Query.aspx front desk to query whether the anti-counterfeiting code exists (the anti-counterfeiting code can only be queried once, and it will be invalid after the second query) Number such as: BL7N-GUM2-25CW-8IRW verification code and then click query to determine the authenticity of the product. ManagerNewCode.aspx The number of anti-counterfeiting codes that can be generated by generating anti-counterfeiting codes: (the user inputs the number of anti-counterfeiting codes to be generated) Generate an anti-counterfeiting code such as: BL7N-GUM2-25CW-8IRW, you can select and delete it, and then write the generated verification code into the database system. ManagerQuery.aspx Anti-counterfeiting code query queries all valid anti-counterfeiting codes (can be selected and deleted). The valid anti-counterfeiting codes can be exported to EXCEL files. Before running, please modify the account password of the SQL2000 database in ConnectionSql.cs Web.Config.