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Regular expression

  Asked By: Juana    Date: Jan 08    Category: Asp.net    Views: 676
  

i'm trying to make a regular expression for an input-field of a winform.
I wanna force the user to enter strings, so not started with a number...
But my regex doesn't work...
Somebody sees what i'm doing wrong?



dim myRegEx As regex
myRegEx = New Regex("^(\d)*(\w)")

Dim match As Match = myRegEx.Match(gegevens)
If (match.Success) Then
...
doaction
...
Else
errormessage
End If

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3 Answers Found

 
Answer #1    Answered By: Becky Baker     Answered On: Jan 08

give this regex a shot:

myRegEx = New Regex("^[^\d*](\w)*")

you need to put the [^\d*] in there to tell it that you don't want digits to
start out with. it'll let digits pass through after the first nondigit
char.

 
Answer #2    Answered By: Stacie Martin     Answered On: Jan 08

I think that regex is a bit off. It says that the string can't start
with a digit OR a *. If the string can start with ANYTHING but a digit
you can use:

[^0-9].*

If it MUST start with an alphabetic character, you can use:

[a-zA-Z].*

Check out the following link for more on regular  expressions:
www.4guysfromrolla.com/.../...larExpressions.shtml

 
Answer #3    Answered By: Adali Fischer     Answered On: Jan 08

I have been searching a lot for a regular  expression that validates a
user's input.
The input can be anything but not just numbers alone.

There can be numbers and any special characters in the input along with
other alphabets but I should not allow the user  to enter  just numbers or
special characters without any alphabets.

Can anyone help me with this??

 
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