Question

I’m having difficulty putting together a regular expression for a numeric input of 0-15.

I have tried this expression:

^([9]{1,1}|[0-1][0-5])$   

<asp:FilteredTextBoxExtender ID="TMPFiltered" runat="server" FilterMode="ValidChars"
                                                FilterType="Custom" ValidChars^([9]{1,1}|[0-1][0-5])$" TargetControlID="txtTMP" />

however it is allowing for higher maximums than 15. Where is my syntax incorrect? Any help is appreciated, thanks.

Answer 1

You were almost there

^([1-9]|1[0-5])$ is what you need

The only change i made in your regex [9]{1,1} to [1-9]..no need of {1,1} since its already matching 1 time in [9]