Cloning data on Entity Framework

I am creating software where user can create new product based on older product.

Now I need to make copying / cloning operations with Entity Framework. First I started writing like this:

foreach(sourcedata1 in table1)
{
   ... create new table
   ... copy data
   ... create Guid
   ... add
   foreach(sourcedata2 in table2)
   {
       ... create new table
       ... copy data
       ... create Guid
       ... add       

       ... and so on
   }
}

Problem is that this not a nice way to do it. Is there any easy way clone information (except Guid that needs to be generated for new rows) or should I manually copy everything?

Other solution

You could also use EmitMapper or AutoMapper to do copying of the properties.