asked on

Prevent user from typing phone number on textbox with multiline

how can i prevent user from typing phone number or any word that repeats the characters like this: aaaa, ..........., bbbbbbbbb.

sometimes the user types like that because i put an rule that force the user to type more then 500 characters.

help on this.

Raheman M. Abdul

Use this regular expression to prevent repeated characters:

^(?=.{4,31}$)(?![-.])(?:(?!(.)\1{4})[-.\w])+(?<![-.])$

rafaelrgl

ASKER

it did not worked as expected:

<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server" 
                                                 ControlToValidate="txtdescription" Display="None" 
                                                 ErrorMessage="&lt;b&gt; Error-  Repeted characters too much." 
                                                 ValidationGroup="uservalidation" ValidationExpression="^(?=.{4,31}$)(?![-.])(?:(?!(.)\1{4})[-.\w])+(?<![-.])$"></asp:RegularExpressionValidator>
                                            <asp:ValidatorCalloutExtender ID="ValidatorCalloutExtender1" 
                                                 runat="server" CssClass="CustomValidatorCalloutStyle" Enabled="True" 
                                                 HighlightCssClass="highlight" PopupPosition="BottomRight" 
                                                 TargetControlID="RegularExpressionValidator2" Width="300px">
                                            </asp:ValidatorCalloutExtender>

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Rob

What happened?

rafaelrgl

ASKER

it worked, sorry, it was my mistake. what about phonenumbers, can i check for that too, and also can i check for url's so i can block those too.

rafaelrgl

ASKER

well, i test again, and it's really not working:

enter:

i love this car a lots, i just want to drive

it's not valid this input above, why? i should pass.

Rob

sorry i don't understand... what is wrong with "i love this car a lots, i just want to drive"... you said "i should pass". sorry this makes no sense to me

rafaelrgl

ASKER

i mean, it's saying there is repetitive characters on this sentence. So it should pass the regular expression ^(?=.{4,31}$)(?![-.])(?:(?!(.)\1{4})[-.\w])+(?<![-.])$

but it's blocking this sentence.

ASKER CERTIFIED SOLUTION

Rob

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