/// <summary>
/// 下载文件
/// </summary>
/// <param name="id">文件id</param>
/// <param name="stream">文件流</param>
public static void DownloadFile <TMongoFileType>(string id, Stream stream) where TMongoFileType : IMongoFile
{
EntityOperationExtensions.DBDownloadGridFS <TMongoFileType>(id, stream);
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="id">文件id</param>
/// <param name="localFileName">本地路径（绝对路径）</param>
public static void DownloadFile <TMongoFileType>(string id, string localFileName) where TMongoFileType : IMongoFile
{
EntityOperationExtensions.DBDownloadGridFS <TMongoFileType>(id, localFileName);
}