Visual Basic qustion (1 Viewer)

[Gavvvvvin]

Okay so in my prgram the user has to enter a number which is to be used in a calculation. How do I make the program check whether or not a number has been entered instead of say text?

 

[Gavvvvvin]

2005

 

[sasquatch]

Okay so in my prgram the user has to enter a number which is to be used in a calculation. How do I make the program check whether or not a number has been entered instead of say text?

Simple. Use the inbuilt function "IsNumeric"

e.g.

If IsNumeric(Text1) = True Then
Msgbox Text1 + 1
Else If
Msgbox "Please enter a number."
End If

 

[Gavvvvvin]

Grrr my program still crashes when the user doesnt enter a number. Am I supposed to have my user entered variable as a string at first, check it, then convert it to a double after?

 

[ianc]

yes

 

[gman03]

if you want you cna use error handlers

I would do that in assembly. Certainly not in VB!

 

[redslert]

omg goto statement
that's the root of all evil

 

[Affinity]

LOL

How about COMEFROM statements

 

[J0n]

omg goto statement
that's the root of all evil

I thought it was premature optimization?