Hi Nikifor,I am not sure if you received my last post and decided to start another thread.I finally had time after some health problems to review the application sample you kindly provided. However, my question was a bit more complex.In the Northwind database we have the Orders, OrderDetails Products and categories tables. The OrderDetails table work as a mapping table even though it has more fields like UnitPrice, Quantity and Discount. So we have a many to many relationship Orders-OrderDetail-Products like this:
Orders---------> OrderDetails <--------Products<--------Categories.
1 - Can we use the Infragistic WebHierarchicalDataGrid and WebHierarchicalDataSource with the Entity Framework 4.0 so that we could create a grid and display all the related entities?
2 - Could we use CRUD operations on the grid? Would the WebHierarchicalDataGrid and WebHierarchicalDataSource know how to send the updates, insertions, deletes and using filters with the entity framework?
Example: The grid would display the following:
OrderID, OrderDate, Freight, ShipName, ShipCity (from Orders)UnitPrice, Quantity, Discount (from OrderDetails) ProductID, ProductName, CategoryName, Description (from Products and Categories)
3 - If I updated the CategoryName and save, will it be saved to the right Category table?
4 - What about to create a new record using all tables? what is the best way?
This is the kind of tutorial I think you should be creating to help people like me that use the Infragistic controls.
Could you please provide a sample code for the scenario described above?
Could someone please reply?
Just for reference, and to be of use to all forum views, this topic has already been discussed in detail in the following forum thread http://www.infragistics.com/community/forums/t/78185.aspx.
Thank you for posting in the community!