Subset of the content of the secureFileUpload a Custom Field Type for Sitecore WFFM

SecureFileUpload.cs

namespace JonathanRobbins.SecureFileUpload.Webforms.Controls
{
    [ListAdapter("Items", typeof(ListItemsAdapter))]
    [Adapter(typeof(FileUploadAdapter))]
    public class SecureFileUpload : ValidateControl, IHasTitle
    {
        
        [VisualFieldType(typeof(SelectDirectoryField))]
        [VisualProperty("Upload To:", 0)]
        [DefaultValue("/sitecore/media library")]
        [VisualCategory("Upload")]
        public string UploadTo
        {
            get { return this._uploadDir; }
            set { this._uploadDir = value; }
        }
        
        [PersistenceMode(PersistenceMode.InnerProperty)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        [Browsable(false)]
        [VisualCategory("File Types")]
        [VisualFieldType(typeof(ListField))]
        [TypeConverter(typeof(ListItemCollectionConverter))]
        [DefaultValue("%3cquery+t%3d%22root%22+vf%3d%22__ID%22%3e%3cvalue%3e%7b7C75E0B5-3C17-4471-9F81-0490306EC71E%7d%3c%2fvalue%3e%3c%2fquery%3e")]
        [Description("Collection of items.")]
        [VisualProperty("Items:", 100)]
        public ListItemCollection Items
        {
            get
            {
                return this._items;
            }
            set
            {
                this._items = value;
            }
        }

        [TypeConverter(typeof(ListItemCollectionConverter))]
        [VisualFieldType(typeof(MultipleSelectedValueField))]
        [VisualCategory("File Types")]
        [Browsable(false)]
        [VisualProperty("Selected Values:", 450)]
        public ListItemCollection SelectedValue
        {
            get
            {
                return this._selectedItems;
            }
            set
            {
                this._selectedItems = value;
            }
        }

        [VisualFieldType(typeof(EditField))]
        [VisualProperty("Max file size limit (MB) :", 5)]
        [VisualCategory("Upload")]
        public string FileSizeLimit
        {
            get
            {
                return this._fileSizeLimit.ToString();
            }
            set
            {
                int result;
                if (!int.TryParse(value, out result))
                    result = 5;
                this._fileSizeLimit = result;
            }
        }