User1893941629 posted
my friend go stuck in this problem, but found the answer
so i thought it may help others also,,
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="I1.aspx.cs" Inherits="t2.I1" %>
<!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>Post Back</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<div>
<p>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
Textbox one
</p>
<p>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
Textbox two
</p>
</div>
<asp:Button ID="Button1" runat="server" Text="Shift"
OnMouseOver="text(); return false;"
/>
</div>
<div>
<p>post back occurs, as i return something to server</p>
<asp:Button ID="Button2" runat="server" Text="Click Me | Postback" OnClientClick="text()" />
</div>
<div>
<p>post back does not occurs, as my return is false</p>
<asp:Button ID="Button3" runat="server" Text="Click Me | No Post back"
OnClientClick="text(); return false;" />
</div>
</form>
</body>
</html>
<script type="text/javascript" language="javascript">
function text()
{
document.getElementById('TextBox2').value = document.getElementById('TextBox1').value;
}
</script>
