To add a new row from dg2 to dg1

I am new in .NET compact framework, i need ur help:

I have two forms and each form having a data grid i.e. dg1 and dg2. I wants to add a new row in dg1 when double click of any row of dg2 and remove that row from dg2 which is added to dg1 only.

Please help me.........

Thankks in Advance..........