First of all let me say I not using the most currently release version, but I using the most current previous as you can hopefully see in my example that has allowed me to use EntityDataSource. I searched high and low here, but was not able to see example using
EntityDataSource for Gridview using Custom View or Procedure? I created my stored procedure _Orders_SelectWithNull and included in codesmith. This is all working great and can see available in my intellisense in my code behind:
DataRepository.OrdersProvider.SelectWithNull(int opt1, int opt2, int op3)
I verified everything working with just using OrdersProvider, How do I reference the custom method I just added on the OrdersProvider and also send it the storeprocedure/method parameters it's expecting
How do you reference custom provider entity? 
<data:EntityDataSource ID="OrdersDataSource" runat="server"
ProviderName="OrdersProvider"
EntityTypeName="exampleDB.BLL.OrdersProvider, exampleDB.BLL"
SelectMethod="GetPaged"
EnablePaging="True"
EnableSorting="True">
Once referenced? use? <data:DataParameter
data:DataParameter
<data:DataParameter
data:DataParameter <data:DataParameter
data:DataParameter <data:DataParameter
data:DataParameter <data:DataParameter