Why maxLength is not working

Question

0.00/5 (No votes)

See more:

I use a content page. In the following code I want to limit the characters to 200.
It is allowing to enter more than that. How to restrict it.

XML

<asp:TextBox ID="TBMessage" runat="server"  OnTextChanged="TBMessage_TextChanged" AutoPostBack="True" MaxLength="200"
               style="z-index: 1; top: 485px; left: 600px; position: absolute; resize:none ; height: 233px; width: 400px"
               TextMode="MultiLine"></asp:TextBox>

Posted 19-Mar-14 18:24pm

S.Rajendran from Coimbatore

Add a Solution

3 solutions

Add a Solution

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

King Fisher · Answer 1 · 2014-03-19T18:41:00

Solution 1

maxlength for multiline

Posted 19-Mar-14 18:41pm

King Fisher

Abhinav S · Answer 2 · 2014-03-19T18:43:00

Solution 2

MaxLength will not work with a MutliLine textmode setting.
To handle such scenarios a custom validation scenario with RegularExpressionValidator needs to be built.
An example would be ValidationExpression="^(\w*)(\s*)(.*){15}$" (15 would be length).

Posted 19-Mar-14 18:43pm

Abhinav S

Comments

VICK 20-Mar-14 0:51am

MY 5+. :)

Abhinav S 20-Mar-14 1:56am

Thanks.

Aarti Meswania 20-Mar-14 2:37am

5+! :)

Abhinav S 20-Mar-14 3:58am

Thanks.

Aarti Meswania 20-Mar-14 4:23am

welcome :)

Peter Leow · Answer 3 · 2014-03-19T19:21:00

Try this, the max len in this example is 10:

XML

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default23.aspx.cs" Inherits="Default23" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
    <script type="text/javascript">
        function enforceMaxLen(field, maxlen) {
            if (field.value.length > maxlen)
                field.value = field.value.substring(0, maxlen);
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <asp:TextBox ID="TextBox1" runat="server"
         onkeydown="enforceMaxLen(TextBox1, 10);"
         onkeyup="enforceMaxLen(TextBox1, 10);"
        Style="height: 250px; width: 300px" TextMode="MultiLine"></asp:TextBox>
    </form>
</body>
</html>

It works even if you try to copy and paste more than the maxlen.

Why maxLength is not working

3 solutions

Solution 1

Solution 2

Solution 3

Add your solution here

Preview 0

Why maxLength is not working

3 solutions

Solution 1

Solution 2

Solution 3

Add your solution here

Preview 0

Existing Members

...or Join us