well the program converts temperature from one unit to another. how can i restrict them to just enter numerical values and not any characters? i know the buffer system in c++ just sucks but there should be some way don't u think so?
For Each ctrl As Control In Me.Controls("pnlMainPanel").Controls
If ctrl.GetType Is GetType(System.Windows.Forms.Panel) Then
For Each subCtrl As Control In ctrl.Controls
If subCtrl.GetType Is GetType(System.Windows.Forms.TextBox) Then
If subCtrl.GetType Is ...