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Should I be mixing .cshtml files and .razor files in my .NET 6 project?

I'm not trying to specifically create a Blazor Web application, rather I'm rewriting an old ASP.Net Framework application in Razor and the newest .NET (currently .NET 6). I've created a .razor component for my Footer that is going to appear in all of my pages. I'm unable to get it to display, I currently have this:
#section Footer {
<component type="typeof(NewProject.Pages.Footer)" render-mode="Static"/>
}
But then I have read that .razor files are supposed to be used in Blazor Web applications and they should be used instead of .cshtml files. I'm trying to stick to Razor pages and MVVM instead of MVC, and I'm still very new to both Razor and Blazor, and before I get too much further into this, I would like to know if I should instead create the Footer as a Partial View instead of a Blazor component. These are the files I've created.

Microsoft's answer, apparently, is a big yes. The default Blazor project uses cshtml as the foundation for the site, as well as for the scaffolded Identity system, and razor for everything else.
I know you're not planning to use Blazor, but the above indicates to me that they're meant to co-exist.

ASP.NET Core 2.1. Razor UI Class Library in MVC View

I'm currently working on an ASP.NET Core 2.1. RC1 Final (May 2018) demo application. I try to use the new Razor UI Library in my ASP.NET Core MVC application.
Thus, in my Solution I have 2 Projects:
ASP.NET Core MVC application
Razor Class Library
The structure of my Razor Class Library is very simple:
RazorClassLib1
Areas
MyFeature
Pages: Page1.cshtml
The cshtml of Page1.chtml looks like that:
#page
#model RazorClassLib1.MyFeature.Pages.Page1Model
#{
Layout = "_Layout";
}
<h1>Hello From the Razor ClassLib1</h1>
Now I want to use this Page1.cshtml Razor component in my MVC View. This feature would be useful to organize and reuse razor pages within my application.
Unfortunately I have no idea how to achieve this. I was following this example:
http://www.talkingdotnet.com/asp-net-core-2-1-razor-ui-as-class-library/
though it seems to work only for a razor page project, but I would need it in my MVC projct.
Do you know how to use a Razor Class Library in ASP.NET MVC Core 2.1. Views?
Thank you very much.

https://gunnarpeipman.com/aspnet/razor-class-library-mvc/
explains how to set it up.
There are some things to know:
Controllers must have AreaAttribute
Web application must have area route defined.
I think there work arounds using the areas, but I am researching this myself. will update the answer when I have figured it out.
Below link also explains how to make the area name dynamic:
https://blog.tech-fellow.net/2018/11/11/razor-ui-class-library-with-dynamic-area-name/

ASP.NET csharp view without razor and aspx

I'm developing a SPA with ASP.NET MVC for back-end and i was quite curious - Is there any way to build view only using c# to generate my html without using any razor pages or aspx?

You can do this by returning a content, more info here

Is Razor compulsory in ASP.NET MVC 5? [duplicate]

This question already has answers here:
Using ASPX View Engine with MVC 5
(2 answers)
Closed 7 years ago.
I am new to ASP.Net MVC 5 and I want to know if Razor view engine is compulsory, or can you use ASPX view engine?
I try to create new application but I am not getting option to change the view engine.

Razor views are not compulsory. You can use aspx views. When creating your project there is a dropdown that allows you to select which view engine you want the template to use, if you are creating a project from a template.
However, this option doesn't make any difference to your project apart from the views that vs creates in the template. For example, change the name of one of your views, eg. Change home.cshtml to bob.cshtml. Run the project and navigate to the page that uses this view. You will get an error page which displays a list of views that the framework has attempted to find in different folders. This is an operation that uses convention and is the default method mvc will use to find views. Anyway, in the list you will see aspx and cshtml files, so you can go ahead and create an aspx view and mvc will pick it up. Note that the order of the list in the error message is the order mvc will look up each view. It will use the first one it comes across.

Razor views are not compulsory in ASP.net MVC..in ASP.net MVC there are two view Engine are there:
Razor View Engine:
1.Razor View Engine is an advanced view engine and introduced with MVC3. This is not a language but it is a markup syntax.
2.In Razor View Engine we use Layouts.
3.Razor Engine is a little slow compared to Aspx Engine.
Web Form/Aspx View Engine
1.ASPX View Engine is the default view engine for the ASP.NET MVC that is included with ASP.NET MVC from the beginning.
2.In ASPX View Engine we use masterPages.

percentage tags in cshtml

Following along on a tutorial in MVC, would you tell me the alternative to this in a ASPX page
<div>
<%=ViewData["CurrentTime"]%>
</div>
In a cshtml page, the default view type in MVC 4 on VS2013. When I try the above, the literal meaning is displayed. i.e. ViewData["CurrentTime"] instead of the value DateTime.now

When you using a cshtml. You are working with Razor engine.
In Razor engine, You need to use # like
#ViewData["CurrentTime"]
<%=ViewData["CurrentTime"]%> is a ASP.Net engine code

There are two engines in MVC: Razor and ASP.NET WebForms.
.cshtml filles are the files using Razor engine and this is a default engine of ASP.NET MVC from the third version.
The syntax you are using would work with the old WebForms engine.
So you should write:
#ViewData["CurrentTime"]
in case you use ViewData or
#ViewBag.CurrentTime
in case you use ViewBag which is more common when using Razor view engine and in general newer version of ASP.NET MVC .