Text Box 'character' Validation

[Napalm]

Hi All,
i'm new to posting in this forum , yet i have been lurking for a while.

I was wondering if anyone has advice on how i can add a validation of a textbox .
I'd like to set a min of 2 characters & a max of 50.
I've searched around at previous posts & different sites , but i havent had a clar example
Thanks in advance
Napalm

[Napalm]

Hi,
i've sorted this out . It was just a simple expression.

however,
if anyone could help me with an expression to detect if a user duplicates an input code ?.

Thanks

[bharathreddy]

Dear Napalm,

If u want the validations to be done on the client side then:

Note : textbox name = txtbox1
submitbutton = btnSubmit


Javascript function
--------------------------:
function validation1()
{
var txtbox1= document.getElementById('txtbox1');

if(txtbox1.length>2 && txtbox1.length<50)
{
return true;
}
else
{
alert('Enter min 2 charts and max 50');
return false;
}

}


In html:

<input type=button name=btnSubmit onclick='return validation1();'>

summary: what happens is when a user enters less than 2 chars or more than 50 chars then error message will be displayed ("Enter min 2 charts and max 50'"). And the form is not posted in this case.

[Napalm]

Thank bharathreddy
i appreciate the info.
napalm

[nmsreddi]

hello naplam

can u post the solution that you found


regards
nmsreddi

[Napalm]

This was the validation code that i was helped with.
Thanks



If Len(txtInputDesc.Text) > 1 And Len(txtInputDesc.Text) < 51 Then
'All OK
Else
MsgBox("Please Enter A Description Between 2 and 50 characters")
End If



napalm

[nmsreddi]

Hello napalm

this is the code in code behind have you not used any script becoz if you go for web application using c#.net you can't find msgbox ,i am looking for script for validating ,for my webapplication using c#.net


any how many thanks for your reply

thanks &regards

nmsreddi