Below JavaScript code used to restrict the space in the textbox
<%@ Page
Language="C#"
AutoEventWireup="true"
CodeFile="Restrict
space in textbox using JavaScript.aspx.cs" Inherits="Restrict_space_in_textbox_using_JavaScript"
%>
<!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></title>
<script type="text/javascript">
function DisableSpace() {
if (event.keyCode == 32) {
event.returnValue = false;
return false;
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server"
Text="Name"></asp:Label>
<asp:TextBox ID="txtLoginID"
onkeypress="return
DisableSpace()" runat="server"></asp:TextBox>
<br />
<asp:Label ID="Label2" runat="server"
Text="Password"></asp:Label>
<asp:TextBox ID="txtPassword"
TextMode="Password"
runat="server"></asp:TextBox>
<br />
<br />
<asp:Button ID="btnLogin"
runat="server"
Text="Login"
/>
</div>
</form>
</body>
</html>
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