How to autopopulate fields from razor view page

Question

I have already created a view that displays data in a razor page (5 columns)

studentFirstName,  StudentLastName, StudentId,  CourseId, Grade

It also displays a button (instead of default Edit link) in each row

@Html.ActionLink("Grade", "Courses", "Students", null, new { @class = "btn btn-success" })

What I would like to do is when the button is clicked, it will navigate to new view (newPage) where a form is displayed (two fields, save button) and gets auto-populated according to the row it was click. What I have done

1. Added IActionResult

   [HttpGet]
   public IActionResult Courses(long id)
   {
       // get the courses from the collection
       var Cor = Courselist.Where(c=>c.CourseId == id).FirstOrDefault();
       return View(Cor);
   }
   

2. The razor page looks like this (two fields to auto populate CourseId and Grade)

   @using (Html.BeginForm())
   {
       @Html.AntiForgeryToken()
   
       <div class="form-horizontal">
           <h4>Update Clinical Status</h4>
           <hr />
           @Html.ValidationSummary(true, "", new { @class = "text-danger" })
           @Html.HiddenFor(model => model.CourseId)
   
           <div class="form-group">
               @Html.LabelFor(model => model.CourseId, htmlAttributes: new { @class = "control-label col-md-2" })
               <div class="col-md-10">
                   @Html.EditorFor(model => model.CourseId, new { htmlAttributes = new { @class = "form-control" } })
                   @Html.ValidationMessageFor(model => model.CourseId, "", new { @class = "text-danger" })
               </div>
           </div>
   
           <div class="form-group">
               @Html.LabelFor(model => model.Grade, htmlAttributes: new { @class = "control-label col-md-2" })
               <div class="col-md-10">
                   @Html.EditorFor(model => model.Grade, new { htmlAttributes = new { @class = "form-control" } })
                   @Html.ValidationMessageFor(model => model.Grade, "", new { @class = "text-danger" })
               </div>
           </div>
   
           <div class="form-group">
               <div class="col-md-offset-2 col-md-10">
                   <input type="submit" value="Save" class="btn btn-default" />
               </div>
           </div>
       </div>
   }
   

I get the labels and the text fields but not the data (CourseId, Grade) from that row, any idea where I went wrong?