A.
@using(Html.BeginForm("Edit","Admin",FormMethod.Post, new { enctype = "multipart/form-data" })){ }
B.
@Html.BeginForm("Edit","Admin",FormMethod.Post, new { enctype = "multipart/form-data" }){ }
C.
@using(Html.BeginForm("Edit","Admin")){ }
D.
@Html.BeginForm("Edit","Admin"){ }