what's a good way to show temporary details in a screen, that later is gonna be used for updating a masters/details tables

Question

I have a master/detail tables and I need to show in a screen a set of detail data which has exactly the same structure than the details table, so later I can save the temporary details data to the real physical details table. What's a good way to do this in .NET without LinQ? (since Im not familiar with LinQtoSql)