I am performing both clientside and serverside validation , clientside-jquery and serverside-asp.net I am using custom validators for checking numeric textboxes.The issue is there are few textboxes that need to check for numeric data and length of the data and also digits after decimal.so i guess i cannot create a common onservervalidate function for all of them as their validation needs differ. So do i need to use different validation controls for all of them ..can i call three different method on one onservervalidate... any suggestions thanks
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Normally you would use one validator for each control to be validated.Tim Schmelter– Tim Schmelter2012-03-02 08:38:29 +00:00Commented Mar 2, 2012 at 8:38
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@TimSchmelter that means if a textbox requires to be numeric , also length of data should be 10 , and also it should have 2 digits after decimal ,,,, then i will require three custom validators for numeric data ,length and decimal ....Is it so ...Priyank Patel– Priyank Patel2012-03-02 08:42:40 +00:00Commented Mar 2, 2012 at 8:42
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2 Answers
You can use the regex class. Within that you only need one function to validate your data with all your requirements.
the regex class is a powerful class where u can define complex patterns that the string has to match. this is one of my simpler regex validator function for my page which returns a boolean if the string send in the parameter (pass) matches the pattern.
Public Function validatepass(ByVal pass As String) As Boolean
Dim pattern As String = "^\S{6}\S*$"
Dim MatchString As Match = Regex.Match(pass, pattern)
If MatchString.Success Then
Return True
Else
Return False
End If
End Function
it works like this: Dim pattern As String = "^\S{6}\S*$" // in this line u define the pattern, ^ is the left end of the string, and $ is the right end \S{6} is matching the first 6 chars of the string and accepts ANY chars except whitespace chars \S* does nearly the same, but * means that it can be any number of chars ( again any chars except whitespace chars )
so effectivly this pattern does not accept whitespaces and requires the string to be at least 6 chars long
for a comprehensive guide u should read this : http://www.codeproject.com/Articles/9099/The-30-Minute-Regex-Tutorial
and in ur case the regex pattern should be this : ^\d{10},\d{2}$
u can use the same pattern syntax for serverside validation via a function like this, or clientside by creating a customregex validator and using the pattern in the appropriate property.
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Priyank Patel
could you just elaborate a bit more , as it would be more helpful
The issue is there are few textboxes that need to check for numeric data and length of the data and also digits after decimal.
So you basically have three needs...
- Must have some value.
- Numeric value
- Decimal value
Here is three in one solution..using ReguarExpressionValidation
<asp:RegularExpressionValidator ID="ValExp" runat="server"
ValidationExpression="^[0-9]+(\.[0-9]+)$"
ControlToValidate="Controlname"></asp:RegularExpressionValidator>
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