Different ways of MVC Dropdown binding

1. Static

   @Html.DropDownListFor(model => model.Gender, new SelectList(new[] { "Male", "Female" }), "--Select--")

2. Using View Data

View

  @Html.DropDownListFor(model => model.Country, new SelectList(((System.Collections.IEnumerable)ViewData["CList"]), "Value", "Text"), "—Select”)

Controller

     List<DTO> lstadto = Getlist();

  ViewData["CList"] = lstadto;

3. Using Model List

View

    @(Html.DropDownListFor(model => model.Country, new SelectList(Model.CountryList, "Value", "Text"), new { @class = "txtbox", id = "ddlcid" }))

Controller

Model dto=new model();

Dto.CountryList=getlist();

Return View(dto);

4. Using script jsonresult

Script

var URL = '@Url.Action("GetCountry")';

            $.getJSON(URL, function (data) {

                $('.ddlcountry').html(data);

            });

View

  @(Html.DropDownListFor(model => model.Country, new SelectList(Model.CountryList, "CID", "CName"), new { @class = "txtbox", id = "ddlcountry" }))

Controller

public JsonResult GetCountry()

        {

           string code = string.Empty;

            StringBuilder sb = new StringBuilder();

            List<DTO> lstadto = FillCountries();       

            foreach (var data in lstadto)

            {

                sb.Append("<option value='" + data.CID + "' >" + data.CName + " </option> ");

            }

            return Json(sb.ToString(), JsonRequestBehavior.AllowGet);

        }

5. Using script add options

Script

$('.ddlcountry').html(null);

            $('.ddlcountry').append($('<option/>', {

                value: 0,

                text: "-- Select --"

            }));

View

  @(Html.DropDownListFor(model => model.Country, new SelectList(Model.Countrylst, "CID", "CName"), new { @class = "txtbox", id = "ddlcountry" }))

6. Using script

Script

var url = '@Url.Content("../Clinic/Getdoc")';

  $.getJSON(url, { dep: 1 }, function (data) {

                $(ddltarget).empty();

                $("#doc").append("<option  value=''>Select </option>");

                $.each(data, function (index, Data) {

                    $("#doc").append("<option value='" + Data.UID + "'>" + Data.FName + "</option>");

                });

View

@Html.DropDownList("doc", Enumerable.Empty<SelectListItem>(),

    new { @style = "width: 175px;" })

Controller

public JsonResult Getdoc(int dep)

        {

            JsonResult result = new JsonResult();

            var dt = _icserv.DocList(dep);

            result.Data = dt;

            result.JsonRequestBehavior = JsonRequestBehavior.AllowGet;

            return result;

        }