CODEWITHSUNDEEP
c#asp.net-mvc-3
TZHX
TZHX

Reputation: 5377

How to create a drop down list in ASP.NET MVC3?

I'm trying to create a drop down list in an ASP.NET MVC3 view based on a list of allowed values linked to the model.

So far, in my model, I've got:

namespace NS 
{
    public class Model
    {
        public Model() 
        {
            Status = new List<SelectListItem>();
            Status.Add(new SelectListItem { Text = "New", Value = "New" });
            Status.Add(new SelectListItem { Text = "PaymentPending", Value = "PaymentPending" });
            Status.Add(new SelectListItem { Text = "PaymentProcessed", Value = "PaymentProcessed" });
            Status.Add(new SelectListItem { Text = "Dispatched", Value = "Dispatched" });
            Status.Add(new SelectListItem { Text = "Complete", Value = "Complete" });
            Status.Add(new SelectListItem { Text = "Cancelled", Value = "Cancelled" });
        }

        public List<SelectListItem> Status { get; set; }
    } // class Model
} // NS

(obviously trimming unneccessary stuff out)

Then in my view I've got:

@model NS.Model
@Html.DropDownListFor(Model.Status)

As looking at answers on SO seems to suggest. But I get an error:

Compiler Error Message: CS1501: No overload for method 'DropDownListFor' takes 1 arguments

Any hints much appreciated.

Upvotes: 3

Views: 1217

Answers (2)

Rafay
Rafay

Reputation: 31033

the error message is pretty self-explanatory, the DropDownListFor helper takes two arguments.

modify your model to have a property to contain the selected value

public class Model
{
public Model() {
  Status = new List<SelectListItem>();
  Status.Add(new SelectListItem { Text = "New", Value = "New" });
  Status.Add(new SelectListItem { Text = "PaymentPending", Value = "PaymentPending" });
  Status.Add(new SelectListItem { Text = "PaymentProcessed", Value = "PaymentProcessed" });
  Status.Add(new SelectListItem { Text = "Dispatched", Value = "Dispatched" });
  Status.Add(new SelectListItem { Text = "Complete", Value = "Complete" });
  Status.Add(new SelectListItem { Text = "Cancelled", Value = "Cancelled" });
}
public List<SelectListItem> Status { get; set; }
public string SelectedVal{get;set;}
}

then in the view 

@NS.Model
@Html.DropDownListFor(x=> x.SelectedVal, x.Status)

Upvotes: 5

Keith Rousseau
Keith Rousseau

Reputation: 4475

The first parameter is the selected value of the dropdown list from the model. The second value is the list of statuses. 

@Html.DropDownListFor(x=> x.SelectedValue, Model.Status)

Upvotes: 0

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