/// <summary>
/// 根据附件组GUID获取对应的文件名列表，方便列出文件名
/// </summary>
/// <param name="attachmentGUID">附件组GUID</param>
/// <returns>返回ID和文件名的列表</returns>
public Dictionary <string, string> GetFileNames(string attachmentGUID)
{
IFileUpload dal = baseDal as IFileUpload;
return(dal.GetFileNames(attachmentGUID));
}