Why can't I go through my ViewData or Model?
I keep getting errors trying to iterate through the ViewData in the view there ... I even tried hard typing the IEnumerable view (App.Models.Namespace) and using the model, to no avail. Either I am getting an error for a missing GetEnumerable method or an invalid cast type ... Any idea how I do this?
Model ...
public IQueryable<Product> getAllProducts()
{
return (from p in db.Products select p);
}
controller...
public ActionResult Pricing()
{
IQueryable<Product> products = orderRepository.getAllProducts();
ViewData["products"] = products.ToList();
return View();
}
View ...
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
Pricing
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>Pricing</h2>
<div>
<select class="product">
<%foreach(var prod in ViewData["products"]){%>
<option><%=prod.Title %></option>
<%} %>
</select><select></select>
</div>
</asp:Content>
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6 answers
Why are you doing it like that? Why not do:
Inherits="System.Web.Mvc.ViewPage<IEnumerable<Product>>
in your view. Then, in your controller action, do:
public ActionResult Pricing()
{
IQueryable<Product> products = orderRepository.getAllProducts();
return View(products.ToList(););
}
Then you don't need to use at all ViewData
.
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If you are getting a list of more than two models and want to show two models in one list, you should use that. First, create two models: Student and second, Teacher.
// Create Models
public class Student
{
public int Id { get; set; }
public string Name { get; set; }
public string Address { get; set; }
public List<int> Marks { get; set; }
}
public class Teacher
{
public int Id { get; set; }
public string Name { get; set; }
public string Address { get; set; }
}
// Create a controller
public ActionResult Index()
{
List<Student> students = new List<Student>()
{
new Student {Id = 1, Name = "Vikas", Address = "Mohali", Marks = new List<int> {90, 23, 46,56} },
new Student {Id = 2, Name = "Rajeev", Address = "Mohali", Marks = new List<int> { 56, 78, 34, 67 }},
new Student {Id = 3, Name = "Ajay", Address = "Delhi", Marks = new List<int> {56, 78, 34, 56}}
};
List<Teacher> teachers = new List<Teacher>()
{
new Teacher {Id = 1, Name = "Arun Nagar", Address = "Delhi"},
new Teacher {Id = 2, Name = "Manish Kumar", Address = "Mohali"}
};
var Querylist = (from student in students
where student.Address == "Mohali"
select student.Name)
.Concat(from teacher in teachers
where teacher.Address == "Mohali"
select teacher.Name);
//get list in ViewBag
ViewBag.DataLIst = Querylist;
//get list in View Data
ViewData["DataLIst1"] = Querylist.ToList();
return View(Querylist.AsEnumerable());
}
//create View "Index.cshtml"
@foreach (var h in @ViewBag.DataLIst)
{
<h3>@h</h3>
}
@foreach (var s in @ViewData["DataLIst1"] as List< string>)
{
<h1>@s</h1>
}
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