In this article I will explain with an example, how to prevent user from navigate to previous page using Back Button in Browser or the Back option in the Context Menu using AngularJS in ASP.Net Core MVC (.Net Core).
Note: For beginners in ASP.Net Core (.Net Core 7), please refer my article ASP.Net Core 7: Hello World Tutorial with Sample Program example.
 
One cannot disable the Browser Back Button functionality only thing that can be done is prevent them going back.
 
 

Controller

The Controller consists of following Action methods.

Action method for handling Home GET operation

This Action method gets called when the Anchor Link of Login View is clicked or Home View is refreshed.
 

Action method for handling Login GET operation

This Action method gets called when the Anchor Link of Home View is clicked or Login View is refreshed.
public class HomeController : Controller
{
    public IActionResult Home()
    {
        return View();
    }
 
    public IActionResult Login()
    {
        return View();
    }
}
 
 

Disabling Browser Back Button using AngularJS

Login View

The HTML Markup of Login View consists of:
div – For applying ng-app and ng-controller AngularJS directives.
Note: If you want to learn more about these directives, please refer my article Introduction to AngularJS.
 
The HTML Markup also consists of an HTML Anchor tag and its href property is set to name of Home View.
 

Disabling Browser Back Button Script

Inside the HTML Markup, first the following script file is inherited.
1. angular.min.js
Inside the AngularJS Controller, the timeout function is called which schedules the execution time with delay of 0 (zero) milliseconds.
Inside the timeout function, the $window.history.forward() method is called which navigates the browser forward one step in their history. Whenever Browser Back Button is clicked, this function immediately moves it one step forward.
Note: For more details on how to use $timeout service, please refer my article Using $timeout service in AngularJS.
 
Finally, the unload event handler is attached to the window using addEventListener method which returns NULL to disable (prevent) the Browser Back Button.
@{
    Layout = null;
}
 
<!DOCTYPE html>
 
<html>
<head>
    <title>Login</title>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
    <script type="text/javascript">
        var app = angular.module("MyApp", []);
        app.controller("MyController", function ($scope, $window, $timeout) {
            $timeout(function () {
                $window.history.forward();
            }, 0);
 
            $window.addEventListener('unload', function () {
                null;
            });
        });
    </script>
</head>
<body>
    <div ng-app="MyApp" ng-controller="MyController">
        <h3>Login</h3>
        <hr />
        <a href="/Home/Home">Redirect to Home</a>
    </div>
</body>
</html>
 

Home View

The HTML Markup of Home View consists of:
div – For applying ng-app and ng-controller AngularJS directives.
Note: If you want to learn more about these directives, please refer my article Introduction to AngularJS.
 
The HTML Markup of Home View also consists of an HTML Anchor tag and its href property of the Anchor link is set to name of Login View.
Note: HTML Anchor link is added to illustrate that the Login View will be prevented only using Browser Back Button and not when accessed using other means.
 
Inside the HTML Markup, first the following script file is inherited.
1. angular.min.js
The AngularJS Controller left empty as it is not required.
@{
    Layout = null;
}
 
<!DOCTYPE html>
 
<html>
<head>
    <title>Home</title>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
    <script type="text/javascript">
        var app = angular.module("MyApp", []);
        app.controller("MyController", function ($scope, $window) { });
    </script>
</head>
<body>
    <div ng-app="MyApp" ng-controller="MyController">
        <h3>Home</h3>
        <hr />
        <a href="/Home/Login">Redirect to Login</a>
    </div>
</body>
</html>
 
 

Screenshot

ASP.Net Core: Disable Browser Back Button using AngularJS
 
 

Browser Compatibility

The above code has been tested in the following browsers.
Microsoft Edge  FireFox  Chrome  Safari  Opera
* All browser logos displayed above are property of their respective owners.
 
 

Demo

View Demo
 
 

Downloads

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