Code examples that is used on http://www.minepla.net/2017/09/asp-net-core-razor-pages-nedir/

Index.cshtml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using HelloRazor.Model;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;

namespace HelloRazor.Pages
{
    public class IndexModel : PageModel
    {

        public DateTime Today
        {
            get
            {
                return DateTime.Now;
            }
        }


        public void OnPost()
        {

        }

        public void OnGet(int id = 0)
        {

        }
    }
}

IndexModel.cshtml

@page
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

@using HelloRazor.Pages
@using HelloRazor.Model
@using Microsoft.AspNetCore.Mvc.RazorPages
@model IndexModel
@{
    ViewData["Title"] = "Home page";

}
@functions
{
    public class IndexModel : PageModel
    {

        public DateTime Today
        {
            get
            {
                return DateTime.Now;
            }
        }


        public void OnPost()
        {

        }

        public void OnGet(int id = 0)
        {

        }
    }
}

<div>
Hello,
    <br />
	This is first Razor Page<span>Current datetime : @Model.Today </span> 
	<br />
    <a asp-page="./Contact/SendMail" >Contact for more info</a> 
	<br />
</div>

IndexModel_.cshtml

@page
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

@using HelloRazor.Pages
@using HelloRazor.Model

@model IndexModel
@{
    ViewData["Title"] = "Home page";

}

<div>
Hello,
    <br />
	This is first Razor Page<span>Current datetime : @Model.Today </span> 
	<br />
    <a asp-page="./Contact/SendMail" >Contact for more info</a> 
	<br />
</div>