Get Drop Down Value

Hello Every One i have use this code for get value in drop down list .But i have face issue.This is my code

public IEnumerable GetPlanList()
{
var PlanList = _context.PlanMaster.OrderByDescending(x => x.PlanId)
.Select(x => new SelectListItem()
{
Text = x.PlanName,
Value = x.PlanId.ToString()
}).ToList(); --- it's me c# code
return PlanList;

This is my script

$(document).ready(function () {
debugger;
$("#DropDown").change(function () {
$.get("/AddCoupan/GetPlanList", { PlanId: $("#DropDown").val() }, function (data) {
$.each(data, function (index, row) {
$("#DropDown").append(" + row.planId + "'>" + row.planName + "")
});
});
})
});

@Html.DropDownListFor(x=>x.PlanId, Model.PlanMaster,"--Select Plan--",new { @class = "form-control", @id = "DropDown", @required = "required" })--But Here I have Face Issue object reference not set to an instance of an object

It's view model class

public int PlanId { get; set; }
public IEnumerable PlanMaster { get; set; }
public string PlanName { get; set; }

2 Replies

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Sachin Singh5y ago
Accepted answer
use simple one
@Html.DropDownListFor(M => M.MobileList, new SelectList(Model.MobileList,"Value", "Text"))

public class Mobiledata
    {
        [Key]
        public int MobileID { get; set; }
        public string MobileName { get; set; }
        public string MobileIMEno { get; set; }
        public string MobileManufactured { get; set; }
        public Nullable Mobileprice { get; set; }
        [NotMapped]
        public SelectList MobileList { get; set; }

    }
// in action

MD.MobileList = new SelectList(MCon.GetMobileList(), "MobileID", "MobileName");
Mageshwaran R5y ago
Hi Sourabh,
This code is working:

Models:
public class Vechiles
{
    public string Name { get; set; }
    public long ID{ get; set; }
    public long VechileId { get; set; }

}
Methods:
public List getVechiles()
{
List vechile= new List
{
    new Vechiles{ Name = "Car", ID= "1},
    new Vechiles{ Name = "Bike", ID= 2 },
};
return vechile
}
public List GetVechiles()
        {
            List listItems = new List();
            List vechiles= getVechiles()

            if (vechiles.Count != 1 && emptyRow)
            {
                listItems.Add(new SelectListItem()
                {
                    Text = "",
                    Value = "0"
                });
            }

            foreach (Vechiles vechile in vechiles)
            {
                listItems.Add(new SelectListItem()
                {
                    Text = vechile.Name,
                    Value = vechile.ID.ToString()
                });
            }

            return listItems;
        }
Controller:
List vechiles= GetVechiles();
ViewBag.Vechiles = vechiles;
View:
@Html.DropDownListFor(x => x.VechileId, new SelectList(ViewBag.Vechiles, "Value", "Text"), new { @class = "form-control select2bs4", style = "width: 200px" })