Regular Expression for Textbox (whose mode is multiple) to allow 100 character

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In my form I used textbox whose mode is multiple.I want to allow only 100 character (including number,special character and char).Maxlength will not work with textbox.What will be my Regular Expression?

ASP.NET

<asp:TextBox ID="tb" runat="server" TextMode="MultiLine" ></asp:TextBox>

//Regular Expression validator
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" 
    runat="server" ControlToValidate="tb" 
    ErrorMessage="Please enter maximum 100 charachters."
 SetFocusOnError="true" ValidationExpression="^[a-zA-Z.]{0,100}$">
    </asp:RegularExpressionValidator>

This include character only.I want number,spl char or any but count should not greater than 100.How to do that?

Posted 6-Jan-16 17:48pm

Member 11589429

Updated 6-Jan-16 17:58pm

PIEBALDconsult

v3

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PIEBALDconsult 6-Jan-16 23:59pm

"Maxlength will not work with textbox"

Prove it.

Member 11589429 7-Jan-16 0:03am

Maxlength work with textbox when textmode is singal not multiple.By default textmode is singal.

jgakenhe 7-Jan-16 0:34am

You need to count the characters in JavaScript onkeyup and onkeydown: http://stackoverflow.com/questions/1334286/specifying-maxlength-for-multiline-textbox It is best if you use a function so you can reuse it.

Then if they have JavaScript turned off, you can validate the string length in your code behind on the button click event.

If I were at work, I'd provide my solution which I use quite often, but I won't be there for another 7 hours.

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Wendelius · Answer 1 · 2016-01-06T18:30:00

Solution 1

If you want to allow any character, try simply

HTML

ValidationExpression="(.{0,100})"

or

HTML

ValidationExpression="^(.{0,100})$"

Posted 6-Jan-16 18:30pm

Wendelius

Comments

ridoy 7-Jan-16 1:03am

a 5

Wendelius 8-Jan-16 1:35am

Thank you :)