Data transfer from the database by the controller to the view ASP.NET

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C#

ASP.NET

SQL-Server

MVC

, +

Desc:

- I get information from a database using EF

var card= _ecpContext.Card.Where(sth).ToList();

- this gives me information in the List <> format

> card Count = 31

> [0] {App.Models.Card}

> [1] {App.Models.Card}

> [2] {App.Models.Card}



- I want to transfer this data from controller to view

- I am trying to do it like this:

Controller:

[HttpPost]
public async Task<ActionResult> MethodsReturnView(string previously_uploaded_data_from_ajax)
{
     // al code 
     return PartialView("_ReturnView", karta);
}

Problem:

- but it throws me an error if it adds 'card' near the returned view

> Failed to load resource: the server responded with a status of 500 (Internal Server Error)

- the error is thrown when the return command is invoked (investigated, red dot)

- without sending this data, the view returns normally

Additionally:


My model:

public partial class Karta_Model
{
    [Key]
    public int Id { get; set; }
    public int? NrDay{ get; set; }
    public int? NrMonth { get; set; }
    public int? NrYear{ get; set; }
    public string? Rozpoczecie { get; set; } 
    public string? Zakonczenie{ get; set; } 
    public string? OdbiorGodzin{ get; set; } 
    ...
}

public partial class ParentView
{
    public List<Karta_Model> Model1 { get; set; }
}

View:

using AppEcp.Models
@model ParentView

 @for (int nr_rows = 0; nr_rows < @ViewBag.daysInMonth; nr_rows++)
{
  <tr>
        <td>@Html.TextBoxFor(m => m.Model1[nr_rows].Rozpoczecie, new { @class = "start", @type = "time" })</td>
        <td>@Html.TextBoxFor(m => m.Model1[nr_rows].Zakonczenie, new { @class = "end", @type = "time" })</td>
        <td>@Html.TextBoxFor(m => m.Model1[nr_rows].OdbiorGodzin, new { @class = "gethours", @type = "time" })</td>
  </tr>
}

What I have tried:

Questions:

- Is there any other way to send this data from the controller to the view?

- What am I doing wrong here?