"ASP.NET MVC Post 模型项为空"

Question

I have an edit view that I want to only allow certain fields to be edited and updated. My issue, for appearance reasons I want the non editable field to be text only without a textbox around them.

public ActionResult CreateExisting(int id)
{
    var LO = db.LOes.Find(id);
    return View(LO);
}

[HttpPost]
public ActionResult CreateExisting(int id, LO lo)
{
    try
    {
        db.Entry(lo).State = System.Data.Entity.EntityState.Modified;
        db.SaveChanges();
    
        return RedirectToAction("Index", "LO");
    }
    catch
    {
        return RedirectToAction("Error", new { id = id });
    }
}

Answer 1

try to add html.hiddenfor

 @using (Html.BeginForm("CreateExisting", "..your controller", FormMethod.Post)) 
 {
 @Html.AntiForgeryToken()

@Html.HiddenFor(model=> model.ID);


 <table style="width:800px">
 <tr>
   <td>
         @Html.DisplayFor(model => model.Customer)
    </td>
     <td>
           @Html.TextBoxFor(model => model.Address)
      </td>
 </tr>
 </table>