ASP.NET Core Razor Page OnPost with parameter

Question

I have a Razor page which OnGet receive a parameter from another page and load the data. The OnGet looks like below

public async Task<IActionResult> OnGetPTWNoIdAsync(int ptwNoId)
{
    some code here
}

OnPost looks like below

public async Task<IActionResult> OnPostHazIdAsync()
{
    if (!ModelState.IsValid)
    {
        return Page();
    }

    var newHazId = new HazId();
    if (await TryUpdateModelAsync(newHazId, "HazId",
        c => c.PTWNo,
        c => c.HazClass,
        c => c.HazDetails,
        c => c.HazPMClass,
        c => c.HazPMDetails
        ))
       {
           _context.HazIds.Add(newHazId);
           await _context.SaveChangesAsync();
           return RedirectToPage(new { ptwNoId = newHazId.PTWNo });
       }

       if (newHazId == null)
       {
           return NotFound();
        }
        return RedirectToPage( new { ptwNoId = newHazId.PTWNo });
}

However, after OnPost there is no data loaded. Can you help?