Hello
I'm using an Excel workbook as database, my code in C# WinForms and already writes on each Excel column and filters the Text from letters, etc.
But I have one problem, when I double click N times "add" button, it writes N times the same information.
I need my program to be able to make someking of filtering before adding, I mean, if I'm trying to add the same information twice the program would make the information visible in my textboxes, how would I be able to do that? I've tried many things on the net, but none of them work.
Please help me. :)