private void SetDialogProperties(API.IFileDialog dialog)
        {
            // Description
            if( !string.IsNullOrEmpty(_description) )
            {
                if( _useDescriptionForTitle )
                {
                    dialog.SetTitle(_description);
                }
                else
                {
                    API.IFileDialogCustomize customize = (API.IFileDialogCustomize)dialog;
                    customize.AddText(0, _description);
                }
            }

            dialog.SetOptions(API.FOS.FOS_PICKFOLDERS | API.FOS.FOS_FORCEFILESYSTEM | API.FOS.FOS_FILEMUSTEXIST);

            if( !string.IsNullOrEmpty(_selectedPath) )
            {
                string parent = Path.GetDirectoryName(_selectedPath);
                if( parent == null || !Directory.Exists(parent) )
                {
                    dialog.SetFileName(_selectedPath);
                }
                else
                {
                    string folder = Path.GetFileName(_selectedPath);
                    dialog.SetFolder(API.CreateItemFromParsingName(parent));
                    dialog.SetFileName(folder);
                }
            }
        }