WPF datagrid copy to another datagrid

HI All

I'm trying to simple copy data from one datagrid to another using c# in WPF.  Datagrid data are loading from sql.

What i'm trying to do is to make bill of the material of some parts and when i choose the parts and press add, it will add all parts material (copy) to another datagrid.

Could anybody help me. Please.

Thank you.