Validating a text box

[JJ297]

How do I validate a text box field which only requires a number in it?

[Rad [Visual C# MVP]]

On Thu, 01 Nov 2007 09:09:55 -0700, JJ297 <nc***@yahoo.comwrote:

>How do I validate a text box field which only requires a number in it?

Couple of options
1) Use a regular expression to validate the text \d+
2) Don't use a textbox at all -- use something like a numeric up down

--
http://bytes.thinkersroom.com

[=?Utf-8?B?TWlsb3N6IFNrYWxlY2tpIFtNQ0FEXQ==?=]

Hi there,

Use RangeValidator with Type set to "Integer". You can also specify min and
max values as well by changing MinimumValue & MaximumValue properties
respectively. Note validation succeeds if the input control is empty. Apply
RequiredFieldValidator control to make the input control a mandatory field.

Hope this helps
--
Milosz
"JJ297" wrote:

How do I validate a text box field which only requires a number in it?

[Mansi Shah]

Hi,

The other option is to convert all the characters of textbox to ascii
and check whether they are numbers or not.
Here is an example,
string tempString = Textbox1.Text.ToString().Trim();
if ((tempString != "") && (tempString != null))
{
for (int i = 0; i < tempString.ToString().Length; i++)
{
int iAsciiCode = Convert.ToInt32(((int)tempString[i]).ToString());
if (iAsciiCode != 46)
{
if (!((iAsciiCode 47) && (iAsciiCode < 58)))
{
//some message that it should be number
return;
}
}
}
}
Regards,
Mansi Shah.

*** Sent via Developersdex http://www.developersdex.com ***

[JJ297]

On Nov 1, 7:15 pm, Milosz Skalecki [MCAD] <[e-mail]>
wrote:

Hi there,

Use RangeValidator with Type set to "Integer". You can also specify min and
max values as well by changing MinimumValue & MaximumValue properties
respectively. Note validation succeeds if the input control is empty. Apply
RequiredFieldValidator control to make the input control a mandatory field.

Hope this helps
--
Milosz

"JJ297" wrote:

How do I validate a text box field which only requires a number in it?- Hide quoted text -

- Show quoted text -

Thanks Milosz

I got it to work but when I enter in number all of my validation comes
up on the page how can I just get the error to say enter a number to
only come up and not the other messages?

[JJ297]

On Nov 2, 11:55 am, JJ297 <[e-mail]:

On Nov 1, 7:15 pm, Milosz Skalecki [MCAD] <[e-mail]>
wrote:

Hi there,

Use RangeValidator with Type set to "Integer". You can also specify min and
max values as well by changing MinimumValue & MaximumValue properties
respectively. Note validation succeeds if the input control is empty. Apply
RequiredFieldValidator control to make the input control a mandatory field.

Hope this helps
--
Milosz

"JJ297" wrote:

How do I validate a text box field which only requires a number in it?- Hide quoted text -

- Show quoted text -

Thanks Milosz

I got it to work but when I enter in number all of my validation comes
up on the page how can I just get the error to say enter a number to
only come up and not the other messages?- Hide quoted text -

- Show quoted text -

I got it working by using a regular expression validator instead.