Prevent entering a string as an integer in VB

Question

Ok, so I really have no idea how to do this, but how would I prevent a crash when it asks for an integer value and the user gives it a string?

Here's some example code;

private sub userInput()
    dim userInputNum As Integer
    userInputNum = InputBox("Enter a number.")
end sub

And if the user enters text, it just crashes. So I was wondering if anyone had a solution?

Thanks, I would appreciate it a lot.

score 3 · Accepted Answer · answered Nov 06 '15 at 12:00

3

Use Integer.TryParse

Dim userInputNum As Integer

Dim noInput = Console.ReadLine

If Integer.TryParse(noInput, userInputNum) Then
    Console.WriteLine("Integer accepted")
Else
    Console.WriteLine("Please don't enter non integer values")
End If

answered Nov 06 '15 at 12:00

MusicLovingIndianGirl

5,909
9
34
65

An [alternative](http://stackoverflow.com/questions/419027/integer-tryparse-a-better-way). – Eminem Nov 06 '15 at 12:38
Might want to strip comas (in US, etc.) so you can accept 1,000 etc. – rheitzman Nov 06 '15 at 22:05

Prevent entering a string as an integer in VB

1 Answers1