Question

I’m making Memo web application.

and the main page contain ‘Create and List and Modify’ functions.

But I don’t know how to pass Model (for create) and List (for List) to View(Razor) from controller.

this is my note model,

[Table("note")]
public class Note
{
        [Key]
        public int id { get; set; }
        
        [Required(ErrorMessage="Content is required")]
        [DisplayName("Note")]
        public string content { get; set; }
        public DateTime date { get; set; }

        [Required(ErrorMessage = "User ID is required")]
        [DisplayName("User ID")]
        public string userId {get; set;}
        public Boolean isPrivate { get; set; }
        public virtual ICollection<AttachedFile> AttachedFiles { get; set; }

}

I tried,

1)

public ActionResult Index()
{
     var notes = unitOfWork.NoteRepository.GetNotes();
     return View(notes); 
}

Then, in view,

@model Enumerable<MemoBoard.Models.Note>
//I can not use this, because the model is Enumerable type
@Html.LabelFor(model => model.userId)

So, I made viewModel

2)

public class NoteViewModel
{
    public IEnumerable<Note> noteList { get; set; }
    public Note note { get; set; }
}

In Controller,

public ActionResult Index()
{
    var notes = unitOfWork.NoteRepository.GetNotes();
    return View(new NoteViewModel(){noteList=notes.ToList(), note = new Note()});
}

and In View,

@model MemoBoard.Models.NoteViewModel
@Html.LabelFor(model => model.note.userId) 

it looks well, BUT in source view, it’s showing

<input data-val="true" data-val-required="User ID is required" id="note_userId" name="note.userId" type="text" value="" />

the name is note.userId not userId.

List this case, how should I do to make working?

Please advice me.

Thanks

[EDIT]
(First of all, thanks for all advices)

Then, How can I change this controller

[HttpPost]
public ActionResult Index(Note note) 
{
    try
    {
    if (ModelState.IsValid)
    {
        unitOfWork.NoteRepository.InsertNote(note);
        unitOfWork.Save();
        return RedirectToAction("Index");
    }
    }catch(DataException){
    ModelState.AddModelError("", "Unable to save changes. Try again please");
    }

    return RedirectToAction("Index");
}

If I change parameter type to NoteViewModel, then how should I do for valid check?

[HttpPost]
public ActionResult Index(NoteViewModel data) 
{
    try
    {
    if (ModelState.IsValid) <===

Answer 1

@model Enumerable<MemoBoard.Models.Note> 
//I can not use this, because the model is Enumerable type 
@Html.LabelFor(model => model.userId) 

You can use it in foreach loop or return list and use it in for loop

the name is note.userId not userId.

It’s normal, this made for model binding

Try this:

Html.TextBox("userId", Model.note.userId, att)