Auction One .Net Interview Questions

C#, ASP.NET, SQL Server 

1. What are web-parts?
2. Differentiate between web-parts and custom controls.
3. What is an interface?
4. Differentiate between a structure and a class.
5. What are delegates?
6. How you will do edit, update, delete in Gridview control when the data inserted in it is coming from a Join operation?
7. How is ADO.NET different from ADO?
8. What are the advantages of ADO.NET?
9. Differentiate between unique key and primary key.
10. What is a cross-join?