hehe.cs

try
            {
                DataTable dt = new DataTable();
                if (d.ItemsSource is IEnumerable)
                {
                    IEnumerable items = d.ItemsSource as IEnumerable;
                    List<string> propertyNames = new List<string>();

                    foreach (object o in items)
                    {
                        if (dt.Columns.Count == 0)
                            foreach (PropertyInfo p in o.GetType().GetProperties())
                            {
                                dt.Columns.Add(p.Name);
                                propertyNames.Add(p.Name);
                            }

                        DataRow dr = dt.NewRow();
                        foreach (string p in propertyNames)
                            dr[p] = o.GetType().GetProperty(p).GetValue(o, null);
                        dt.Rows.Add(dr);
                    }
                }
            }

lawl.rb

begin
  dt = Datatable.new
  propertyNames = Array.new

  d.ItemsSource.each do |o|
    o.GetType.GetProperties.each do |p|
      dt.Columns.Add p.Name
      propertyNames << p.Name
    end unless dt.Columns.Count == 0
    dr = dt.NewRow
    propertyNames.each { |p| dr[p] = o.GetType.GetProperty(p).GetValue(o, null) }
    dt.Rows.Add dr
  end if d.ItemsSource.is_a? Enumerable
end