CODEWITHSUNDEEP
.netmodel-view-controllerrazor
DJPB
DJPB

Reputation: 5789

MVC DropDown for model inside ViewModel

Im working on an MVC application and for my current form I have a ViewModel like

public class MyViewModel
    {

        public MyModel MyModel { get; set; }
        ...

and MyModel has a type

public class MyModel 
    {

        public int MyModelTypeId { get; set; }
        ...

Now, i need a DropDownList to popuulate MyModelTypeId,

this is what I Have in the View:

@Html.DropDownList("MyModelTypeId", String.Empty)

and in the Controller:

ViewBag.MyModelTypeId = new SelectList(db.MyModelTypes, "MyModelTypeId", "MyModelTypeName", model.MyModel.MyModelTypeId);

Now, the drop down is being populated well but, on post, the picked value is not being binded to 'MyModel'

What am I doing wrong

Upvotes: 2

Views: 615

Answers (1)

Electric Sheep
Electric Sheep

Reputation: 4320

The dropdown list is being bound to the MyModelTypeId property you have created in the ViewBag, not the MyModelTypeId property of the `MyModel' class.

You should store the select list in MyModel

public class MyModel 
{
    public int MyModelTypeId { get; set; }
    public IEnumerable<SelectListItem> MyModelTypes { get; set; }

Assign the select list you create in your controller to this property, and then render the dropdown list in your view, passing the MyModelTypeId as the value to bind the selected item to, and MyModelTypes as the select list to use:

@Html.DropDownListFor(m => m.MyModel.MyModelTypeId, Model.MyModel.MyModelTypes)

When the form is submitted, the selected value will be bound to MyModel.MyModelTypeId

Upvotes: 2

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