Export binary data to datatable

hi,

i want to export binary data to datatable, can you help me ?

the binary data is saved here : getPrezzi.ResultSet.Tables[0].Rows[j].ItemArray[20]

i do this : byte data = (byte) getPrezzi.ResultSet.Tables[0].Rows[j].ItemArray[20];

now, i’want to insert data to datatable in column (byte type)

what should i to do ?