How to convert TextBox TextMode SingleLine to MultiLine
asp.net textbox web server control is a very dynamic control. you can use textbox control as a single line text input control
or as a multi line text input control or as a password input control. if you insert a single line mode enabled textbox on web page,
then you can convert it as a multiple line input mode textbox control programmatically. to convert the textbox text input mode you need to
change the textbox TextMode property value. textbox TextMode MultiLine property is render a html textarea element. this tutorial demonstrate you
how can we convert textbox TextMode property SingleLine to MultiLine.
TextBoxMultiLine.aspx
<%@ Page Language="C#" %>
<!DOCTYPE html>
<script runat="server">
protected void Button1_Click(object sender, System.EventArgs e)
{
TextBox1.TextMode = TextBoxMode.MultiLine;
}
protected void Button2_Click(object sender, System.EventArgs e)
{
TextBox1.TextMode = TextBoxMode.SingleLine;
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>How to convert TextBox TextMode SingleLine to MultiLine</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:Green">TextBox Example: SingleLine MultiLine</h2>
<asp:Label
ID="Label1"
runat="server"
Text="Address"
>
</asp:Label>
<asp:TextBox
ID="TextBox1"
runat="server"
>
</asp:TextBox>
<br /><br />
<asp:Button
ID="Button1"
runat="server"
ForeColor="Magenta"
Text="TextBoxMode MultiLine"
OnClick="Button1_Click"
Font-Bold="true"
/>
<asp:Button
ID="Button2"
runat="server"
Font-Bold="true"
ForeColor="Magenta"
Text="TextBoxMode SingleLine"
OnClick="Button2_Click"
/>
</div>
</form>
</body>
</html>



- How to set, change Label font size programmatically
- How to set, change Label ForeColor (font, text color) programmatically
- How to show, hide, visible Label programmatically
- How to set, change TextBox border style
- How to set, change TextBox font size
- How to set, change TextBox ForeColor (font, text color)
- How to set, change TextBox height programmatically
- How to convert, change TextBox TextMode SingleLine to Password
- How to use theme and skin in TextBox