I'm using a html.beginform to when i click in a button i go to a diferente Action, but i need to pass the values that i have inside my model aspnet c#

Question

I'm developng a school project using a html.beginform to when i click in a button i go to a diferent Action, but i need to pass the values that i have inside my @model in the view to the action.How can I do that?

@using (Html.BeginForm("ExportToexcel_Click", "L_AccessPoint", FormMethod.Post))
{
    <button type="submit" id="cmdAction" runat="server">
        Export To Excel
    </button>
}

Inside that action i will create a file, and to do that i need to pass the model that i have in the view to the action ExportToexcel_Click

[HttpPost]
        public ActionResult ExportToexcel_Click(dadosPassar dp)
        {

            var ds = new dadosPassar();
            ds = dp;

            return RedirectToAction("Index",ds);

        }

And thats my model,

    public class dadosPassar
    {
        public List<Stored1>? dados2 { get; set; }
        public List<L_AccessPoint>? Aps { get; set; } = new List<L_AccessPoint>();
        public List<L_Zone>? Zones { get; set; } = new List<L_Zone>();
        public List<int>? ap { get; set; } 
        public DateTime Inicial { get; set; }
        public DateTime Final { get; set; }
        public string? AcessoVisita { get; set; }
        public string? tempo { get; set; }
        public string ApZona { get; set; }
    }

Edit: I need to pass my model.dados2 to my view to i can work with that, how can i do that?

Thats my dados2 structure

    public class Stored1
    {
        public short ap_id { get; set; }
        public string ap_name { get; set; }
        public int numeroAcessos { get; set; }
        //public int month { get; set; }
        public int year { get; set; }
        public int MES { get; set; }
        public int DIA { get; set; }

    }

Answer 1

"I'm using a html.beginform to when I click in a button I go to a diferente Action?"

Yes this is very obvious it should redirect to your controller as per your code. Because <button type="submit" runat="server"> Export To Excel </button> is not correct way to do that. You should try below way.

Correct Way:

 <input type="submit" id="cmdAction" value="Export To Excel"/>

Output:

"But I need to pass the values that I have inside my model aspnet c#"

It seems that you are sending nothing inside your BeginForm submit action as shown below.

@using (Html.BeginForm("ExportToexcel_Click", "L_AccessPoint", FormMethod.Post))
{
    <input type="submit" d="cmdAction" value="Export To Excel"/>
}

Note: Above code will submit null value to your ExportToexcel_Click controller as you are not sending anything inside the form post action.

Demo:

Tough Its not clear what your plan is. But if you would like to load this page with some predefined data in that case, you should initialize the model in your controller Index action then load the value in hidden mode like below:

Controller Action For Intial View:

public IActionResult Index()
        {
            var ds = new dadosPassar();
            ds.AcessoVisita = "Initial AcessoVisita";
            ds.tempo = "Initial Tempo";
            ds.ApZona = "Initial Ap Zona";
            ds.Final = DateTime.Now;
            return View(ds);
        }

View:

@model DotNet6MVCWebApp.Models.dadosPassar 

@using (Html.BeginForm("ExportToexcel_Click", "L_AccessPoint", FormMethod.Post))
{
    <input asp-for="AcessoVisita" hidden class="form-control" />
    <input asp-for="tempo" hidden class="form-control" />
    <input asp-for="ApZona" hidden class="form-control" />
    <input type="submit" d="cmdAction" value="Export To Excel"/>
}

Controller When Submit Button Cliked:

        [HttpPost]
        public ActionResult ExportToexcel_Click(dadosPassar dp)
        {

            var ds = new dadosPassar();
            ds = dp;

            return RedirectToAction("Index", ds);

        }

Output:

Hope that would resolve your current issue and guide you to pass values to your controller POST method.