[c#] How to write a simple Html.DropDownListFor()?

In ASP.NET MVC 2, I'd like to write a very simple dropdown list which gives static options. For example I'd like to provide choices between "Red", "Blue", and "Green".

This question is related to c# asp.net asp.net-mvc-2 html.dropdownlistfor

The answer is


With "Please select one Item"

@Html.DropDownListFor(model => model.ContentManagement_Send_Section,
  new List<SelectListItem> { new SelectListItem { Value = "0", Text = "Plese Select one Item" } }
    .Concat(db.NameOfPaperSections.Select(x => new SelectListItem { Text = x.NameOfPaperSection, Value = x.PaperSectionID.ToString() })),
  new { @class = "myselect" })  

Derived from the codes: Master Programmer && Joel Wahlund ;
King Reference : https://stackoverflow.com/a/1528193/1395101 JaredPar ;

Thanks Master Programmer && Joel Wahlund && JaredPar ;

Good luck friends.


Or if it's from a database context you can use

@Html.DropDownListFor(model => model.MyOption, db.MyOptions.Select(x => new SelectListItem { Text = x.Name, Value = x.Id.ToString() }))

Hi here is how i did it in one Project :

     @Html.DropDownListFor(model => model.MyOption,                
                  new List<SelectListItem> { 
                       new SelectListItem { Value = "0" , Text = "Option A" },
                       new SelectListItem { Value = "1" , Text = "Option B" },
                       new SelectListItem { Value = "2" , Text = "Option C" }
                    },
                  new { @class="myselect"})

I hope it helps Somebody. Thanks


<%: 
     Html.DropDownListFor(
           model => model.Color, 
           new SelectList(
                  new List<Object>{ 
                       new { value = 0 , text = "Red"  },
                       new { value = 1 , text = "Blue" },
                       new { value = 2 , text = "Green"}
                    },
                  "value",
                  "text",
                   Model.Color
           )
        )
%>

or you can write no classes, put something like this directly to the view.


@using (Html.BeginForm()) {
    <p>Do you like pizza?
        @Html.DropDownListFor(x => x.likesPizza, new[] {
            new SelectListItem() {Text = "Yes", Value = bool.TrueString},
            new SelectListItem() {Text = "No", Value = bool.FalseString}
        }, "Choose an option") 
    </p>
    <input type = "submit" value = "Submit my answer" />
} 

I think this answer is similar to Berat's, in that you put all the code for your DropDownList directly in the view. But I think this is an efficient way of creating a y/n (boolean) drop down list, so I wanted to share it.

Some notes for beginners:

  • Don't worry about what 'x' is called - it is created here, for the first time, and doesn't link to anything else anywhere else in the MVC app, so you can call it what you want - 'x', 'model', 'm' etc.
  • The placeholder that users will see in the dropdown list is "Choose an option", so you can change this if you want.
  • There's a bit of text preceding the drop down which says "Do you like pizza?"
  • This should be complete text for a form, including a submit button, I think

Hope this helps someone,


Avoid of lot of fat fingering by starting with a Dictionary in the Model

namespace EzPL8.Models
{
    public class MyEggs
    {
        public Dictionary<int, string> Egg { get; set; }

        public MyEggs()
        {
            Egg = new Dictionary<int, string>()
            {
                { 0, "No Preference"},
                { 1, "I hate eggs"},
                { 2, "Over Easy"},
                { 3, "Sunny Side Up"},
                { 4, "Scrambled"},
                { 5, "Hard Boiled"},
                { 6, "Eggs Benedict"}
            };

    }


    }

In the View convert it to a list for display

@Html.DropDownListFor(m => m.Egg.Keys,
                         new SelectList(
                             Model.Egg, 
                             "Key", 
                             "Value"))

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