User1120430333 posted
You can do a request Request.Form and get the selected value of the Dropdownlist control.
[HttpPost]
public ActionResult Create(ProjectViewModels.Project project, string submit)
{
if (submit == "Cancel") return RedirectToAction("Index");
ValidateddlProjectTypes();
project.ProjectType = (Request.Form["ddlProjectTypes"]);
if (ModelState.IsValid && _modelHelper.IsEndDateLessThanStartDate(project, "Project"))
ModelState.AddModelError(string.Empty, "End Date cannot be less than Start Date.");
if (!ModelState.IsValid) return View(_projectModel.PopulateSelectedList(project));
_projectModel.Create(project, User.Identity.Name);
return RedirectToAction("Index");
}
You can take the second approach where the DDL points to the property in a viewmodel where the selected value is kept that can be accessible in the controller using the viewmodel.
using Microsoft.AspNetCore.Mvc.Rendering;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
namespace PublishingCompany.Models
{
public class PayRollVM
{
public class Payroll
{
public int PayrollId { get; set; }
public int AuthorId { get; set; }
public string AuthorFirstName { get; set; }
public string AuthorLastName { get; set; }
[Required(ErrorMessage = "Author is required")]
public string AuthorTypeId { get; set; }
[Required(ErrorMessage = "Salary is required")]
public int? Salary { get; set; }
public List<SelectListItem> AuthorTypes { get; set; } = new List<SelectListItem>();
}
public List<Payroll> Payrolls { get; set; } = new List<Payroll>();
}
}
@model PayRollVM.Payroll
<!DOCTYPE html>
<style type="text/css">
.editor-field > label {
float: left;
width: 150px;
}
.txtbox {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
background: white;
color: black;
cursor: text;
border-bottom: 1px solid #104A7B;
border-right: 1px solid #104A7B;
border-left: 1px solid #104A7B;
border-top: 1px solid #104A7B;
padding-top: 10px;
}
</style>
<html>
<head>
<title>Create</title>
</head>
<body>
<h1>Author Payroll</h1>
@using (Html.BeginForm())
{
@Html.ValidationSummary(false, "", new { @class = "text-danger" })
<fieldset>
<legend>Create</legend>
@Html.HiddenFor(model => model.PayrollId)
@Html.HiddenFor(model => model.AuthorId)
<div class="form-group">
<div class="editor-field">
@Html.Label("Author:")
@Html.DropDownListFor(m => m.AuthorTypeId, Model.AuthorTypes, "Select....")
</div>
</div>
<div class="form-group">
<div class="editor-field">
@Html.Label("Salary:")
@Html.TextBoxFor(model => model.Salary)
@Html.ValidationMessageFor(model => model.Salary)
</div>
</div>
<br />
<p>
<input type="submit" name="submit" value="Save" />
<input type="submit" name="submit" value="Cancel" />
</p>
</fieldset>
}
</body>
</html>
[HttpPost]
public ActionResult Create(PayRollVM.Payroll payroll, string submit)
{
if (submit == "Cancel") return RedirectToAction("Index");
if (!ModelState.IsValid) return View(pdm.PopulateSelectedList(payroll));
if (pdm.BlnFindPayRollByAuthorId(int.Parse(payroll.AuthorTypeId)))
{
ModelState.AddModelError(string.Empty, "Author has an existing PayRoll record.");
}
if (!ModelState.IsValid) return View(pdm.PopulateSelectedList(payroll));
pdm.Add(payroll);
return RedirectToAction("Index");
}
If the above controller that is using the viewmodel, one can address the AuthorTypeId. after ModelState is valid, like getting the ID and placing it in the VM property linked to a textbox and showing the view model in the view.
https://www.tutlane.com/tutorial/aspnet-mvc/how-to-use-viewmodel-in-asp-net-mvc-with-example
