how to count textbox character and show message

Posted by Shanky11 under Interview Questions on 2/11/2013 | Points: 10 | Views : 1506 | Status : [Member] | Replies : 4

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i have a textbox and i wants that on writting into it we can write only 120 characteand and a label should be there for counting

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Posted by: Murugavelmsc on: 2/11/2013 [Member] Starter | Points: 25

0	TextBox1.Text.Trim().Length Regards, Murugavel S murugavel.sadagopan@gmail.com http://murugavelmsc.blogspot.in/ Shanky11, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Satyapriyanayak on: 2/11/2013 [Member] [MVP] Silver | Points: 25

0	<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Limit_number_of_characters_TextBox._Default" %> <!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 runat="server"> <title>Untitled Page</title> <script type="text/javascript"> function validateLimit(obj, divID, maxchar) { objDiv = get_object(divID); if (this.id) obj = this; var remaningChar = maxchar - obj.value.length; if (objDiv){ objDiv.innerHTML = remaningChar + " characters left"; } if (remaningChar <= 0) { obj.value = obj.value.substring(maxchar, 0); if(objDiv) { objDiv.innerHTML = "0 characters left"; } return false; } else { return true; } } function get_object(id) { var object= null; if (document.layers) { object = document.layers[id]; } else if (document.all) { object = document.all[id]; } else if (document.getElementById) { object = document.getElementById(id); } return object; } </script> </head> <body> <form id="form1" runat="server"> <div> <div id="lblMsg1">120 characters left</div> <asp:TextBox ID="TextBox1" runat="server" Height="50px" MaxLength="120" TextMode="MultiLine" Width="600px" ToolTip="Summary:(120 characters)" onkeyup="return validateLimit(this, 'lblMsg1', 120)"/> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox1" Display="Dynamic" SetFocusOnError="True"></asp:RequiredFieldValidator> <br /><br /> </div> </form> </body> </html> Thanks If this post helps you mark it as answer If this post helps you mark it as answer Thanks Shanky11, if this helps please login to Mark As Answer*. \| Alert Moderator

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Limit_number_of_characters_TextBox._Default" %>

<!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 runat="server">
<title>Untitled Page</title>
<script type="text/javascript">
function validateLimit(obj, divID, maxchar) {
objDiv = get_object(divID);
if (this.id) obj = this;
var remaningChar = maxchar - obj.value.length;
if (objDiv){
objDiv.innerHTML = remaningChar + " characters left";
}
if (remaningChar <= 0) {
obj.value = obj.value.substring(maxchar, 0);
if(objDiv) {
objDiv.innerHTML = "0 characters left";
}
return false;
}
else
{ return true; }
}
function get_object(id) {
var object= null;
if (document.layers) {
object = document.layers[id];
} else if (document.all) {
object = document.all[id];
} else if (document.getElementById) {
object = document.getElementById(id);
}
return object;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<div id="lblMsg1">120 characters left</div>
<asp:TextBox ID="TextBox1" runat="server" Height="50px" MaxLength="120"
TextMode="MultiLine" Width="600px" ToolTip="Summary:(120 characters)"
onkeyup="return validateLimit(this, 'lblMsg1', 120)"/>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
ControlToValidate="TextBox1" Display="Dynamic"
SetFocusOnError="True">*</asp:RequiredFieldValidator>
<br /><br />

</div>
</form>
</body>
</html>

Thanks
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If this post helps you mark it as answer
Thanks

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Posted by: Vforvijay on: 2/11/2013 [Member] Starter | Points: 25

0	Hi.. You can refer the below link to show balance character count using textbox and label control http://www.dotnetcode.in/2012/04/display-characters-counter-for.html Shanky11, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Satyapriyanayak on: 2/11/2013 [Member] [MVP] Silver | Points: 25

0	For windows using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace Count_textbox_values { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void textBox1_TextChanged(object sender, EventArgs e) { textBox1.MaxLength= 120; lblCount.Text = "Total characters are: " + textBox1.Text.Length; } } } If this post helps you mark it as answer Thanks Shanky11, if this helps please login to Mark As Answer. \| Alert Moderator

For windows

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Count_textbox_values
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void textBox1_TextChanged(object sender, EventArgs e)
{
textBox1.MaxLength= 120;
lblCount.Text = "Total characters are: " + textBox1.Text.Length;
}
}
}

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