DisplayNameFor() From List<Object> in Model
I believe this is pretty simple, I just can't seem to find the right way to show the display name for an item within a list within my model.
My simplified model:
public class PersonViewModel
{
public long ID { get; set; }
private List<PersonNameViewModel> names = new List<PersonNameViewModel>();
[Display(Name = "Names")]
public List<PersonNameViewModel> Names { get { return names; } set { names = value; } }
}
and Names:
public class PersonNameViewModel
{
public long ID { get; set; }
[Display(Name = "Set Primary")]
public bool IsPrimary { get; set; }
[Display(Name = "Full Name")]
public string FullName { get; set; }
}
Now I'd like to make a table to show all the names for a person, and get the DisplayNameFor
FullName
. Obviously,
@Html.DisplayNameFor(model => model.Names.FullName);
wouldn't work, and
@Html.DisplayNameFor(model => model.Names[0].FullName);
will break if there are no names. Is there a 'best way' to obtain the display name here?
This actually works, even without items in the list:
@Html.DisplayNameFor(model => model.Names[0].FullName)
It works because MVC parses the expression instead of actually executing it. This lets it find that right property and attribute without needing there to be an element in the list.
It's worth noting that the parameter (model
above) doesn't even need to be used. This works, too:
@Html.DisplayNameFor(dummy => Model.Names[0].FullName)
As does this:
@{ Namespace.Of.PersonNameViewModel dummyModel = null; }
@Html.DisplayNameFor(dummyParam => dummyModel.FullName)
There is another way for do it, and i guess that is more clear:
public class Model
{
[Display(Name = "Some Name for A")]
public int PropA { get; set; }
[Display(Name = "Some Name for B")]
public string PropB { get; set; }
}
public class ModelCollection
{
public List<Model> Models { get; set; }
public Model Default
{
get { return new Model(); }
}
}
And then, in the view:
@model ModelCollection
<div class="list">
@foreach (var m in Model.Models)
{
<div class="item">
@Html.DisplayNameFor(model => model.Default.PropA): @m.PropA
<br />
@Html.DisplayNameFor(model => model.Default.PropB): @m.PropB
</div>
}
</div>