Declaring Enumeration

using Serenity.ComponentModel;
using System.ComponentModel;

namespace MovieTutorial.MovieDB
{
    [EnumKey("MovieDB.MovieKind")]
    public enum MovieKind
    {
        [Description("Film")]
        Film = 1,
        [Description("TV Series")]
        TvSeries = 2,
        [Description("Mini Series")]
        MiniSeries = 3
    }
}

Adding Field in Row.cs

[DisplayName("Kind"), NotNull]
public MovieKind? Kind
{
    get { return (MovieKind?)Fields.Kind[this]; }
    set { Fields.Kind[this] = (Int32?)value; }
}


public class RowFields : RowFieldsBase
{
    public readonly Int32Field Kind;
}

Add field in Form.cs

namespace MovieTutorial.MovieDB.Forms
{

    [FormScript("MovieDB.Movie")]
    [BasedOnRow(typeof(Entities.MovieRow))]
    public class MovieForm
    {
        // ...
        public MovieKind Kind { get; set; }
        public Int32 Runtime { get; set; }
    }
}

Now build and run T4 template