c# - How to display Details records of Selected Master Record on Entity Framework? -


i'm new entity framework , trying learn basics through simple examples.

these 2 tables of columns:

customers_base:

cb_refno (primary key) cb_name etc..

orders:

or_refno (primary key) or_m_refno (foreign key) contacts_base table etc..

i have inserted sample data both tables , want accomplish view orders of a customer on datagridview.

i have bindingnavigator, contacts_basebindingsource , ordersbindingsource on crud.

my code: 

contacts_basebindingsource.datasource = lobo.contacts_base.tolist();              bindingnavigator1.bindingsource = contacts_basebindingsource;

so when click next/previous buttons on bindingnavigator able view records on customers_base table. have ordersgridview display each order record each record on contacts_base?

thanks


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