how to disable browser back and refresh buttons

Put this code..
code contain every possible solutions.

<System.Web.Services.WebMethod()> _
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Request.UrlReferrer Is Nothing OrElse String.IsNullOrEmpty(Request.UrlReferrer.AbsolutePath) Then
Session.Abandon()
Response.Redirect("../Default.aspx")
' Server.Transfer("../Default.aspx", False)
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Response.Expires = -1500
Response.CacheControl = "no-cache"
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Response.Cache.SetExpires(DateTime.UtcNow.AddHours(-1))
Response.Cache.SetNoStore()

Response.AppendHeader("Refresh", Convert.ToString((Session.Timeout * 1) + 1) + "; URL=Default.aspx")
FormsAuthentication.SignOut()

Session.Abandon()
End If

http://csharpdotnetfreak.blogspot.com/2009/04/disable-browser-back-button-javascript.html[^]

http://www.aspsnippets.com/Articles/Disable-Browser-Back-Button-Functionality-using-JavaScript.aspx[^]

Try these links

Why? There should be some better way to handle this. As you can do this,but its not a good idea. One thing is, you can open the required page in new window where there is no toolbar. e.g.

<script type="text/javascript">
  function opennew(url) {
      var win= window.open(url, '','scrollbars=no,menubar=no,resizable=yes,toolbar=no,location=no,status=no');
      }  
  </script>

with Onclick function you can call this function like:

onclick="opennew('http://www.google.com');"

Regards..:)