How to make selection (choose one of the two strings with select input in html) with Entity Framewor-CodePudding

I want to make the user only choose between two strings, Internal or Consigned, to be inserted into the InternalConsigned column of a database. How do I do that? This is my current code:

Equipment.cs model class:

    public class Equipment
    {
        [Key]
        public int Id { get; set; }

        [Required]
        [DisplayName("Equipment Name")]
        public string Name { get; set; }

        [Required]
        public int Amount { get; set; }

        [Required]
        public string Status { get; set; }

        [ForeignKey("DepartmentId")]
        public int DepartmentId { get; set; }
        public Department? Department { get; set; }

        [Required]
        public string InternalConsigned { get; set; }

        public DateTime EOLDate { get; set; }

    }

Create action method:

        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Create([Bind("Id,Name,Amount,Status,DepartmentId,InternalConsigned,EOLDate")] Equipment equipment)
        {
            if (ModelState.IsValid)
            {
                _context.Add(equipment);
                await _context.SaveChangesAsync();
                return RedirectToAction(nameof(Index));
            }
            ViewData["DepartmentId"] = new SelectList(_context.Departments, "Id", "Name", equipment.DepartmentId);
            return View(equipment);
        }

Create.cshtml:

@model Equipment

@{
    ViewData["Title"] = "Create";
}

<h4>Equipment</h4>
<hr />
<div >
    <div >
        <form asp-action="Create">
            <div asp-validation-summary="ModelOnly" ></div>
            <div >
                <label asp-for="Name" ></label>
                <input asp-for="Name"  />
                <span asp-validation-for="Name" ></span>
            </div>
            <div >
                <label asp-for="Amount" ></label>
                <input asp-for="Amount"  />
                <span asp-validation-for="Amount" ></span>
            </div>
            <div >
                <label asp-for="Status" ></label>
                <input asp-for="Status"  />
                <span asp-validation-for="Status" ></span>
            </div>
            <div >
                <label asp-for="DepartmentId" ></label>
                <select asp-for="DepartmentId" class ="form-control" asp-items="ViewBag.DepartmentId"></select>
            </div>
            <div >
                <label asp-for="InternalConsigned" ></label>
                <input asp-for="InternalConsigned"  />
                <span asp-validation-for="InternalConsigned" ></span>
            </div>
            <div >
                <label asp-for="EOLDate" ></label>
                <input asp-for="EOLDate"  />
                <span asp-validation-for="EOLDate" ></span>
            </div>
            <div >
                <input type="submit" value="Create"  />
            </div>
        </form>
    </div>
</div>

I know I have to use the select tag in the View, but I'm not sure what to write in the Controller.

CodePudding user response：

If I don't misunderstand your question, You want to write a dropdown list with two options Internal or Consigned, So you can refer to this simple demo, Hope it can help you.

            List<SelectListItem> test = new List<SelectListItem>();
            test.Add(new SelectListItem { Text = "Internal ", Value = "Internal " });
            test.Add(new SelectListItem { Text = "Consigned", Value = "Consigned" });
            ViewData["demo"] = test;

Then in the view:

<select asp-for="InternalConsigned" asp-items="@ViewBag.demo"></select>

Demo: