How to isolate Post handler method with multiple Submit buttons in 1Form in RazorPages

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How to isolate Post handler method with multiple Submit buttons in 1Form
Environment: ASP.NET core 3.1, Visual Studio 2019

Index.cshtml


<form method="post">
    <button type="submit" asp-page-handler="View">View</button>
    <button type="submit" asp-page-handler="Prev">Prev</button>
    <button type="submit" asp-page-handler="Next">Next</button>
</form>

cs:Index.cshtml.cs


public class IndexPage : PageModel
{
	public void OnPostView()
	{
	}
	public void OnPostPrev()
	{
	}
	public void OnPostNext()
	{
	}
}

reference:

How to distinguish multiple buttons in ASP.NET Core MVC?
https://ja.stackoverflow.com/questions/47925/asp-net-core-mvc%E3%81%A7-%E8%A4%87%E6%95%B0%E3%83%9C%E3%82%BF%E3%83%B3%E3%82%92%E5%8C%BA%E5%88%A5%E3%81%99%E3%82%8B%E3%81%AB%E3%81%AF

Determine which button was pressed on a Form with multiple buttons
https://qiita.com/echoprogress/items/17e85ad489bddf07b540

ASP.NET Core MVC I want to change the submit destination on a Form with multiple buttons
http://heinlein.hatenablog.com/entry/2018/02/21/151026

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