Visual Basic

Hoochiemama · 12-03-2005 07:58PM #1

Hey,

i have a programme that takes in details from the user and stores them in a data base. what i want to do is when i read in the data entered in the text box, i want to validate it. for example, in the FirstName textbox, i want to make sure numbers cannot be entered. Any help is much appreciated!!

Dee

Hoochiemama · 12-03-2005 08:56PM

also, would anyone know a way to validate the number of characters ina textbox,

e.g. - student ID text box must be 8 digits long

optiplexgx270 · 12-03-2005 09:25PM

in the function fot the button click or whatever do an if textbox.length <8 display a label and return

Hoochiemama · 12-03-2005 10:39PM

.length isn't recognised by VB

Seth Brundle · 12-03-2005 10:41PM

within your checking procedure...

'check that it is 8 chars long
If Len(txtFirstname.Text) <> 8 Then MsgBox ("must have 8 chars!")

'check no numbers
For i = 0 To 9
   If InStr(txtFirstname.Text, i) Then MsgBox ("No numbers allowed!")
Next

optiplexgx270 · 12-03-2005 10:44PM

my visual studio 2003 wouldnt open and i wasnt going to hand you the code but well there it is above

Hoochiemama · 12-03-2005 11:12PM

thanks a million!! my hair thanks you cos i was about to start pulling it out!!

amen · 14-03-2005 11:13AM

you should really look at the keypress function this allows you to check the value in your input box as it is entered and determine if its a char/number etc and stop the entry if it is not of the required format.
While kbannons is functionaly correct its not the best or fastest way to process

As for the 8 characters a text box in vb has a max lenght property
you can set this to 8

you could also check the 8 character in the keypress function

optiplexgx270 · 14-03-2005 11:56AM

i did think there was a max length prop but as i said my visual studio 2003 wouldnt open so i couldnt be sure

Visual Basic

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