In this example i'm explaining how to disable browser's back button to avoid user going to previous page by clicking on back button of browser, for this we need to use javascript to prevent user navigating to previous page by hitting back button.
Just put this javascript on the html section of aspx page above head section
<script type = "text/javascript" >
function disableBackButton()
{
window.history.forward();
}
setTimeout("disableBackButton()", 0);
</script>
function disableBackButton()
{
window.history.forward();
}
setTimeout("disableBackButton()", 0);
</script>
We need to put it on the html section of the page which we want to prevent user to visit by hitting the back button
Complete code of the page looks like this
<%@ Page Language="C#" AutoEventWireup="true"
CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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>Untitled Page</title>
<script type = "text/javascript" >
function disableBackButton()
{
window.history.forward();
}
setTimeout("disableBackButton()", 0);
</script>
</head>
<body onload="disableBackButton()">
<form id="form1" runat="server">
<div>
This is First page <br />
<br />
Go to Second page
<br />
<br />
<asp:LinkButton ID="LinkButton1" runat="server"
PostBackUrl="~/Default2.aspx">Go to Second Page
</asp:LinkButton></div>
</form>
</body>
</html>
CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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>Untitled Page</title>
<script type = "text/javascript" >
function disableBackButton()
{
window.history.forward();
}
setTimeout("disableBackButton()", 0);
</script>
</head>
<body onload="disableBackButton()">
<form id="form1" runat="server">
<div>
This is First page <br />
<br />
Go to Second page
<br />
<br />
<asp:LinkButton ID="LinkButton1" runat="server"
PostBackUrl="~/Default2.aspx">Go to Second Page
</asp:LinkButton></div>
</form>
</body>
</html>
If you are using firefox then use <body onunload="disableBackButton()"> instead of onload
If you want to disable back button using code behind of aspx page,than you need to write below mentioned code
C# code behind
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
string strDisAbleBackButton;
strDisAbleBackButton = "";
ClientScript.RegisterClientScriptBlock(this.Page.GetType(), "clientScript", strDisAbleBackButton);
}
VB.NET code behind
Protected Overloads Overrides Sub OnPreRender(ByVal e As EventArgs)
MyBase.OnPreRender(e)
Dim strDisAbleBackButton As String
strDisAbleBackButton = ""
ClientScript.RegisterClientScriptBlock(Me.Page.[GetType](), "clientScript", strDisAbleBackButton)
End Sub
We can also achieve this by disabling browser caching or cache by writing this line of code either in Page_load event or in Page_Init event
protected void Page_Init(object Sender, EventArgs e)
{
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.Now.AddSeconds(-1));
Response.Cache.SetNoStore();
}
Doing this,user will get the page has expired message when hitting back button of browser{
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.Now.AddSeconds(-1));
Response.Cache.SetNoStore();
}
Have fun
Download the sample code attached
Other articles on javascript:
1. Highlight gridview row on mouse over using javascript in asp.net and C# c-sharp
2. Disable copy paste cut and right click in textbox on aspx page using javascript
3 .Mozilla firefox JavaScript window.close() not working / does not work in firefox
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23 comments:
Hello
A good post with wonderful ideas
www.supirscience.blogspot.com
www.mnewsalert.blogspot.com
This post has been removed by the author.
Worked for me!!! Thanks.
Not working ...I am still able to browse back..
@happy:
Which browser your are using ?
Please paste ur code here so that i can look into
hi :) thanks for this post. I want to disable the browser catching through c# code and have tried what you have suggested but it is not working... the javascript code you have suggested is working fine but i want to disable browser catching. I am using IE7. The tool i am using is visual studio 2005, asp.net 2.0... please help me...
Hi Amit,
I have tried both of your solutions however none of them is working for me. I am able to use 'Back' button while i m on the second page.
What I am doing is, I created a simple HTML/JS page with one hyperlink to another dummy page with just text message in it. Now, while I am on the second page, my browser does "Allow" me to move back by clicking on the 'Back' button.
I tried C# version by pasting the C# code in page load as well as init of second page, but no success.
Can you help me?
Thanks,
Sumeet
@sumeet:
Which browser u r using ? if you are using firefox than u need to write onunload instead of onload
Also check whether javascript is enabled in your browser or not ?
I've checked the code again and it's working fine for me in IE or Firefox
Check this sample code
And do let me know whether it works for you or not ?
Amit, Thanks it worked last time after writing to you.
I am using IE6 JS is enalbed, can you tell me how can I make a page 'Do not store in cache' using C#? I am also using .Net 3.5 Framework
@Above:
Code mentioned below is used for disabling browser cache in ASP.NET
protected void Page_Init(object Sender, EventArgs e)
{
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.Now.AddSeconds(-1));
Response.Cache.SetNoStore();
}
Do you know any way by which I can trap the Back button when it is clicked so that I can show an alert message to the user.
Also by using above code I have noticed that although the page does not reside in Temporary folder however, is there any possibility that I can also deny it from storing in the "Drop down" of BACK button??
Please suggest.
Thanks,
Sumeet
Is there any way I can trap Browser BACK button (IE6 is my browser)) and do something else on it?
Thanks,
Sumeet
wat about vb.net....if i hav to do same work wid it....plz help me out!
This post has been removed by a blog administrator.
This post has been removed by a blog administrator.
@prairana:
I've updated the code in article on how to disable back button using C# or VB.NET code behind.
Read it again and let me know if it solves ur query ?
Thanks :)
how can i disable the refresh button using c#.net?
@Above:
For detecting page refresh read my article mentioned below
Detect Page refresh in ASP.NET
Hi amit, I was used ur code ...But i need ur help... i used ur code behind in C# after session expire on LogOut button click event.. like that
logOut_click....
{
Session["UserName"]="";
used ur code behind code in C#
ClientScript.RegisterClientScriptBlock(this.Page.GetType(), "clientScript", strDisAbleBackButton);
}
But i had a error on ClientScript
How can solve this problem
Hi amit, I used ur C# code behind code in log out button click event....
but i got error in line no 8. i.e ClientScript
How i can solve this error.. I used internet explorer 6.0 Pls help me...
Hi amit, I used ur C# code behind code in log out button click event....
but i got error in line no 8. i.e ClientScript
How i can solve this error.. I used internet explorer 6.0 Pls help me...
How do I do disable the back button in classic ASP? I am a beginner in classic ASP. New to .NET also.
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