How can I redirect a user when a specific exception is cought with ASP.NET Core 2.2 project?

Question

I have a project that is written using C# on the top of ASP.NET Core 2.2 framework.

The application throws a custom exception when something unexpected happens.

For example, if the app can't find a default setting in the database, it throws ApplicationIsNotSetupException(). This exception indicates that the admin did not install the project using the installation process as they should. Therefore, I want to direct them to the installation controller. (i.e, SetupController.Install())

How can I redirect the user to s specific route if the ApplicationIsNotSetupException() was caught?

Answer 1

Here's a possibility:

// This should be before app.UseMvc
app.Use(async (context, next) =>
{
    try
    {
        await next();
    }
    catch (ApplicationIsNotSetupException)
    {
        context.Response.Redirect("/setup/install");
    }
});

I found this Question, there are some good answers there too.