Ks Notes

using System.IO.Compression;
      

        #region  檔案壓縮
        /// <summary>
        /// 檔案壓縮
        /// </summary>
        /// <param name="strDFile">壓縮前檔案及路徑</param>
        /// <param name="strCFile">壓縮後檔案及路徑</param>
        public void compressFile(string strDFile, string strCFile)
        {
            if (!File.Exists(strDFile)) throw new FileNotFoundException(); //先檢查檔案有無存在
            using (FileStream sourceStream = new FileStream(strDFile, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite))
            {
                byte[] buffer = new byte[sourceStream.Length];
                int checkCounter = sourceStream.Read(buffer, 0, buffer.Length);
                if (checkCounter != buffer.Length) throw new ApplicationException();
                using (FileStream destinationStream = new FileStream(strCFile, FileMode.OpenOrCreate, FileAccess.Write))
                {
                    using (GZipStream compressedStream = new GZipStream(destinationStream, CompressionMode.Compress, true))
                    {
                        compressedStream.Write(buffer, 0, buffer.Length);
                    }
                }
            }
        }
        #endregion