IsNumeric C# equivalent

[Stephan Bour]

IS there a C# equivalent to the VB IsNumeric function?

[AlexS]

Check Parse and TryParse methods for corresponding types, Int, Long etc.

HTH
Alex

"Stephan Bour" <sb***@niaid.nih.gov> wrote in message
news:BBCE9144.B64C%sb***@niaid.nih.gov...

IS there a C# equivalent to the VB IsNumeric function?

[Wim Hollebrandse]

Try the static IsNumber() method on the Char class.

E.g.:

char c = 'a';
if (Char.IsNumber(c))
{
//do whatever...
}

Hope that helps.

Cheers,
Wim Hollebrandse
http://www.wimdows.net
http://www.wimdows.com

---
Posted using Wimdows.net Newsgroups - http://www.wimdows.net/newsgroups/

[Stephan Bour]

Actually, IsNumeric does two things: converts a string and returns a boolean
true if the resulting expression is recognized as a number. Parse only
converts a string representation of a number to double. I need the boolean
return to validate a text box entry that can't be easily checked with a
validator.
Stephan.

in article eu**************@tk2msftngp13.phx.gbl, AlexS at
sa***********@SPAMsympaticoPLEASE.ca wrote on 11/5/03 14:39:

Check Parse and TryParse methods for corresponding types, Int, Long etc.

HTH
Alex

"Stephan Bour" <sb***@niaid.nih.gov> wrote in message
news:BBCE9144.B64C%sb***@niaid.nih.gov...

IS there a C# equivalent to the VB IsNumeric function?

[Stephan Bour]

That's the idea. However, I need to do that on a string. I guess I could use
the String.ToCharArray() method first or use a loop.
Thanks,
Stephan.

in article ue**************@TK2MSFTNGP11.phx.gbl, Wim Hollebrandse at
[e-mail] wrote on 11/5/03 12:42:

Try the static IsNumber() method on the Char class.
E.g.:

char c = 'a';
if (Char.IsNumber(c))
{
//do whatever...
}

Hope that helps.

Cheers,
Wim Hollebrandse
http://www.wimdows.net
http://www.wimdows.com

---
Posted using Wimdows.net Newsgroups - http://www.wimdows.net/newsgroups/

[AlexS]

So, check TryParse

MSDN:
The TryParse method is like the Parse method, except this method does not
throw an exception if the conversion fails. If the conversion succeeds, the
return value is true and the result parameter is set to the outcome of the
conversion. If the conversion fails, the return value is false and the
result parameter is set to zero.

HTH

Alex

"Stephan Bour" <sb***@niaid.nih.gov> wrote in message
news:BBCEA49C.B6D7%sb***@niaid.nih.gov...

Actually, IsNumeric does two things: converts a string and returns a boolean true if the resulting expression is recognized as a number. Parse only
converts a string representation of a number to double. I need the boolean
return to validate a text box entry that can't be easily checked with a
validator.
Stephan.

in article eu**************@tk2msftngp13.phx.gbl, AlexS at
sa***********@SPAMsympaticoPLEASE.ca wrote on 11/5/03 14:39:

Check Parse and TryParse methods for corresponding types, Int, Long etc.

HTH
Alex

"Stephan Bour" <sb***@niaid.nih.gov> wrote in message
news:BBCE9144.B64C%sb***@niaid.nih.gov...

IS there a C# equivalent to the VB IsNumeric function?

[mikeb]

Stephan Bour wrote:

IS there a C# equivalent to the VB IsNumeric function?

Follow this link:

http://groups.google.com/groups?selm...%40tkmsftngp09

--
mikeb

[Stephan Bour]

I apologize, I read TryParse too fast. You're right, it does what I need.
Thank you,
Stephan.

in article #I**************@TK2MSFTNGP10.phx.gbl, AlexS at
sa***********@SPAMsympaticoPLEASE.ca wrote on 11/5/03 16:18:

So, check TryParse

MSDN:
The TryParse method is like the Parse method, except this method does not
throw an exception if the conversion fails. If the conversion succeeds, the
return value is true and the result parameter is set to the outcome of the
conversion. If the conversion fails, the return value is false and the
result parameter is set to zero.

HTH

Alex

"Stephan Bour" <sb***@niaid.nih.gov> wrote in message
news:BBCEA49C.B6D7%sb***@niaid.nih.gov...

Actually, IsNumeric does two things: converts a string and returns a

boolean

true if the resulting expression is recognized as a number. Parse only
converts a string representation of a number to double. I need the boolean
return to validate a text box entry that can't be easily checked with a
validator.
Stephan.

in article eu**************@tk2msftngp13.phx.gbl, AlexS at
sa***********@SPAMsympaticoPLEASE.ca wrote on 11/5/03 14:39:

Check Parse and TryParse methods for corresponding types, Int, Long etc.

HTH
Alex

"Stephan Bour" <sb***@niaid.nih.gov> wrote in message
news:BBCE9144.B64C%sb***@niaid.nih.gov...
IS there a C# equivalent to the VB IsNumeric function?