@(await Html
    .SimpleGrid(Model.Take(3))

    // Sets the Header from an Expression
    .AddColumn(col => col.For(movie => movie.Name))

    // Set Header Expression directly
    .AddColumn(col => col
        .HeaderFor(movie => movie.Director)
        .DisplayAs(movie => movie.Director))

    // Define an explicit Header
    .AddColumn(col => col
        .Header("GENRE")
        .DisplayAs(movie => movie.Genre))

    .RenderAsync())

The Header Expression will resolve the name in the following progression:

1. Display Name Attribute if it exists
2. DisplayName Attribute if it exists
3. Name of the Property