System.IO.Compression.ZLibNative.CreateZLibStreamForDeflate C# (CSharp) Méthode

        public static ErrorCode CreateZLibStreamForDeflate(out ZLibStreamHandle zLibStreamHandle,
                                                           CompressionLevel level, int windowBits, int memLevel, CompressionStrategy strategy)
        {
            zLibStreamHandle = new ZLibStreamHandle();
            return zLibStreamHandle.DeflateInit2_(level, windowBits, memLevel, strategy);
        }

        private void DeflateInit(ZLibNative.CompressionLevel compressionLevel, int windowBits, int memLevel,
                                 ZLibNative.CompressionStrategy strategy)
        {
            ZErrorCode errC;

            try
            {
                errC = ZLibNative.CreateZLibStreamForDeflate(out _zlibStream, compressionLevel,
                                                             windowBits, memLevel, strategy);
            }
            catch (Exception cause)
            {
                throw new ZLibException(SR.ZLibErrorDLLLoadError, cause);
            }

            switch (errC)
            {
            case ZErrorCode.Ok:
                return;

            case ZErrorCode.MemError:
                throw new ZLibException(SR.ZLibErrorNotEnoughMemory, "deflateInit2_", (int)errC, _zlibStream.GetErrorMessage());

            case ZErrorCode.VersionError:
                throw new ZLibException(SR.ZLibErrorVersionMismatch, "deflateInit2_", (int)errC, _zlibStream.GetErrorMessage());

            case ZErrorCode.StreamError:
                throw new ZLibException(SR.ZLibErrorIncorrectInitParameters, "deflateInit2_", (int)errC, _zlibStream.GetErrorMessage());

            default:
                throw new ZLibException(SR.ZLibErrorUnexpected, "deflateInit2_", (int)errC, _zlibStream.GetErrorMessage());
            }
        }