ASP.NET MVC Dynamic Model not being recognized

Question

I am trying to use 2 models in 1 view in an ASP.NET MVC application and am trying to use the dynamic model approach as described here: https://www.c-sharpcorner.com/UploadFile/ff2f08/multiple-models-in-single-view-in-mvc/

This is my controller:

Details controller

    // GET: Statewides/Details/5
        public ActionResult Details(int? id)
        {
            ViewBag.ID = id;
            var today = DateTime.Today;
            var todayAsString = today.ToString("MM/dd/yyyy");
            ViewBag.Today = todayAsString;
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }

            Statewide statewide = db.Statewides.Find(id);

            var document = from s in db.Documents
                           where s.Statewide_ID == id
                           select s;

            dynamic mymodel = new ExpandoObject();
            mymodel.Statewides = statewide;
            mymodel.Documents = document;

            if (statewide == null)
            {
                return HttpNotFound();
            }
            return View(mymodel);
        }

And this is a part of my view:

@model  dynamic

@{
    ViewBag.Title = "Details";
}

  
            
                COUNTY: @Model.Statewide.COUNTY
            
            
                District:@Model.Statewide.District

And at the bottom of that page I need to access the Documents model:

       
            @foreach (Document document in Model.Documents)
            {
                
            }
        
            
                Doc Type
                Order Date
                Location
            

                    @document.Doc_Type
                    @document.Order_Date
                    @document.Doc_Location

Here I get an error on Document saying "The type or namespace Document could not be found". I'm not exactly sure what I'm doing wrong as it looks to me like I've done the same thing as the guide.

Here is the full view if you need it, PLEASE NOTE I have not changed a lot of the instances of the retrieving values from the old model that was only Statewide. Please ignore those:

@model  dynamic







@{
    ViewBag.Title = "Details";
}


    
        
            DETAIL RECORD - RP ROADWAY HISTORY FILE
            
                
                    
                
                
                    
                        Current Date:
                        
                    
                
            
        
        
            
                COUNTY: @Model.Statewide.COUNTY
            
            
                District:@Model.Statewide.District
            
        
        
            
                Route No:@Html.DisplayFor(model => model.RouteNo)
            
            
                Sign System:@Html.DisplayFor(model => model.SignSys)
            
            
        
        
            
                LocalName:
            
        
        
            
                @Html.DisplayFor(model => model.LocalName)
            
            
        
        
            
                Supp Des:
            
            
                @Html.DisplayFor(model => model.SuppDes)
            
            
                Method:
            
            
                @Html.DisplayFor(model => model.Method)
            
            
            
                @Html.DisplayFor(model => model.Duplicate_OK)
                Duplicate OK
            
        
        
            
                Date:
            
            
                @Html.DisplayFor(model => model.ReservedDate)
            
            
                Original Location:
            
            
                @Html.DisplayFor(model => model.OriginalL)
            
        
        
            
            
                Original D:
            
            
                @Html.DisplayFor(model => model.OriginalD)
            
        
        
            DOCUMENTS
        

        
            @foreach (Document document in Model.Documents)
            {
                
            }
        
            
                Doc Type
                Order Date
                Location
            

                    @document.Doc_Type
                    @document.Order_Date
                    @document.Doc_Location
                


        
            PROJECTS
        
        @Html.DisplayFor(model => model.Projects)
        
            COMMENTS
        
        @Html.DisplayFor(model => model.Comments)
    

    
        @Html.ActionLink("Back to List", "Index")

Serge suggested I use view model so I have tried this:

ViewModel

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Roadway_History.Models
{
    public class ViewModel
    {
        public Statewide Statwide { get; set; }
        public Document Document { get; set; }
    }
}

Action

// GET: Statewides/Details/5
        public ActionResult Details(int? id)
        {
            ViewBag.ID = id;
            var today = DateTime.Today;
            var todayAsString = today.ToString("MM/dd/yyyy");
            ViewBag.Today = todayAsString;
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }

            var model = new ViewModel
            {


            Statewide statewide = db.Statewides.Find(id);

            var document = from s in db.Documents
                           where s.Statewide_ID == id
                           select s;
            };
            

            if (statewide == null)
            {
                return HttpNotFound();
            }
            return View(model);
        }

But this also doesn't work. I get the errors

Statewide is a type which is not valid in the given contextand ViewModel does not contain a definition for statewide

I belive the action method to be wrong but I'm not sure how to fix it.

Also, using @model ViewModel in the view gives the error "The type or namespace ViewModel could not be found"

Serge · Accepted Answer

if you need to use two models for one view you can make a viewmodel that contains both of them

public class ViewModel 
{
 public  Statewide Statwide {get; set;}
 public  List Documents {get; set;}

}

in the view

@model ViewModel

action

var model = new ViewModel
{
   Statewide= ... your code
   Document=... your code
};
......
return View(model);

UPDATE

fix your viewmodel like this

 var statewide = db.Statewides.FirstOrDefault (i=> i.Id==id);
 if (statewide == null)
            {
                return HttpNotFound();
            }
 var documents = db.Documents.Where(s=> s.Statewide_ID == id).ToList();

            if (documents == null)
            {
                return HttpNotFound();
            }
          
var model = new ViewModel
            {
            Statewide =statewide, 
            Documents = documents
            };

  return View(model);

but you will need to fix model too according to new viewmodel

ASP.NET MVC Dynamic Model not being recognized

Details controller

ViewModel

Action

Answers (1)

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