Add css class to row in MVCContrib grid - asp.net

Question

I'm displaying a grid of data, and one of the attributes is an expiration date. If the expiration date is less than 60 days away, I'd like to highlight the row.
I found this post, and used the answer there to use the RowAttributes function:
#Html.Grid(Model.PagedList).Columns(column =>{
column.For(m => m.Name);
column.For(m => m.ExpirationDate);
}).Sort(Model.GridSortOptions)
.Attributes(#class => "grid")
.RowAttributes(m => new MvcContrib.Hash(#class =>
(m.Item.ExpirationDate.Value.AddDays(-60) < DateTime.Now)) ? "warning" : "")
But I get a compilation error saying:
Cannot implicitly convert type 'MvcContrib.Hash' to 'bool'
What am I doing wrong here?

Answer 1

The following works fine for me:
Model:
public class MyViewModel
{
public DateTime? ExpirationDate { get; set; }
}
Controller:
public class HomeController : Controller
{
public ActionResult Index()
{
var model = new[]
{
new MyViewModel { ExpirationDate = DateTime.Now.AddDays(70) },
new MyViewModel { ExpirationDate = DateTime.Now.AddDays(30) },
new MyViewModel { ExpirationDate = DateTime.Now.AddDays(90) },
};
return View(model);
}
}
View:
#using MvcContrib.UI.Grid
#using MvcContrib
#model IEnumerable<MyViewModel>
#(Html
.Grid(Model)
.Columns(column => {
column.For(m => m.ExpirationDate);
})
.Attributes(#class => "grid")
.RowAttributes(m => new Hash(#class => (m.Item.ExpirationDate.Value.AddDays(-60) < DateTime.Now) ? "warning" : "" ))
)
You could also write an extension method for your model:
public static class RowAttributesExtensions
{
public static Hash GetRowAttributes(this MyViewModel model)
{
return new Hash(#class => (model.ExpirationDate.Value.AddDays(-60) < DateTime.Now) ? "warning" : "");
}
}
and then:
#(Html
.Grid(Model)
.Columns(column => {
column.For(m => m.ExpirationDate);
})
.Attributes(#class => "grid")
.RowAttributes(m => m.Item.GetRowAttributes())
)
which makes it more readable.