page should not go another page when press back space button in keybord

We can also achieve this by disabling browser caching in code behind write the following lines of code in Page_Init event or Page_Load event and don’t forgot to add namespace using System.Web; because HttpCacheability related to that namespace

protected void Page_Init(object sender, EventArgs e)
{
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.Now.AddSeconds(-1));
Response.Cache.SetNoStore();
}

We need to place this code in a page wherever we need to disable browser back button. If we use above caching method to disable browser back button that will display webpage expired message like this

------------------------------ OR ------------------------------------------------




<script type = "text/javascript" >

function preventBack(){window.history.forward();}

setTimeout("preventBack()", 0);

window.onunload=function(){null};

</script>


I have tested the script in the following browsers

1. Internet Explorer 5.55

2. Internet Explorer 6

3. Internet Explorer 7

4. Mozilla Firefox 3

5. Opera 9

6. Safari 4

7. Google Chrome