CODEWITHSUNDEEP
c#asp.netmodel-view-controllerrazorselectlist
Raymond
Raymond

Reputation: 115

Why SelectList returning Null value in model when submitting post?

I'm trying to submit a form using Html helper like this:

 @using (Html.BeginForm("Create", "Certificate", FormMethod.Post, new { enctype = "multipart/form-data", id = "complianceCertificate" }))

Onload of page, I'm binding the dropdown using HTML helper like this

@Html.DropDownListFor(model => model._DetailsOfOwner.Id, Model._DetailsOfOwner.Practices, "Select licensee name...", new { @class = "form-control tx-13 pd-2 has-check-valid", @name = "LicenseeId" })
                                @Html.ValidationMessageFor(model => model._DetailsOfOwner.Practices, "", new { @class = "text-danger has-error-valid" })

It loaded correctly enter image description here

The problem is when submitting the form. It passes null value in model of SelectList. enter image description here

Here is my class where select list located

public class _DetailsOfOwnerViewModel : BaseAddress
{
    public int Id { get; set; }
    public SelectList Practices { get; set; }
    public string LicenseeName { get; set; }
    public string RMLNo { get; set; }
    public string ContactPerson { get; set; }
    public string Telephone { get; set; }
    public string Email { get; set; }
}

Thank you.

Upvotes: 0

Views: 1134

Answers (3)

kartik kukadiya
kartik kukadiya

Reputation: 59

Here, You are binding a dropdown from the model object and may b that's why you take SelectList for practices property. But when you receive form data using the post method at that time you have only a single value selected in the dropdown so you need int or string for that. So there is two way to fix it:

Bind dropdown by using ViewBag, in which you will assign your list and replace

public SelectList Practices {get;set;}

to

public string Practices {get;set;}

and bind dropdown by using model._DetailsOfOwner.Practices property instead of model._DetailsOfOwner.Id.

OR another way is

You are binding the model._DetailsOfOwner.Id in the dropdown so simply you can get selected value from that property.

Upvotes: 0

Sandeep K Goyal
Sandeep K Goyal

Reputation: 280

You cant return complete SelectList you need to select a single value from dropdown that will be returned to server. You should change your model.

Switch this

public SelectList Practices { get; set; }

to this

public string Practices { get; set; }

Upvotes: 1

JustAnotherDev
JustAnotherDev

Reputation: 672

A dropdown list when an item has been chosen maps to a single value rather than a list of values so the model isn't being bound properly on submission. Try changing the type of Practicies to an int or a string.

Upvotes: 0

Related Questions