DropDownList SelectedItem不起作用（Razor ASP MVC5）

Question

Model

public class MyModel {
     public string ItemXYZ { get; set; }
}

Controller

public ActionResult Edit(int? id)
{
  var x = db.XYZs.Find(id);
  ViewBag.Item_XYZ = new SelectList(new[] { "X", "Y", "Z"}, x.CurrentXYZ);
}

View

@Html.DropDownList("XYZ123", @ViewBag.Item_XYZ as SelectList, new { @class = "special-class" })

Problem

If I change my DropDownList to mach the name of the get set in my model, the selected value does not work.

@Html.DropDownList("ItemXYZ" ....)

If it matches the name of my ViewBag item, the SelectedItem doesn't work.

@Html.DropDownList("Item_XYZ" ....)

But, if I append 123 (for example), SelectedItem works just fine.

UPDATE

This is the same issue I am having, but I don't understand why or how to handle the return in my controller?

Answer 1

In Controller use the code as::

public ActionResult Edit(int? id)
{
  var x = db.XYZs.ToList();
  ViewBag.TestDropdown = new SelectList(x, "ValueField", "TextField", "DefaultSelected");
}

and in Client side to show Dropdown use this:

@Html.DropDownList("TestDropdown")

thats it. May be this will help you.

Answer 2

Receive a parameter named XYZ123 in respective action. Also include XYZ123 in Bind attribute of action.