Asp.net: Auto re-size textbox control
Resize Asp.net multiline textbox automatically when we Enter text:
Asp.net MultiLine textbox:
In this post we want to create a simple Example of Asp.net text box control. When we enter data in this text box control we want to the length
(re-size height and width) of text box. In this tutorial we give many example
related to Asp.net text box as like Limitation
of Characters in Asp.net Textbox
, Displaying
the textbox value in javascript Messagebox , How to
use alert and display textbox value by javascript , Introduction
of ASP.NET Server Control Basics , jquery
disable or Enable submit button after Textbox validation etc.
We take a Example here in this we consider a text box and
try to Auto re-size it when we enter value in text box.
JavaScript function for resize Asp.net control:
Text box auto resize function.
function resizemultilineTextBox(txt) {
txt.style.height = "1px";
txt.style.height = (1 + txt.scrollHeight) + "px";
}
Asp.net web page code with Textbox:
<%@ Page
Language="C#"
AutoEventWireup="true"
CodeFile="Autoresizetextboxcontrol.aspx.cs"
Inherits="Autoresizetextboxcontrol"
%>
<!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>
function resizemultilineTextBox(txt) {
txt.style.height = "1px";
txt.style.height = (1 + txt.scrollHeight) + "px";
}
</script>
<style type="text/css">
.style1
{
color: #990000;
text-decoration: underline;
font-family: Arial, Helvetica, sans-serif;
}
</style>
</head>
<body>
<form id="form2" runat="server">
<div align="center"
style="height: 123px; background-color:
#6699FF">
<h1 class="style1">Auto
Resize Asp.net TextBox Control</h1>
<table style="width: 494px">
<tr>
<td>Enter Text Here: </td>
<td>
<asp:TextBox ID="txtDescription" runat="server"
onkeyup="resizemultilineTextBox(this)"
TextMode="MultiLine"
Width="212px"></asp:TextBox>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
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