property which is a collection of name/value pairs stored as XML in the database. This effectively allows you to create any number of custom fields without having to modify the database and stored procedures. If that won't work you may want to consider creating an extension table to contain your custom properties. You certainly can add a field to the existing tables, but it will require you to modify all of the corresponding stored procedures and class in the Core assembly.

Can we add New Payment method plugin like you have Paypal Method without touching core code.There can be many other checkout options like google checkout.