Try Dapper for a simple .NET ORM. We created and use it for Stack Overflow. https://code.google.com/p/dapper-dot-net/
Here's the original post describing how we made it: http://samsaffron.com/archive/2011/03/30/How+I+learned+to+st...
Here's the original post describing how we made it: http://samsaffron.com/archive/2011/03/30/How+I+learned+to+st...
Also known as "mapping"; the literal purpose of an ORM. :)
Other big tools/frameworks include APIs for query generation, unit of work, caching, etc., which are not always necessary or desired.
ORM's compensate for the impedance mismatch between objects and tables. They do a lot more than mapping.