Hi, could anyone help me I don't know what happened? It's really strange. At add page, when I inserted a record, sometimes the column, trno, missing it's value. It rarely happens, but make me confuse. thank you
It's difficult to tell you what's happening without seeing actual files. Please publish your project on Demo Account and send to support@xlinesoft.com a URL to your pages along with instructions on reproducing this error.
I'll find what's wrong with your project inspecting it at Demo account site.