MVC pass data from not strongly typed view to controller

Question

I am trying to learn MVC and have been stuck on this for quite some time, all the tutorial online uses strongly typed view but my view isn't strongly typed,

@using (Html.BeginForm("addInventory", "AdminController", FormMethod.Post))
{
    <div class="form-style-2-heading">Add New Inventory</div>
    <label>
        <span>No <span class="required">*</span></span>@Html.TextBox("no", null, new { id = "no", Class = "input-field" })
    </label>
    <label>
        <span>Name <span class="required">*</span></span>@Html.TextBox("name", null, new { id = "name", Class = "input-field" })
    </label>
    <label>
        <span>Primary Type <span class="required">*</span></span>@Html.DropDownList("typeList", ViewBag.typeList as SelectList, new { id = "primarytype", Class = "select-field" })
    </label>
    <label>
        <span>Secondary Type <span class="required">*</span></span>@Html.DropDownList("typeList", ViewBag.typeList as SelectList, new { id = "secondarytype", Class = "select-field"})
    </label>

    <label><span>&nbsp;</span><input type="submit" value="Submit" /></label>
}

So I successfully binded my dropdown list with data from the controller but I can't seem to do it the other way round

Edit:

Model:

public class inventoryModel
{
    public int no { get; set; }
    public string name { get; set; }
    public int primaryType { get; set; }
    public int secondaryType { get; set; }
}

Controller:

private ActionResult addInventory()
{

   return View();
}

Answer 1

Your error is here:

<label>
    <span>Primary Type <span class="required">*</span></span>
    @Html.DropDownList("primaryType", (IEnumerable<SelectListItem>)ViewBag.typeList, new { @class = "select-field" })
</label>
<label>
    <span>Secondary Type <span class="required">*</span></span>
    @Html.DropDownList("secondaryType", (IEnumerable<SelectListItem>)ViewBag.typeList, new { @class = "select-field"})
</label>

Don't use id in htmlAttributes 1st helper parameter is used for tag id and name on POST value of tag will bind to your model property by name .

Also note that I escape class name with @ symbol.

On POST here what your controller signature should be:

[HttpPost]
private ActionResult addInventory(inventoryModel model)
{
   var data = model.secondaryType; //here you can get your posted data
   return View();
}