Required validation not working in MVC

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the required validation not working in mvc,After creating the view ,when i click on the submit button,no response from the form

What I have tried:

using System.ComponentModel.DataAnnotations;

namespace Trial.Models
{
    public class Product
    {
        [Key]
        public int ProdID { get; set; }
        [Required]
        public string ProdName { get; set; }
        public int VendorID { get; set; }

    }
}
////////////////////////////////////////////////////
@model Trial.Models.Product
@addTagHelper*, Microsoft.AspNetCore.Mvc.TagHelpers
@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Create</title>
</head>
<body>

<h3>Are you sure you want to delete this?</h3>
<div>
    <h4>Product</h4>
    <hr />
    <dl class="row">
        <dt class = "col-sm-2">
            @Html.DisplayNameFor(model => model.ProdID)
        </dt>
        <dd class = "col-sm-10">
            @Html.DisplayFor(model => model.ProdID)
        </dd>
        <dt class = "col-sm-2">
            @Html.DisplayNameFor(model => model.ProdName)
        </dt>
        <dd class = "col-sm-10">
            @Html.DisplayFor(model => model.ProdName)
        </dd>
        <dt class = "col-sm-2">
            @Html.DisplayNameFor(model => model.VendorID)
        </dt>
        <dd class = "col-sm-10">
            @Html.DisplayFor(model => model.VendorID)
        </dd>

    </dl>
    
    <form asp-action="Create">
        <input type="submit" value="Delete" class="btn btn-danger" /> |
        <a asp-action="Index">Back to List</a>
    </form>
</div>
</body>
</html>
////////////////////////////////////////////////////////////////

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddControllersWithViews();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Home/Error");
}
app.UseStaticFiles();

app.UseRouting();

app.UseAuthorization();

app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Prod}/{action=Index}/{id?}");

app.Run();
//////////////////////////////////////////////////////////////
using Microsoft.AspNetCore.Mvc;
using Trial.Models;

namespace Trial.Controllers
{
    public class ProdController : Controller
    {
        public IActionResult Index()
        {
            return View();
        }
        [HttpPost]
        public IActionResult Create()
        {
            if (ModelState.IsValid)
            {
                // do something
                return RedirectToPage("index");
                // return RedirectToAction("Index");
            }
            else
            {
                return View();
            }


           
        }

             
              
    }
}

please help

Posted 24-Apr-24 11:23am

Member 11307750

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Pete O'Hanlon · Answer 1 · 2024-04-24T22:01:00

Solution 1

Try changing your Required annotation to Required(AllowEmptyStrings=false) to take care of situations where the string is an empty string.

Posted 24-Apr-24 22:01pm

Pete O'Hanlon

Comments

Member 11307750 25-Apr-24 6:42am

It did not work

Richard Deeming · Answer 2 · 2024-04-30T02:17:00

Solution 2

Validation applies to inputs within a form. You do not have any inputs within your form; instead, you are using Html.DisplayFor to display the values outside of the form.

It's also very odd that you have a button that says Delete posting an empty form to an action called Create.

Posted 3 days ago

Richard Deeming