... Finite Difference model 105,111–14inheritance 35– 56 initialised variable 26 insert method 64 InsertCommand 68 , 72interfaces 46 53internal access modifier 27InvokeMember 52Iprice 47–8, 57IsBackground ... 68 –9InsertCommand 68 , 72sqlCommand 60 sqlConnection 60 UpdateCommand 68 –9, 72database handler 64 –7DataColumns 68 , 69 –70DataGrid 90, 91–3, 98DataRelations 59, 68 DataRows 67 –8DataSet 59, 60 , 64 , 67 –8, ... 94AcceptChanges 69 DataColumns 68 , 69 –70DataRows 67 –8DataTables 68 GetChanges 69 HasErrors 69 RejectChanges 69 –70Rows 67 –8DataTables 68 delete method 17–18, 64 DeleteCommand 68 , 72deployment...