EDIT: I am trying to add a comment to a post in my mvc application but my action does not seem to work. When I reach the Action I want to pass on an Id from a Post (the Id from the table/model FormalBlog) but the newPost.Post = model.Post is null and when the action reaches the db.SaveChanges it throws an System.Data.Entity.Validation.DbEntityValidationException.
Below is my action and my PostIndexViewModel:
public ActionResult Comment(PostIndexViewModel model, FormalBlog Post)
{
var userName = User.Identity.Name;
var author = db.Users.SingleOrDefault(x => x.UserName == userName);
Comment newPost = new Comment();
newPost.Author = author;
newPost.Text = model.Text;
newPost.Post = model.Post;
db.Comments.Add(newPost);
db.SaveChanges();
return RedirectToAction("ShowBlogs", "Blog");
}
}
public class PostIndexViewModel
{
public string Id { get; set; }
public ICollection<FormalBlog> FormalBlogs { get; set; }
public FormalBlog NewFormalBlog { get; set; } = new FormalBlog();
public Category NewCategory { get; set; } = new Category();
public ICollection<Category> Categories { get; set; }
public List<SelectListItem> SelectedCategories { get; set; }
public int[] CategoryIds { get; set; }
public Category CategoryN { get; set; }
public ICollection<Meeting> Meetings { get; set; } //testrad
// public int Id { get; set; }
public string Text { get; set; }
public ApplicationUser Author { get; set; }
public Comment NewComment { get; set; }
public FormalBlog Post { get; set; }
}
and here is the code for my view:
#model XP_Scrum_Grupp2.Controllers.PostIndexViewModel
#using (Html.BeginForm("Comment", "Blog", new { formal = Model }, FormMethod.Post, new { id = Model.Id }))
{
<div class="comment-form-container">
<form class="comment-form" data-action="#Url.Action("Comment", "Blog")">
#Html.HiddenFor(m => m.Id)
<div>#Html.DisplayFor(m => m.Author)</div>
<div>
<div>#Html.LabelFor(m => m.Text)</div>
#Html.TextAreaFor(m => m.Text, new { Class = "comment-text", rows = "3", cols = "50" })
</div>
<div class="comment-result" style="display: none;">
<span class="comment-result-text">An error occurred</span>
</div>
<div>
<button type="submit" class="comment-form-submit">Submit comment</button>
</div>
</form>
</div>
}
Your view does not assign any value to model.NewComment. So when you access model.NewComment.Text it will throw Null reference exception since model.NewComment is null.
You assign new text to model's Test property. So you should use model.Text instead of model.NewComment.Text
public ActionResult Comment(PostIndexViewModel model)
{
var userName = User.Identity.Name;
var author = db.Users.SingleOrDefault(x => x.UserName == userName);
Comment newPost = new Comment();
newPost.Author = author;
newPost.Text = model.Text;
newPost.Post = model.Post;
db.Comments.Add(newPost);
db.SaveChanges();
return RedirectToAction("ShowBlogs", "Blog");
}
You are not posting the any data as model.NewComment.Text so the error occures because of NewComment object is null.
#Html.TextAreaFor(m => m.Text, new { Class = "comment-text", rows = "3", cols = "50" })
So, try to change it;
newPost.Text = model.NewComment.Text;
to
newPost.Text = model.Text;
Related
I am developing a simple website where there are students and there are courses. What is interesting is I can't seem to add a course to my student and make it save. I call the savechanges() method but on my cshtml page, my viewbag does not contain the updated student. Here is what I mean.
Here you can see my ViewBag.Student contains a valid student that has been modified to include two courses under PendingCourses. However, when I load my cshtml page, my ViewBag.Student contains:
So there is definitely some disconnect although I can't figure out what it is. So basically my Details page sets the ViewBag by doing a where statement on the context. This context is modified and saved with the AddCourseToStudent function and then the ViewBag.Student is read in the cshtml. Any help is much appreciated. Below are my files for reference.
Details Function:
// GET: Student/Details/5
[Authorize]
public ActionResult Details(int id)
{
using (var context = new StudentDbContext())
{
ViewBag.Student = context.Students.Where(u => u.id == id).FirstOrDefault();
}
var context2 = new ApplicationDbContext();
var userList = context2.Users.OrderBy(r => r.UserName).ToList().Select(rr => new SelectListItem { Value = rr.UserName.ToString(), Text = rr.UserName }).ToList();
ViewBag.Users = userList;
return View();
}
CSHTML:
#{
ViewBag.Title = "Details";
Layout = "~/Views/Shared/_Layout.cshtml";
SchoolRegistration.Models.Student student = ViewBag.Student;
List<SchoolRegistration.Models.Course> completedCourses = student.CompletedCourses;
List<SchoolRegistration.Models.Course> pendingCourses = student.PendingCourses;
List<SchoolRegistration.Models.Course> failedCourses = student.FailedCourses;
List<int> yearRange = new List<int>();
if (completedCourses != null) {
foreach (SchoolRegistration.Models.Course course in completedCourses)
{
if (!yearRange.Contains(course.Year))
{
yearRange.Add(course.Year);
}
}
}
if (pendingCourses != null)
{
foreach (SchoolRegistration.Models.Course course in pendingCourses)
{
if (!yearRange.Contains(course.Year))
{
yearRange.Add(course.Year);
}
}
}
if (failedCourses != null)
{
foreach (SchoolRegistration.Models.Course course in failedCourses)
{
if (!yearRange.Contains(course.Year))
{
yearRange.Add(course.Year);
}
}
}
yearRange.Sort();
}
<h2>Details</h2>
#if (TempData["Success"] != null)
{
if (TempData["Success"] == "nocourse")
{
<div style="background-color:aliceblue">
<p><strong>Success:</strong>Create Course?</p>
</div>
}
else
{
<div style="background-color:aliceblue">
<p><strong>Success:</strong> #TempData["Success"].ToString()</p>
</div>
}
}
<h3>#student.FirstName #student.LastName - #student.StudentID</h3>
<h4>#student.GradeLevel - #student.ExpectedGraduation</h4>
<h3>Degree Audit</h3>
#using (Html.BeginForm("GetCourse", "Student", FormMethod.Post, new { #class = "form-horizontal", role = "form" }))
{
#Html.AntiForgeryToken()
<hr />
#Html.ValidationSummary("", new { #class = "text-danger" })
<p>Start Year: #Html.DropDownList("startYear", (IEnumerable<SelectListItem>)yearRange.ToList().Select(rr => new SelectListItem { Value = rr.ToString(), Text = rr.ToString() }).ToList(), "Select...") Start Semester: #Html.DropDownList("startSemester", EnumHelper.GetSelectList(typeof(SchoolRegistration.Models.Semesters)), "Select...")</p>
<p>End Year: #Html.DropDownList("endYear", (IEnumerable<SelectListItem>)yearRange.ToList().Select(rr => new SelectListItem { Value = rr.ToString(), Text = rr.ToString() }).ToList(), "Select...") End Semester: #Html.DropDownList("endSemester", EnumHelper.GetSelectList(typeof(SchoolRegistration.Models.Semesters)), "Select...")</p>
<input type="submit" value="Search" id="btnStudentFilter" />
}
<h3>Course Management</h3>
#using (Html.BeginForm("GetCourseForStudent", "Student", FormMethod.Post))
{
#Html.AntiForgeryToken();
<hr />
<p><strong>Subject: </strong>#Html.DropDownList("cat", EnumHelper.GetSelectList(typeof(SchoolRegistration.Models.Categories)), "Select...")</p>
<p><strong>CAT NO: </strong>#Html.TextBox("CourseId")</p>
<p><strong>Section: </strong>#Html.TextBox("SectionId")</p>
<p><strong>Year: </strong>#Html.TextBox("Year")</p>
<p><strong>Semester: </strong>#Html.DropDownList("semester", EnumHelper.GetSelectList(typeof(SchoolRegistration.Models.Semesters)), "Select...")</p>
<input type="submit" value="Search" />
}
#if (TempData["RetrievedCourses"] != null)
{
List<SchoolRegistration.Models.Course> courses = (List<SchoolRegistration.Models.Course>)TempData["RetrievedCourses"];
for (int i = 0; i < courses.Count; i++)
{
<p>#courses[i].Name - #courses[i].Category #courses[i].CourseId . #courses[i].SectionId - #courses[i].Credits Credits | #Html.ActionLink("Add to Student", "AddCourseForStudent", "Student", new { courseId = courses[i].id, studentId = student.id},null)</p>
}
<p>Course Search DIV Link</p>
}
AddCourseToStudent:
public ActionResult AddCourseForStudent(int courseId, int studentId)
{
using (var context = new StudentDbContext())
{
Student student = context.Students.Where(u => u.id == studentId).FirstOrDefault();
Course course = context.Courses.Where(u => u.id == courseId).FirstOrDefault();
List<Course> completed = student.CompletedCourses;
List<Course> pending = student.PendingCourses;
List<Course> failed = student.FailedCourses;
if (completed == null)
completed = new List<Course>();
student.CompletedCourses = completed;
if (pending == null)
pending = new List<Course>();
student.PendingCourses = pending;
if (failed == null)
failed = new List<Course>();
student.FailedCourses = failed;
pending.Add(course);
try
{
context.Entry(student).State = System.Data.Entity.EntityState.Modified;
context.SaveChanges();
ViewBag.Student = student;
}
catch (DbEntityValidationException e)
{
foreach (var eve in e.EntityValidationErrors)
{
Debug.WriteLine("Entity of type \"{0}\" in state \"{1}\" has the following validation errors:",
eve.Entry.Entity.GetType().Name, eve.Entry.State);
foreach (var ve in eve.ValidationErrors)
{
Debug.WriteLine("- Property: \"{0}\", Error: \"{1}\"",
ve.PropertyName, ve.ErrorMessage);
}
}
throw;
}
}
TempData["Success"] = "Courses added to student.";
return Redirect(Request.UrlReferrer.ToString());
}
Models:
public class InstructorViewModels
{
}
public enum GradeLevels
{
Freshman,
Sophmore,
Junior,
Senior,
Graduate
}
public enum Categories
{
CSCI
}
public enum Semesters
{
FA,
SP,
S1,
S2,
S3,
IN
}
public enum CourseTypes
{
Humanities
}
public class Student
{
public int id { get; set; }
[Required]
public int StudentID { get; set; }
[Required]
public string FirstName { get; set; }
[Required]
public string LastName { get; set; }
public string MiddleName { get; set; }
[Required]
public GradeLevels GradeLevel { get; set; }
[Required]
public List<Course> CompletedCourses { get; set; }
[Required]
public List<Course> PendingCourses { get; set; }
[Required]
public List<Course> FailedCourses { get; set; }
[Required]
public int ExpectedGraduation { get; set; }
}
public class Course
{
public int id { get; set; }
public int CourseId { get; set; }
[Required]
public string Name { get; set; }
[Required]
public int SectionId { get; set; }
[Required]
public Categories Category { get; set; }
[Required]
public int Credits { get; set; }
[Required]
public Semesters Semester { get; set; }
[Required]
public int Year { get; set; }
[Required]
public string InstructorId { get; set; }
public CourseTypes CourseType { get; set; }
}
Database:
I'm trying to pass few ViewModels to the same View via ViewData. Unfortunately I'm new to MVC and I do not have idea what's wrong with that.
Here is first DataViewModel:
public class TagsViewModel
{
public string TagName { get; set; }
public int TagId { get; set; }
}
And another one:
public class ShortPostViewModel
{
public int PostId { get; set; }
public string PostSubject { get; set; }
public DateTime? PostCreated { get; set; }
public string PostImage { get; set; }
public string PostAuthor { get; set; }
public byte? PostRating { get; set; }
public List<PostTagsViewModel> PostedTags { get; set; }
}
Here is repository:
public IEnumerable<BlogPostViewModel.ShortPostViewModel> GetLast20()
{
var last = from a in _db.blog_post
orderby a.Posted descending
select new BlogPostViewModel.ShortPostViewModel
{
PostId = a.ID,
PostAuthor = (from u in _db.users where u.ID == a.Author
select u.Login).FirstOrDefault(),
PostCreated = a.Posted,
PostImage = a.PostAvatar,
PostRating = a.Rating,
PostSubject = a.Subject,
PostedTags = (from b in _db.tags
join c in _db.posted_tags on b.ID equals c.TagID
where c.PostID == a.ID
select new PostTagsViewModel
{
TagId = b.ID,
TagName = b.TagName
}).ToList()
};
return last.Take(20);
}
And one more:
public IEnumerable<TagsViewModel> GetAll()
{
var t = from a in _db.tags
select new TagsViewModel
{
TagId = a.ID,
TagName = a.TagName
};
return t;
}
So here is Controller:
public ActionResult Index()
{
ViewData["ShortPost"] = _postRepository.GetLast20().AsEnumerable();
ViewData["Tags"] = _tagsRepository.GetAll().AsEnumerable();
return View();
}
So on the View:
<ul class="list-group">
#foreach (var item in (IEnumerable<ShortPostViewModel>)ViewData["ShortPost"])
{
<li class="list-group-item">
<img src="#item.PostImage" alt=""/>
<h3>#Html.ActionLink(#item.PostSubject, "Details", "BlogPost", new { id = item.PostId }, null)</h3>
Создано: #item.PostCreated. Автор: #item.PostAuthor. Оценка: #item.PostRating.
<p>
Темы статьи:
#foreach (var tag in #item.PostedTags)
{
<i class="glyphicon glyphicon-tag"></i> #Html.ActionLink(#tag.TagName, "Tag", "Search", new { id = tag.TagId }, null)
}
</p>
</li>
}
</ul>
</div>
<div class="col-md-4">
#foreach (var tag in (IEnumerable<TagsViewModel>)ViewData["Tags"])
{
<span class="label label-info"><i class="glyphicon glyphicon-tag"></i> #Html.ActionLink(#tag.TagName, "Tag", "Search", new { id = tag.TagId }, null)</span>
}
</div>
This all look just fine for me. Could you advise how should I fix that?
Instead of using several ViewData, I would recommend using a new ViewModel class that have a List<TagsViewModel> property and a List<ShortPostViewModel> property so you don't have to do the conversions in the view. Let's say the ViewModel is named CustomViewModel
public class CustomViewModel
{
public CustomViewModel()
{
this.ShortPosts = new List<ShortPostViewModel>();
this.Tags = new List<TagsViewModel>();
}
public List<ShortPostViewModel> ShortPosts { get; set; }
public List<TagsViewModel> Tags { get; set; }
}
then in your controller
public ActionResult Index()
{
CustomViewModel model = new CustomViewModel();
model.ShortPosts = _postRepository.GetLast20().ToList();
model.Tags = _tagsRepository.GetAll().ToList();
return View(model);
}
Make sure you have this at the top of your view code
#model CustomViewModel
You can enumerate the items of ShortPosts in your view as below
#foreach (var item in Model.ShortPosts)
and enumerate the items of Tags as below
#foreach (var tag in Model.Tags)
I have the following form:
#model Teesa.Models.SearchModel
#using (Html.BeginForm("Index", "Search", FormMethod.Get, new { id = "SearchForm" }))
{
<div class="top-menu-search-buttons-div">
#if (!MvcHtmlString.IsNullOrEmpty(Html.ValidationMessageFor(m => m.SearchText)))
{
<style type="text/css">
.top-menu-search-text
{
border: solid 1px red;
}
</style>
}
#Html.TextBoxFor(q => q.SearchText, new { #class = "top-menu-search-text", id = "SearchText", name = "SearchText" })
#Html.HiddenFor(q=>q.Page)
<input type="submit" value="search" class="top-menu-search-submit-button" />
</div>
<div id="top-menu-search-info" class="top-menu-search-info-div">
Please Select one :
<hr style="background-color: #ccc; height: 1px;" />
<div class="top-menu-search-info-checkbox-div">
#Html.CheckBoxFor(q => q.SearchInBooks, new { id = "SearchInBooks", name = "SearchInBooks" })
<label for="SearchInBooks">Books</label>
</div>
<div class="top-menu-search-info-checkbox-div">
#Html.CheckBoxFor(q => q.SearchInAuthors, new { id = "SearchInAuthors" })
<label for="SearchInAuthors">Authors</label>
</div>
<div class="top-menu-search-info-checkbox-div">
#Html.CheckBoxFor(q => q.SearchInTags, new { id = "SearchInTags" })
<label for="SearchInTags">Tags</label>
</div>
}
and the following Controller and Models :
namespace Teesa.Models
{
public class SearchModel
{
[Required(ErrorMessage = "*")]
public string SearchText { get; set; }
public bool SearchInTags { get; set; }
public bool SearchInAuthors { get; set; }
public bool SearchInBooks { get; set; }
public int Page { get; set; }
public List<SearchBookModel> Result { get; set; }
public List<SimilarBookModel> LatestBooks { get; set; }
}
public class SearchBookModel
{
public int Id { get; set; }
public string Title { get; set; }
public string Author { get; set; }
public string Summary { get; set; }
public List<Tags> Tags { get; set; }
public string StatusName { get; set; }
public string SubjectName { get; set; }
public string ThumbnailImagePath { get; set; }
public string BookRate { get; set; }
public string RegistrationDate { get; set; }
public int NumberOfVisit { get; set; }
}
}
[HttpGet]
public ActionResult Index(SearchModel model)
{
FillSearchModel(model);
if (ModelState.IsValid)
{
string page = model.Page;
DatabaseInteract databaseInteract = new DatabaseInteract();
model.Result = new List<SearchBookModel>();
List<Book> allBooks = databaseInteract.GetAllBooks();
List<Book> result = new List<Book>();
#region
if (model.SearchInTags)
{
var temp = (from item in allBooks
from tagItem in item.Tags
where tagItem.Name.Contains(model.SearchText)
select item).ToList();
result.AddRange(temp);
}
if (model.SearchInBooks)
{
var temp = (from item in allBooks
where item.عنوان.Contains(model.SearchText)
select item).ToList();
result.AddRange(temp);
}
if (model.SearchInAuthors)
{
var temp = (from item in allBooks
where item.Author.Contains(model.SearchText)
select item).ToList();
result.AddRange(temp);
}
#endregion
#region Paging
string itemsPerPage = databaseInteract.GetItemsPerPage();
int ItemInPage = int.Parse(itemsPerPage);
var pagingParams = Helpers.SetPagerParameters(page, ItemInPage, result);
ViewBag.AllPagesCount = pagingParams.AllPagesCount;
ViewBag.CurrentPageNumber = pagingParams.CurrentPageNumber;
ViewBag.CountOfAllItems = pagingParams.CountOfAllItems.ToMoneyFormat().ToPersianNumber();
result = pagingParams.ListData as List<Book> ?? result;
#endregion
foreach (var item in result)
{
var bookRate = (item.BookRate == null || item.BookRate.Count == 0)
? 0.0
: item.BookRate.Average(q => q.Rate);
model.Result.Add(new SearchBookModel
{
Author = item.Author,
Id = item.Id,
.
.
.
});
}
}
else
{
model.Result = new List<SearchBookModel>();
}
return View(model);
}
When I submit the form I see the following query strings(Notice the duplicate names) :
http://localhost:2817/Search?SearchText=book&Page=2&SearchInBooks=true&SearchInBooks=false&SearchInAuthors=true&SearchInAuthors=false&SearchInTags=true&SearchInTags=false
But it has to be something like this :
http://localhost:2817/Search?SearchText=book&Page=2&SearchInBooks=true&SearchInAuthors=true&SearchInTags=true
How can I fix it ?
Thanks
Html.Checkbox (and the related For... methods) generate a hidden input for false, and the checkbox for true. This is to ensure that model binding works consistently when binding.
If you must get rid of "false" items resulting from the hidden inputs, you'll need to construct the checkbox inputs yourself (using HTML and not the helper).
<input type="checkbox" id="SearchInBooks" name="SearchInBooks">
Why dont your create a Post Method with a matching name to the Get method. This will ensure that the code is much easier to debug. As you will not have a huge function to go through trying to find problems like this.
I cannot find a where your getting the duplicate url query strings from though.
This will also allow you to bind your results back to the model.
If you want the model binding to happen successfully then you have to go with this way because that is the nature of the Html.CheckBox/Html.CheckBoxFor methods they will render a hidden field as well.
I would suggest rather go with POST to make your life easy. If you still want to use GET then you have to use checkbox elements directly but you have to take care of the model binding issues. Not all the browsers returns "true" when the checkbox is checked for ex. firefox passes "on" so the default model binder throws an error.
Other alternate options is you can go for custom model binder or you can submit the form using jquery by listening to the submit event.
I have this problem where i want to make 7 dropdowns for each day of the week.
In each one of those dropdowns i wish to add the same data.
My ViewModel:
public class WeekDienstCreateViewModel
{
public WeekDienst weekDienst {get; set;}
public List<DienstPerWeekDienst> diensten { get; set; }
public WeekDienstCreateViewModel() { }
}
My Create Method in Controller:
As u can see I add everything allready except DienstId which is want to add with my dropdowns.
public ActionResult Create(int id)
{
WeekDienst wd = _service.FindWeekDienst(id);
WeekDienstCreateViewModel vm = new WeekDienstCreateViewModel();
vm.diensten = new List<DienstPerWeekDienst>();
vm.weekDienst = wd;
for (int i = 1; i <= 7; i++)
{
DienstPerWeekDienst dpwd = new DienstPerWeekDienst();
dpwd.volgnummer = i;
dpwd.WeekDienstId = wd.Id;
vm.diensten.Add(dpwd);
}
ViewBag.Diensten = _service.DienstenList(wd.AfdelingId);
return View(vm);
}
Classes:
public class DienstPerWeekDienst
{
[Key]
public int Id { get; set; }
[Required]
public int WeekDienstId { get; set; }
[Required]
public int DienstId { get; set; }
[Required]
[Range(1, 7)]
public int volgnummer { get; set; }
[ForeignKey("WeekDienstId")]
public virtual WeekDienst WeekDienst { get; set; }
[ForeignKey("DienstId")]
public virtual Dienst Dienst { get; set; }
public virtual ICollection<WeekDienst> WeekDiensten { get; set; }
}
public class WeekDienst
{
[Key]
public int Id { get; set; }
[Required]
public int AfdelingId { get; set; }
[Required]
[StringLength(5, ErrorMessage = "Value for {0} cannot exceed {1} characters.")]
[RegularExpression(#"^[a-zA-Z0-9]{5}$", ErrorMessage = "Verplicht 5 cijfers lang.")]
public string code { get; set; }
[DisplayName("Template")]
public bool template { get; set; }
[ForeignKey("AfdelingId")]
public virtual Afdeling Afdeling { get; set; }
}
And in my view i wish to create 7 dropdowns where i put in all my "Diensten" (class Dienst, fk in DienstPerWeekDienst). When I choose 1 i wish to add the "DienstId" into the "DienstPerWeekDienst" class.
So in my View i got this:
#foreach (var day in Model.diensten)
{
var currentDay=day;
#Html.DropDownListFor(currentDropDown=>currentDay, new SelectList(ViewBag.Diensten, "Value", "Text"))
}
I Wish to postback the chosen "Diensten" and create the "WeekDienst" but now i am just posting a null "DienstPerDienstWeekCreateViewModel". How am I able to fix this?
Thanks in Advance
FIX (Thanks to Siva Gopal)
I fixed this by doing:
#for (int i = 0; i < #Model.diensten.Count; i++)
{
#Html.HiddenFor(m => (m.diensten[i].volgnummer))
#Html.HiddenFor(m => (m.diensten[i].WeekDienstId))
#Html.DropDownListFor(m=> (m.diensten[i].DienstId), new SelectList(ViewBag.Diensten, "Value", "Text"))
}
You may try using
#foreach (var day in Model.diensten)
{
var currentDay=day;
#Html.DropDownListFor(currentDropDown=>currentDay, new SelectList(ViewBag.Diensten, "PropertyName_Holding_Value", "PropertyName_Holding_DisplayText"), new { })
} //This uses the Lambda Expression. Your dropdown Name/Id would be 1,2,3 etc. based on currentDay value.
OR
#foreach (var day in Model.diensten)
{
var currentDay=day;
var dropdownName=string.Format("diensten[{0}]",day-1); //If you want to model bind the selected dropdown value to input entity in POST request. The final dropdownName format should match the hierarchy of the property inside input entity/object. Even without this name formation, you can still POST the selected value back using Jquery/Javascript.
#Html.DropDownList(dropdownName, new SelectList(ViewBag.Diensten, "PropertyName_Holding_Value", "PropertyName_Holding_DisplayText"), new {})
} //
Note for Value Post back/model bind on full Page submit:
To be able to model bind/POST back values to the server, the html element names corresponding to the properties should be rendered as follows: Suppose if you display Employee.Department.Name, then name of textbox, displaying the Department Name in View should match Department_ReferenceName_Inside_Employee.Name for model binding.
Model:
public class Employee
{
public int Id { get; set; }
public string Name { get; set; }
public string City { get; set; }
public Department EmpDepartment { get; set; }
public List SubOrdinates { get; set; }
}
public class Department
{
public string Name { get; set; }
}
Controller:
public class HomeController : Controller
{
public ActionResult Index()
{
ViewBag.Message = "Welcome to ASP.NET MVC!";
//Prepare the model and send it to the view
Employee emp = new Employee { EmpDepartment = new Department { Name = "IT" } };
emp.SubOrdinates = new List<Employee> { new Employee { Name = "Emp1" }, new Employee { Name = "Emp2" } };
return View(emp);
}
[HttpPost]
public ActionResult Index(Employee emp)
{ //Put a break-point here and see how the modified values in view are flowing into emp..
return View(emp);
}
public ActionResult About()
{
return View();
}
}
View:
#model MvcApplication.Models.Employee
#using (Html.BeginForm())
{
#Html.TextBoxFor(m => m.EmpDepartment.Name)
#Html.LabelForModel("SubOrdinates :")
for (int i = 0; i < #Model.SubOrdinates.Count; i++)
{
#Html.TextBoxFor(m => (m.SubOrdinates[i].Name))
}
<input type="submit" name="name" value="Submit" /> }
ViewSource/PageSource:
The above text box syntax will be rendered as :
<input id="EmpDepartment_Name" name="EmpDepartment.Name" type="text" value="IT" /> <!--See above html : name=EmpDepartment.Name -->
<label for="">SubOrdinates :</label>
<input id="SubOrdinates_0__Name" name="SubOrdinates[0].Name" type="text" value="Emp1" />
<input id="SubOrdinates_1__Name" name="SubOrdinates[1].Name" type="text" value="Emp2" /> <!--See above html for how collection item Name(s) are being renderd by view engine-->
<input type="submit" name="name" value="Submit" />
#foreach (var day in Model.diensten)
{
var currentDay = day;
#Html.DropDownListFor(x => currentDay, new SelectList(ViewBag.Diensten, "Value", "Text"), new { #id = "DienstList" })
}
List<MvcApplication1.Models.Country> cntry = db.Countries.ToList();
SelectListItem sss = new SelectListItem();
List<SelectListItem> sltst = new List<SelectListItem>();
sss.Text = "Select";
sss.Value = "0";
sltst.Add(sss);
foreach (MvcApplication1.Models.Country s in cntry){
SelectListItem s1 = new SelectListItem();
s1.Text = s.Country1;
s1.Value = Convert.ToString(s.Id);
sltst.Add(s1);}
#Html.DropDownList("country", sltst, new { #id = "country" })
I hope I explain this correctly..
What I am trying to do is build up a session array with a list of products in.
Then display these on a form in text boxes with quantiles next to them and be able to submit them. I think I need to use template editor. But I don't know how to put data into the list of items.
This is how my session variable is currently being populated..
IList<EnqProduct> items2 = Session["enquiry"] as IList<EnqProduct>;
desc = desc.Replace(",", "");
EnqProduct item = new EnqProduct();
item.Id = (items2.Count + 1).ToString();
item.Product = desc;
item.Quantity = "0";
items2.Add(item);
So desc, can be productone, product two etc.
Enquiry Product model:
namespace MvcEditorTemplates.Models
{
public class EnqProduct
{
public string Id { get; set; }
public string Product { get; set; }
public string Quantity { get; set; }
}
}
Normal Enquiry Model:
public class Enquiry
{
public List<EnqProduct> EnqProduct { get; set; }
}
How i am trying to populate the model, but this is static. I need it to be populated from the array items:
var EnquiryModel = new Enquiry {
EnqProduct = items2.Select(c => new EnqProduct()
{
Quantity = c.Quantity,
Product = c.Product
})
};
Enquiry product template view:
#model MvcEditorTemplates.Models.EnqProduct
<div class="fl">
<p>
#Html.LabelFor(x => x.Product)
#Html.TextBoxFor(x => x.Product)
</p>
<p>
#Html.LabelFor(x => x.Quantity)
#Html.TextBoxFor(x => x.Quantity)
</p>
</div>
This is how im trying to get it to be displayed din the view:
#Html.EditorFor(model => model.EnqProduct)
EDIT:
at items2.Select(c => new EnqProduct()
i get a IEnumerbale error something about cast?
Try something like this:
public class ErrorMessage
{
public DateTime ErrorDate { get; set; }
public string ErrorText { get; set; }
public int DexRowId { get; set; }
}
public class Transaction
{
public string TransactionType { get; set; }
public string Processed { get; set; }
public DateTime UpdateDate { get; set; }
public int DexRowID { get; set; }
public string Text { get; set; }
}
public class Result
{
public List<ErrorMessage> errorMessageList { get; set; }
public List<Transaction> transactionList { get; set; }
}
In your controller:
List<Transaction> transactionList = ...;//query to populate your list;
List<ErrorMessage> errorMessageList = ...;//query to populate your list;
Result result = new Result();
result.ErrorMessageList = errorMessageList;
result.TransactionList = transactionList;
return View(result);
and in your view:
#model Models.Result
#{
ViewBag.Title = "Result";
Layout = "~/Views/Shared/_ResultLayout.cshtml";
}
EDIT:
#model IENumerable<MvcEditorTemplates.Models.EnqProduct>
#{
foreach( EnqProduct ep in #model)
{
.... your code comes here.........
}
}