C#ZIP根据路径读取压缩包内文件数量

 /// <summary>
        /// 根据压缩包路径读取此压缩包内文件个数
        /// </summary>
        /// <param name="strAimPath"></param>
        /// <returns></returns>
        private int FileInZipCount(string strAimPath)
        {
            ZipEntry zipEntry_ = null;
            FileStream fsFile_ = null;
            ZipFile zipFile_ = null;
            try
            {
                fsFile_ = new FileStream(strAimPath, FileMode.OpenOrCreate);
                zipFile_ = new ICSharpCode.SharpZipLib.Zip.ZipFile(fsFile_);
                long l_New = zipFile_.Count;
                iNew = Convert.ToInt32(l_New);
                return iNew;
            }
            catch (Exception ex)
            {
                ErrorLog.WriteError(ex.ToString());
                return ;
            }
            finally
            {
                if (zipFile_ != null)
                {
                    if (zipFile_.IsUpdating)
                        zipFile_.CommitUpdate();
                    zipFile_.Close();
                }
                if (fsFile_ != null)
                    fsFile_.Close();
                if (zipEntry_ != null)
                    zipEntry_ = null;
            }
        }