Develop Reference

Altering the output value of a SelectList in DropDownListFor in MVC View

I have this code inside my form:
<div class="form-group">
#Html.LabelFor(c => c.ClosingHourId)
#Html.DropDownListFor(c => c.ClosingHourId, new SelectList(Model.ClosingHours, "Id", "Time"), "Select time", new { #class = "form-control" })
#Html.ValidationMessageFor(c => c.ClosingHourId)
</div>
The "Time" property is of type DateTime, so when I click the dropdown list on my page I see full dates and times, but the thing is I want to display only the hours, without the dates, so I want to use something like Time.ToString("H:mm") but I don't know where can I write this so it will work. Maybe the right approach would be to add something like [Display(Name = Time.ToString("H:mm"))] annotation in my ClosingHour Model? I'm not sure if it's possible.
My View Model:
public class CinemaFormViewModel
{
public int? Id { get; set; }
[Required]
[StringLength(255)]
public string Name { get; set; }
[Required]
public string Address { get; set; }
[Required]
[Display(Name = "Total Seats")]
public int TotalSeats { get; set; }
public IEnumerable<OpeningHour> OpeningHours { get; set; }
[Required]
[Display(Name = "Opens At")]
public byte? OpeningHourId { get; set; }
public IEnumerable<ClosingHour> ClosingHours { get; set; }
[Required]
[Display(Name = "Closes At")]
public byte? ClosingHourId { get; set; }
}
My ClosingHour Model:
public class ClosingHour
{
public byte Id { get; set; }
[Required]
public DateTime Time { get; set; }
}
The Action inside the controller which calls the view:
public ActionResult New()
{
var openingHours = _context.OpeningHours.ToList();
var closingHours= _context.ClosingHours.ToList();
var viewModel = new CinemaFormViewModel
{
OpeningHours = openingHours,
ClosingHours = closingHours
};
return View("CinemaForm", viewModel);
}

change you by adding string time property
public class ClosingHour
{
public byte Id { get; set; }
[Required]
public DateTime Time { get; set; }
[NotMapped]
public string ShortTime { get; set; }
}
action
public ActionResult New()
{
var closingHours= _context.ClosingHours.ToList();
var openingHours = _context.OpeningHours.ToList();
closingHours.ForEach(i=> i.ShortTime=i.Time.ToShortTimeString());
openingHours.ForEach(i=> i.ShortTime=i.Time.ToShortTimeString());
// or you can try
closingHours.ForEach(i=> {
i.ShortTime=i.Time.ToShortTimeString();
i.Time=null;
});
openingHours.ForEach(i=> {
i.ShortTime=i.Time.ToShortTimeString();
i.Time=null;
});
var viewModel = new CinemaFormViewModel
{
OpeningHours = openingHours,
ClosingHours = closingHours
};
return View("CinemaForm", viewModel);
}
view
....
#Html.DropDownListFor(c => c.ClosingHourId,
new SelectList(Model.ClosingHours, "Id", "ShortTime"), "Select time", new { #class = "form-control" })
.....

Table not incrementing after an insert in asp.net mvc

I'm working on an ASP.NET MVC project. I have created the various models and the viewmodels to use in my project. I have also seeded my database table with seed data but upon implementing the registration view, I tested the form but was getting 0 as the value inserted into the Id portion of the database table. I truncated the tables and did a fresh new insert I still had same error.
Below is the model for the user table
public class User
{
[Key]
public byte Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
public string RefIndicator { get; set; }
public Team TeamCategory { get; set; }
public byte TeamId { get; set; }
public bool IsRegistered { get; set; }
public DateTime DateRegistered { get; set; }
public DateTime? LastModified { get; set; }
public UserRoles UserRoles { get; set; }
public byte UserRolesId { get; set; }
}
and below is the viewModel I created for the Team Model property I needed to use in my view
public class RegisterFormViewModel
{
public User Users { get; set; }
public byte Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
public IEnumerable<Team> Teams { get; set; }
public byte TeamId { get; set; }
public string RefIndicator { get; set; }
public bool IsRegistered { get; set; }
public DateTime DateRegistered { get; set; }
public byte UserRolesId { get; set; }
}
And here is the register action to the userController to initialize the values for the Register view
public ActionResult Register()
{
var AppUser = User.Identity.Name.Substring(5);
var AppUserEmail = AppUser + "#nlng.com";
int index = AppUser.IndexOf('.');
var FirstName = AppUser.Substring(0, index);
var LastName = AppUser.Substring(index + 1);
var IsRegistered = true;
var UserRolesId = 1;
var DateRegistered = HttpContext.Timestamp;
var teams = _context.Team.ToList();
var viewModel = new RegisterFormViewModel{
Email = AppUserEmail,
FirstName = FirstName,
LastName = LastName,
Teams = _context.Team.ToList(),
IsRegistered = IsRegistered,
UserRolesId = (byte)UserRolesId,
DateRegistered = DateRegistered
};
return View("Register", viewModel);
}
And finally here is the associated view for the registration page
#model eLeave.ViewModel.RegisterFormViewModel
#{
ViewBag.Title = "Register";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>User Registration</h2>
#using (Html.BeginForm("Save", "User"))
{
<div class="form-group">
#Html.LabelFor(r=>r.FirstName)
#Html.TextBoxFor(r => r.FirstName, new { #class = "form-control", #readonly = true })
</div>
<div class="form-group">
#Html.LabelFor(r => r.LastName)
#Html.TextBoxFor(r => r.LastName, new { #class = "form-control", #readonly = true })
</div>
<div class="form-group">
#Html.LabelFor(r => r.Email)
#Html.TextBoxFor(r => r.Email, new { #class = "form-control", #readonly = true })
</div>
<div class="form-group">
#Html.LabelFor(r => r.TeamId)
#Html.DropDownListFor(r => r.TeamId, new SelectList(Model.Teams, "Id", "TeamName"), "Select your Team", new { #class = "form-control" })
</div>
<div class="form-group">
#Html.LabelFor(r => r.RefIndicator)
#Html.TextBoxFor(r => r.RefIndicator, new { #class = "form-control" })
</div>
#Html.HiddenFor(m => m.IsRegistered)
#Html.HiddenFor(m => m.DateRegistered)
#Html.HiddenFor(m => m.UserRolesId)
#Html.HiddenFor(m => m.Id)
#Html.AntiForgeryToken()
<button class="btn btn-primary">Register</button>
}
Finally here's the save action of the userController
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Save(User user)
{
if (!ModelState.IsValid)
{
var viewModel = new RegisterFormViewModel
{
Users = user,
Teams = _context.Team.ToList()
};
return View("Register", viewModel);
}
if (user.Id == 0)
{
_context.User.Add(user);
}
else
{
var usersInDb = _context.User.Single(m => m.Id == user.Id);
usersInDb.FirstName = user.FirstName;
usersInDb.LastName = user.LastName;
usersInDb.TeamCategory = user.TeamCategory;
usersInDb.RefIndicator = user.RefIndicator;
usersInDb.UserRoles = user.UserRoles;
usersInDb.IsRegistered = user.IsRegistered;
usersInDb.Email = user.Email;
usersInDb.DateRegistered = user.DateRegistered;
}
_context.SaveChanges();
return RedirectToAction("Index", "User");
}
The Save Action basically does two things...It saves a new form and it's also used for updating data.
Would appreciate if the bugs in my code can be fished out.

Form what I understand, you need to make ID as auto incremented value.
public class User
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
public string RefIndicator { get; set; }
public Team TeamCategory { get; set; }
public byte TeamId { get; set; }
public bool IsRegistered { get; set; }
public DateTime DateRegistered { get; set; }
public DateTime? LastModified { get; set; }
public UserRoles UserRoles { get; set; }
public byte UserRolesId { get; set; }
}
I don't think it will work with byte, but you can use int for sure.
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<User>().Property(a => a.Id).HasKey(b => b.Id);
modelBuilder.Entity<User>().Property(a => a.Id).HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);
}

Set Required = false in virtual property, Entity Framework

I have an ASP.NET MVC app and I am using Entity framework.
I have a model named Propiedad and this have some virtual properties without Required attibute, in the view I have a dropdown for the virtual properties and when I do not select an option this tell me that I have to select an option.
I need that Grupo property does not need to select another option, that I can select the optionLabel without show me validator error message.
This is the model:
public class Propiedad
{
[Key]
public int Id { get; set; }
public virtual Entidad Entidad { get; set; }
public virtual PestanasPorEntidad Pestana { get; set; }
public virtual GrupoDePropiedades Grupo { get; set; }
public string Codigo { get; set; }
public string Nombre { get; set; }
public string TipoDeDatos { get; set; }
public bool Requerido { get; set; }
[Required]
public int Orden { get; set; }
public string Columna { get; set; }
}
This is part of the view (Create):
<div class="form-group">
#Html.LabelFor(model => model.Grupo, new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.DropDownListFor(m => m.Grupo.Id, (SelectList)(ViewBag.PestanaList), "Ninguno", new { #class = "form-control" })
#Html.ValidationMessageFor(model => model.Grupo)
</div>
</div>
This is part of the controller
private void SetGrupoListViewBag()
{
ViewBag.GrupoList = new SelectList(unitOfWork.GrupoDePropiedadesRepository.Get(), "id", "nombre");
}
// GET: /GlobalAdmin/Propiedades/Create
public ActionResult Create()
{
var propiedad = new Propiedad();
SetTipoDeDatosListViewBag();
SetEntidadListViewBag();
SetPestanaListViewBag();
SetColumnaListViewBag();
SetGrupoListViewBag();
var entidadId = Request["entidadId"] != null ? Convert.ToInt32(Request["entidadId"]) : -1;
if (entidadId != -1)
{
propiedad.Entidad = unitOfWork.EntidadRepository.GetById(entidadId);
return View(propiedad);
}
else
{
return View();
}
}

How to join two tables and a get list to view using viewmodel?

i have two tables called "Events" and "EventUser",
public partial class Event
{
public Event()
{
this.EventUsers = new HashSet<EventUser>();
this.Objects = new HashSet<Object>();
}
public int Id { get; set; }
public Nullable<int> CreatedBy { get; set; }
public Nullable<System.DateTime> StartTime { get; set; }
public Nullable<bool> IsShared { get; set; }
public Nullable<double> Budget { get; set; }
public virtual User User { get; set; }
public virtual ICollection<EventUser> EventUsers { get; set; }
public virtual ICollection<Object> Objects { get; set; }
}
and
public partial class EventUser
{
public Nullable<int> EventId { get; set; }
public Nullable<int> UserId { get; set; }
public bool IsAccepted { get; set; }
public int EUPK { get; set; }
public virtual Event Event { get; set; }
public virtual User User { get; set; }
}
when the parameter of UserId is passed to the action method i'm planing to display all the events that have invited to that UserId and the all other users who has invited to each of that event...
For a example if the parameter userId is 2; i want to display all the EventIds of userId 2 & for each EventId all the UserIds and other details..
I tried this & i've got some information about the events but not the list of users who have also invited for each event..
here is my action method;
public ActionResult Index(int UId)
{
ViewBag.NotCount = 1;
var result1 = from eu in db.EventUsers where eu.UserId == UId select eu;
var result2 = from eu1 in result1
join e in db.Events on eu1.EventId equals e.Id
select new MessageViewModel {
EventID1 = e.Id,
IsAccepted= eu1.IsAccepted,
CreatedBy = e.CreatedBy,
Budget = e.Budget,
};
return View(result2);
}
and my view is;
#{var counter = 1;}
#if (!Model.Any())
{
<div style="margin-left:550px;margin-top:200px">
<h2>"There are no notifications for you"</h2>
</div>
}
else {
foreach (var item in Model)
{
<div class="panel panel-info" style="width:700px;margin-left:400px">
×
<div class=" panel-heading">
<h3 class="panel-title">Notification #counter</h3>
</div>
<div class="panel-body"><p>Event #item.EventID1 is created by #item.CreatedBy .Budget of the event is #item.Budget <p>
#if (item.IsAccepted)
{
<p>You have accept the invitation!!!</p>
}
#if (!item.IsAccepted)
{
<p>You haven't accept the invitation yet!!!!</p>
}
#{counter++;}
</div>
</div>
}
and my viewmodel is;
public class MessageViewModel
{
public int EventID1 { get; set; }
public bool IsAccepted { get; set; }
public int? CreatedBy { get; set; }
public DateTime StartTime { get; set; }
public bool IsShared { get; set; }
public int ObjectID { get; set; }
public double? Budget { get; set; }
public IEnumerable<EventUser> Euser { get; set; }
// don't know if this is the
// right way to get list of userids
}
how can i overcome this problem??are there any approaches other than this if my approach is wrong??

If you're not using lazy loading, you have to specify relationships you want manually using the Include command. It's called "join" in the sql-like query syntax you're using.
You've included a join between Event and EventUser, but another join is required between EventUser and User, because User is a different entity.
I can't help you with the code, because we can't tell what the primary key on your User object is. But look at the join syntax you've already got in place, and add another join between EventUser and User, following the same format.

Cannot get data to update

Newbie Q: I have existing data painting to the Edit screen.. but cannot get it to update. I can create and list(in other code), but doing something wrong on the update. I believe I am doing something wrong in the controller.. Save button actions back to Edit screen with no changes.
Controller Code:
public class CompeditorController : Controller
{
private readonly BodyBuilderDB _db;
public CompeditorController(BodyBuilderDB db)
{
_db = db;
}
[HttpGet]
public ActionResult Edit(int CompeditorId)
{
var model = _db.Compeditors.Single(d => d.CompeditorId == CompeditorId);
return View(model);
}
[HttpPost]
public ActionResult Change(EditCompViewModel viewModel)
{
var compeditor = new Compeditor();
var bodybuilderDB = _db.Compeditors;
{
if (ModelState.IsValid)
compeditor.CompeditorId = viewModel.CompeditorId;
compeditor.FirstName = viewModel.FirstName;
compeditor.MiddleInt = viewModel.MiddleInt;
compeditor.LastName = viewModel.LastName;
compeditor.StreetAddress = viewModel.StreetAddress;
compeditor.City = viewModel.City;
compeditor.State = viewModel.State;
compeditor.PostalCode = viewModel.PostalCode;
compeditor.HomePhone = viewModel.HomePhone;
compeditor.CellPhone = viewModel.CellPhone;
compeditor.Height = viewModel.Height;
compeditor.Weight = viewModel.Weight;
compeditor.EmailAddress = viewModel.EmailAddress;
_db.Entry(bodybuilderDB).CurrentValues.SetValues(compeditor);
_db.SaveChanges();
}
End of View Code:
<div class="editor-label">
#Html.LabelFor(model => model.Weight)
</div>
<div class="editor-field">
#Html.EditorFor(model => model.Weight)
#Html.ValidationMessageFor(model => model.Weight)
</div>
<p>
<input type="submit" value="Save" />
</p>
</fieldset>
Model:
using System;
using eManager.Core;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace eManager.Web2.Models
{
public class EditCompViewModel
{
[Key]
public int CompeditorId { get; set; }
[Required]
public string FirstName { get; set; }
[Required]
public string LastName { get; set; }
public string MiddleInt { get; set; }
public string StreetAddress { get; set; }
public string City { get; set; }
public string State { get; set; }
public string PostalCode { get; set; }
public string EmailAddress { get; set; }
public string HomePhone { get; set; }
public string CellPhone { get; set; }
[Required]
public int Height { get; set; }
[Required]
public int Weight { get; set; }
}
}

Add this before your Save Changes
_db.Entry(bodybuilderDB).State = EntityState.Modified;
Remove
var compeditor = new Compeditor();
compeditor.CompeditorId = viewModel.CompeditorId;
compeditor.FirstName = viewModel.FirstName;
compeditor.MiddleInt = viewModel.MiddleInt;
compeditor.LastName = viewModel.LastName;
compeditor.StreetAddress = viewModel.StreetAddress;
compeditor.City = viewModel.City;
compeditor.State = viewModel.State;
compeditor.PostalCode = viewModel.PostalCode;
compeditor.HomePhone = viewModel.HomePhone;
compeditor.CellPhone = viewModel.CellPhone;
compeditor.Height = viewModel.Height;
compeditor.Weight = viewModel.Weight;
compeditor.EmailAddress = viewModel.EmailAddress;
And change
_db.Entry(bodybuilderDB).CurrentValues.SetValues(compeditor);
To
_db.Entry(bodybuilderDB).CurrentValues.SetValues(viewModel);