Скачать или смотреть Resolving the ASP.NET Core Default Routing Issue: How to Redirect to Your Desired Page

Struggling with default routing in ASP.NET Core? This guide explains how to properly configure routing to redirect users to your desired page instead of the default one.
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This video is based on the question https://stackoverflow.com/q/64763074/ asked by the user 'Thaqif' ( https://stackoverflow.com/u/14319960/ ) and on the answer https://stackoverflow.com/a/64763146/ provided by the user 'Nirali Akabari' ( https://stackoverflow.com/u/9155475/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving the ASP.NET Core Default Routing Issue: How to Redirect to Your Desired Page

When developing a web application using ASP.NET Core, you might encounter an issue with default routing not behaving as expected. This can be particularly frustrating if you've made changes intending to redirect users to a specific page, only to find they are still being directed to the previous default page.

In this guide, we'll explore a common scenario where a developer wants to change the default route from the Login page to the Main page and resolve the issues that arise in doing so.

Understanding the Problem

The Scenario

In your ASP.NET Core application, you might have set up routes in your Startup.cs file, defining the default route. In this case, the goal was to change the routing configuration to make the Main action the default, instead of the existing Login action. However, the application continues to redirect to the Login page even after making the necessary changes.

Here's a snippet of the original code causing the confusion:

[[See Video to Reveal this Text or Code Snippet]]

Key Files Involved

Startup.cs - Where routing is configured.

HomeController.cs - Where actions are defined.

In the controller, the actions are set up as follows:

[[See Video to Reveal this Text or Code Snippet]]

Unfortunately, despite the apparent correction in the routing logic, the redirection still defaults to the Login action.

The Solution

Identifying the Root Cause

The issue likely stems from the SessionTimeoutAttribute applied to the Main action. This custom attribute may be enforcing a redirection to Login if certain session conditions are not met.

Steps to Resolve the Issue

Comment Out the Session Timeout Attribute
Temporarily disable the SessionTimeout attribute to determine if it’s the source of the redirection issue. You can modify the action decorator like this:

[[See Video to Reveal this Text or Code Snippet]]

Test the Application
Run your application and check if you are now redirected to the Main page. If you successfully reach the Main page, the SessionTimeoutAttribute was indeed the cause.

Modify the SessionTimeoutAttribute Logic
If you require this attribute for session management, review its implementation. Look for any redirection logic within the SessionTimeoutAttribute that might redirect to the Login action. Modify it to fit your new routing logic, ensuring that it appropriately directs users to Main when the session is valid.

Example Modification in SessionTimeoutAttribute

Suppose your SessionTimeoutAttribute check for session validity looks something like this:

[[See Video to Reveal this Text or Code Snippet]]

You should alter it so that if the session is valid, it does not redirect the user to Login but allows them to access Main.

Conclusion

By understanding the core issue related to the SessionTimeoutAttribute and how it interacts with your routing logic, you can effectively change the default routing of your ASP.NET Core application.

Through this guide, we’ve walked through diagnosing the problem and implementing a solution so that your application redirects users to the desired Main page instead of the previous Login page.

If you continue to encounter issues or have further questions, feel free to explore additional community resources or seek guidance from fellow developers. Happy coding!