CS0103 C# The name 'Request.Url.Scheme' does not exist in the current context code example

Example 1: CS0103 C# The name 'Request.Url.Scheme' does not exist in the current context

var _url = '@Url.Action("UploadFile", "Data", new { projectId = Model.ID }, Request.Scheme)';

Example 2: CS0103 C# The name 'Request.Url.Scheme' does not exist in the current context

@page
@model MovieData
@{
    ViewData["Title"] = Model.Title;
}