Two models in a view (with foreach) - asp.net-mvc-4

Question

I have two classes - Student.cs and Lecturer.cs placed under Models. Now that in my razor view I have to place two classes together.
I know there's a method Tuple to solve the problem. But I do not know what to do next. What should I do with my #foreach?
Here's my code in cshtml.
#model Tuple<MVCApp1.Models.Student, MVCApp1.Models.Lecturer>
#{
ViewBag.Title = "MainPage";
Layout = "~/Views/Shared/_Layout.cshtml";
}
I'm using a table, below is my #foreach code section.
#foreach (var j in Model)
{
<tr>
<td">#j.FirstName
</td>
<td>#j.MiddleName
</td>
<td>#j.LastName
</td>
I need to have 2 tables each with different attributes. First table from Student.cs and second table will be Lecturer.cs.
I know there is something wrong with the #foreach but I just can't find any solution online. Please help.

Answer 1

A tuple does not expose an iterator.
public class Tuple<T1> : IStructuralEquatable, IStructuralComparable, IComparable, ITuple
What you are after is a ViewModel.
public class ViewModel
{
public List<Student> Students { get; set; }
public List<Teacher> Teachers { get; set; }
}
public ActionResult Index()
{
ViewModel model = new ViewModel();
// retreive from database
model.Students = new List<Student>() { new Student()};
model.Teachers = new List<Teacher>() { new Teacher()};
return View(model);
}
Then you can structure your table
<table>
<tr>
<th>First</th>
<th>Middle</th>
<th>Last</th>
</tr>
#foreach (var student in Model.Students)
{
<tr>
<td>#student.First</td>
<td>#student.Middle</td>
<td>#student.Last</td>
</tr>
}
#foreach (var teacher in Model.Teachers)
{
<tr>
<td>#teacher.First</td>
<td>#teacher.Middle</td>
<td>#teacher.Last</td>
</tr>
}
</table>
Once you are comfortable with this, you can explore inheritance and Entity Framework TPH Table per hierarchy.
You could end up with something like this:
public abstract class Person
{
public int Id { get; set; }
public string First { get; set; }
public string Middle { get; set; }
public string Last { get; set; }
}
public class Teacher : Person
{
public string Class { get; set; }
public DateTime HireDate { get; set; }
}
public class Student : Person
{
public int Grade { get; set; }
public DateTime EnrolledDate { get; set; }
}
public class ViewModel
{
public List<Student> StudentsOnly { get; set; }
public List<Person> StudentsAndTeachers { get; set; }
}
public ActionResult Index()
{
Context db = new Context();
ViewModel model = new ViewModel();
// You could collect just the students
model.StudentsOnly = db.People.OfType<Student>().ToList();
// Or all of them
model.StudentsAndTeachers = db.People.ToList();
return View(model);
}
Then you would only have to iterate through the single list of people, if you only needed to display their names.
<table>
...
#foreach (var person in Model.StudentsAndTeachers)
{
<tr>
<td>#person.First</td>
<td>#person.Middle</td>
<td>#person.Last</td>
</tr>
}
</table>