I use VC to read data from the database, get a m * n matrix, the cycle of m * n, via a SetItemData VBA function, data in the database to fill in the form, but when form a lot of data, the efficiency is too low, how to improve the WORD write speed in the table, I think of a way, that is copy and paste, the efficiency is very high, but how to convert m * n blocks of data into VBA to identify blocks of data, and then paste to form,