im trying to write a program to calculate BMI for practice. I have it working for the most part but im having trouble with 1 thing. I want to say if its any letter or not a number then display an error message. Here is the code that I need help with. How do I make it work?
ElseIf (ComboBox2.Text) = ???? Then
MsgBox("ERROR2: Please Select Your Height In The Inches Box.")
theres more than that but this is the only part giving me trouble