public IActionResult OnPost(int?id)
{
if (id == null)
{
return(RedirectToPage("NotFound"));
}
if (Membership.Id == 0)
{
return(RedirectToPage("./Edit"));
}
if (Membership != null)
{
Membership = membershipData.DeleteMembership(Membership.Id);
}
membershipData.Commit();
return(RedirectToPage("./List"));
}