验证字符串是否已压缩

Question

我从服务器端应用程序接收压缩字符串数据，然后我正在解压缩字符串，如何验证我收到的数据是否被压缩。

string compressedData = Getting from some function;

//What can i add here to check if the compressedData string contain already compressed string or not.

    string decompressedData = Decompress(compressedData);


    //Decompress Function
        static string Decompress(string compressedText)
            {
                if (string.IsNullOrEmpty(compressedText))
                    return "";

                byte[] gzBuffer = Convert.FromBase64String(compressedText);
                using (MemoryStream ms = new MemoryStream())
                {
                    int msgLength = BitConverter.ToInt32(gzBuffer, 0);
                    ms.Write(gzBuffer, 4, gzBuffer.Length - 4);

                    byte[] buffer = new byte[msgLength];

                    ms.Position = 0;
                    using (GZipStream zip = new GZipStream(ms, CompressionMode.Decompress))
                    {
                        zip.Read(buffer, 0, buffer.Length);
                    }

                    return Encoding.UTF8.GetString(buffer);
                }
            }

Answer 1

如果解压缩成功，您可以尝试

else