I have to create two forms. In the mainFrm the user enters all his personal data (name, phone, email, address), and a label to display amount due. One of the buttons takes the user to a second form. In the secondFrm , I have two CheckBoxes, one is for the registration fee, and I have a list with the workshop's name and fee.
The secondFrm has to be displayed in a modal form. I have done all of the above and I got no errors. However, I do not know how to do the Input Validation. The user cannot register for the optional workshop without selecting the conference registration.
I know it has to be and IF statement with the And logical operator.
If IsNumeric(Me.chkConfReg.Text) And (Me.lstWorkshops)???
Also, does the input validation has to go in the Public class?