VC carries out crystal statement's logarithms to bind to settle according to the dynamic state of source with history data to show a search
Jie Luo · Electronic Design Engineering · 2012
For the sake of to the examination for temperature data to carry on solid of on-line steel plate and saving,with the VC++6.0 as a terrace,the establishment supervision orders with the string of the of PC machine correspondence,the usage ADO technique writes in the data into Access database.When the PC carries to show,the adoption SQL language sentence and crystal statement carry on a search from the formula language sentence taking and carry on a saving data back to put with the data diagram object form.But the VC terrace bottom of tradition to the usage of crystal statement mostly is bind to settle single data source,this says being not viable to the application of many databases.So,this text set up work system according to the on-line steel plate temperature and elaborated how to carry out to the dynamic state of crystal statement and bind predestination according to the source and the history data's showing search under the VC.