Need help to complete the below code for a simple drop-down using SelectListItem in MVC

Question

4.00/5 (1 vote)

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I would like to create a simple drop-down box that displays a list of countries. The data for it comes from the database and is accessed using the entity framework data context. The user should select a country before posting the data back.(simple validation check).

I've created the view model and have also written some code, but I'm not sure about my design and I also need help to complete the code. I've done some search, but I couldn't find a simple way of doing this. Please help. Thanks

View Model - Country.cs

C#

public class Country
{   [Required]
    public int CountryId { get; set; }
    public IEnumerable<SelectListItem> Countries { get; set; }
}

Controller

C#

public ActionResult CountriesDropDown()
{
    using(ctx) 
    {
        var dropdown = (from q in ctx.Countries
                        select new Models.Country 
                         {
                           Id = q.Id,
                    //Need Code to populate the countries properties with country names from the database. 
                          }
    return view();
}

[HttpPost]
public ActionResult AddCountry(Models.Country country)
{
    using(ctx) 
    {
        }
    return view();
}

Countries View

HTML

@model Models.Country

@Html.DropDownListFor(model => model.Country..?..Need code here as well, "please select")
@Html.ValidationFor(...Need code here to make sure the user selects a country)

Posted 12-Apr-13 0:09am

devdev13

Updated 12-Apr-13 0:19am

v5

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RomilGandhi · Accepted Answer · 2013-06-28T20:52:00

You can also do it by alternate way,follow this one

C#

public class Country
{   [Required]
    public int CountryId { get; set; }
    public string CountryName {get;set:}
}

Controller

C#

public ActionResult CountriesDropDown()
{
    using(ctx) 
    {
        var dropdown = (from q in ctx.Countries
                        select new Models.Country 
                         {
                           Id = q.Id,
                           Name = q,CountryName

                    //Need Code to populate the countries properties with country names from the database. 
                          }
        Viewbag.Country = dropdown;
    return view();
}

Countries View

C#

@model Models.Country
 
@Html.DropDownListFor(model => model.CountryId,new SelectListItem{@Viewbag.Country,CountryName,CountryId}, "please select");