How to set the limit for multiline textbox

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Hi,
I am Using MultiLine Textbox now i want to allow all the characters in it and also i want to set the limit of the textbox to 150 characters. So iwant to use the regular expression so any one can help me.
i am using this regular expression:

"^[A-Za-z0-9\s!@#$%^&*()_+=-`~\\\]\[{}|';:/.,?><]*{1,150}$"

All working fine but it does not limit the characters to 150

Thanks in advance.

Posted 27-Oct-14 20:05pm

Member 11099119

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murkalkiran 28-Oct-14 2:22am

onkeypress="return this.value.length<=10" //replace 10 with the max length you want

Robert Welliever 28-Oct-14 2:41am

That is about as beautiful as code gets. More of a solution than a comment though.

Member 11099119 28-Oct-14 2:42am

No i Want it in regular expression only
Anyway thank you

Robert Welliever 28-Oct-14 3:04am

That doesn't make any sense. A regular expression wouldn't set a limit on the number of characters entered but murkialkiran's code would. Are you sure you know what question you asked? You have to latch onto one of the textbox's events in order to know if someone is altering the text.

Member 11099119 28-Oct-14 3:08am

oh ok thank you

Vani Movva 28-Oct-14 6:59am

This is very Best code. Working very nice without any java script or jquery.

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murkalkiran · Answer 1 · 2014-10-27T20:23:00

XML

<script language=JavaScript>
<!-- Beginning of JavaScript -
function textCounter(field, countfield, maxlimit) {
    if (field.value.length > maxlimit) {
        field.value = field.value.substring(0, maxlimit);
    } else {
        countfield.value = maxlimit - field.value.length;
    }
}
//  End -->>
</script>
<html>
    <head>
        <meta name="GENERATOR" Content="ASP Express 4.5">
        <title>Untitled</title>
    </head>
    <body>
        <form id="form1" Runat="server">
            Characters Left:
                <asp:TextBox
                    BackColor="Blue"
                    BorderStyle="None"
                    Width="30"
                    ForeColor="White"
                    Font-Bold="True"
                    id="txtLen"
                    Runat="server" Text="100" /><br>
            Enter comments:<br>
            <asp:TextBox id="txtmessage"
                Columns="40" Rows="4"
                TextMode="MultiLine"
                onkeydown="textCounter(this.form.txtmessage,this.form.txtLen,100)"
                onkeyup="textCounter(this.form.txtmessage,this.form.txtLen,100)"
                Runat="server" />
        </form>
    </body>
</html>