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ASP.NET MVC - Passing Grouped data into a View

Answer 1

+1 A:

Well, then group the data and pass it onto your View from your Controller...

public ViewResult Foo()
{
    var data = this.GetGroupedData();
    return this.View(data);
}

private IEnumerable<Bar> GetGroupedData()
{
    return from x in GetData()
           group x by x.Baz into g
           select new Bar(g.Key);
}

Mark Seemann 2010-01-07 09:30:25

How do you strongly type the view for this?

Mad Halfling 2010-01-07 11:51:18

In this example, the View would be strongly typed as `IEnumerable<Bar>`. Normally, though, I would create a specific ViewModel that encapsulates the list.

Mark Seemann 2010-01-07 12:31:51

How do you grab other properties as well as the grouped key using this method?

Mad Halfling 2010-01-07 14:07:42

http://msdn.microsoft.com/en-us/library/bb384063.aspx

Mark Seemann 2010-01-07 14:27:38

Answer 2

+1 A:

You may want to abstract the model you pass to your view from the LINQ 2 SQL objects; check out the View Model Pattern. If this means you find yourself potentially writing lots of code to map properties from LINQ 2 SQL objects to your View Model objects then consider using AutoMapper.

Richard Ev 2010-01-07 10:33:32

Answer 3

+1 A:

I would define Presentation-Models that represent your groups in your View. Fill the Presentation-Models with LINQ and pass them to your View.

With Presentation-Models you have strongly typed data to display in your view.

Louis Haußknecht 2010-01-07 10:43:53

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ASP.NET MVC - Passing Grouped data into a View

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