Here are the 2 ways:

1. Session Variable: Use a session variable to track the state of the view.
2. Request Headers: Check for specific headers that indicate a refresh.

Hi Anu,

If you are trying to identify if a page in ASP.NET MVC is being refreshed or if it's being loaded for the first time (in the same tab or a new tab/browser), you can use a combination of server-side and client-side techniques.

The basic idea is to track whether the page has been previously visited in the same session or not.

You can find it using Session, localStorage, and JavaScript:

Steps:

1. Track if the page is loaded for the first time:
   • On the server side, use Session to check if the page is being loaded for the first time during the user's session.
2. Handle browser tab detection:
   • Use localStorage to track if the page is loaded in a new tab or a different browser window.
3. Show alert and close the tab:
   • If a new tab/browser is detected, show an alert and close the tab.

Example:
Controller (ASP.NET MVC):

public class HomeController : Controller
{
    public ActionResult Index()
    {
        // Check if the page is loaded for the first time in the session
        if (Session["FirstLoad"] == null)
        {
            Session["FirstLoad"] = true;
        }

        return View();
    }
}

View (Razor View Index.cshtml):

@{
    // Check if the session is loaded for the first time
    var isFirstLoad = Session["FirstLoad"] != null;
}




    
    


    
Welcome to the Home Page!

Explanation:

1. Server-Side Logic: The controller sets a Session["FirstLoad"] variable when the page is loaded for the first time during the session. This variable will remain set unless the session expires or the user opens the page in a new session.
2. Client-Side Logic:
   • localStorage is used to track if the page is already open in the current browser window. The value PageLoaded is set in localStorage when the page is loaded for the first time.
   • If the page is loaded again and localStorage.getItem('PageLoaded') exists, it means that the page is already open, possibly in another tab or window. In that case, an alert is shown and the tab is closed using window.close().
   • onunload event is used to clean up localStorage when the user closes the tab or refreshes the page, allowing proper detection when the page is reopened.

This will help you Anu, in detecting First Login or refreshed login.

Thanks

Hi, Anu

you can achive both output like for Detecting Page Load or Refresh & Show Alert and Close Tab if Page is Opened in a New Tab/Browser using sessionStorage.

Add this JavaScript code in your MVC View (demo.cshtml )