Grouping in Entity Framework MVC - asp.net-mvc

Question

Hi all i've currently got a list of telephone numbers being output using:-
Controller:-
public ActionResult ViewSubRange(int id)
{
IEnumerable<Number> numbers = context.Numbers.Where(m => m.RangeID == id).ToList();
return View("SubRange", numbers);
}
View:-
#model IEnumerable<TelephoneNumberManagement.Models.Number>
<table>
<tr>
<th>
Number
</th>
<th>
Status
</th>
</tr>
#foreach (var item in Model)
{
<tr>
<td>#item.Number1</td>
<td>#item.Status.StatusName</td>
</tr>
}
</table>
This is fine, however i've noticed that we can have a lot of numbers being output. I was wondering if its possible to group the numbers, so for example by Customer. So what i want to achieve is something like:-
01132210000-01132210999 CUSTOMER A
01132211000-01132211009 CUSTOMER B
01132211010-01132211029 CUSTOMER C

Answer 1

You could define a new view model:
public class MyViewModel
{
public string StatusName { get; set; }
public string Numbers { get; set; }
}
and then group by customer name:
public ActionResult ViewSubRange(int id)
{
var numbers = context.Numbers
.Where(m => m.RangeID == id)
.GroupBy(x => x.Status.StatusName)
.Select(x => new MyViewModel
{
StatusName = x.Key,
// TODO: could change the format if you will or
// select the min and max or whatever you need
Numbers = string.Join("-", x.Select(n => n.Number1))
})
.ToList();
return View(numbers);
}
and finally in your view:
#model IEnumerable<MyViewModel>
<table>
<tr>
<th>Number</th>
<th>Status</th>
</tr>
#foreach (var item in Model)
{
<tr>
<td>#item.Numbers</td>
<td>#item.StatusName</td>
</tr>
}
</table>