Decompression of string not working

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C#

compression

decompression

Hi Guys,

I'm facing the following problem while compressing and decompressing a string. To make it understand better, I'm including the code in step by step manner.

1. I've a JSON string something like the following one

[{"FirstName":"First Name 0","LastName":"Last Name 0","Department":{"DepartmentID":0,"DepartmentName":"Department Name 0"}},{"FirstName":"First Name 1","LastName":"Last Name 1","Department":{"DepartmentID":1,"DepartmentName":"Department Name 1"}},{"FirstName":"First Name 2","LastName":"Last Name 2","Department":{"DepartmentID":2,"DepartmentName":"Department Name 2"}},{"FirstName":"First Name 3","LastName":"Last Name 3","Department":{"DepartmentID":3,"DepartmentName":"Department Name 3"}},{"FirstName":"First Name 4","LastName":"Last Name 4","Department":{"DepartmentID":4,"DepartmentName":"Department Name 4"}},{"FirstName":"First Name 5","LastName":"Last Name 5","Department":{"DepartmentID":5,"DepartmentName":"Department Name 5"}}]

2. I'm using ICSharpCode.SharpZipLib to compress the string using the following routine

public static string CompressString(string inflatedString)
        {
            string result = string.Empty;
            byte[] buffer = new byte[4096];
            byte[] stringButes = new System.Text.UTF8Encoding().GetBytes(inflatedString);
            try
            {
                using (MemoryStream ms = new MemoryStream())
                {
                    using (ZipOutputStream zs = new ZipOutputStream(ms))
                    {
                        zs.SetLevel (9);
                        ZipEntry entry = new ZipEntry("Compress.txt");
                        zs.PutNextEntry(entry);
                        using (MemoryStream msSource = new MemoryStream(stringButes))
                        {
                            StreamUtils.Copy(msSource, zs, buffer);
                        }
                    }
                    byte[] compressedStringBytes = ms.ToArray();
                    
                    StringBuilder compressedStringBuilder = new StringBuilder(compressedStringBytes.Length);
                    foreach (byte charItem in compressedStringBytes)
                    {
                        compressedStringBuilder.Append((char)charItem);
                    }

                    result = compressedStringBuilder.ToString();
                }
                
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            return result;
        }

3. And using the following routine for decompression

public static string DeCompressString(string compressedString)
        {
            string result = string.Empty;
            StringBuilder defaltedString = new StringBuilder();
            byte[] compressedStringBytes = new byte[compressedString.Length];
            for (int foo = 0; foo < compressedString.Length; foo++)
            {
                compressedStringBytes[foo] = (byte)compressedString[foo];
            }

            byte[] data = null;
            try
            {
                using (MemoryStream ms = new MemoryStream(compressedStringBytes))
                {
                    using (ZipInputStream zs = new ZipInputStream(ms))
                    {
                        ZipEntry entry = null;
                        while((entry = zs.GetNextEntry()) != null)
                        {
                            data = new byte[entry.Size];
                            using (MemoryStream msDest = new MemoryStream(data))
                            {
                                using (StreamWriter writer = new StreamWriter(msDest))
                                {
                                    if (zs.Read(data, 0, data.Length) > 0)
                                    {
                                        writer.Write(data);
                                    }
                                }
                            }
                        }
                    }
                    result = new System.Text.UTF8Encoding().GetString(data, 0, data.Length);                    

                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            return result;
        }

Now the problem is when the above stated JSON string gets compressed (using the above stated routine)and using the same compressed string when I decompress (using the above stated routine) I'm getting the following decompressed string, which clearly are not same..

System.Byte[]:"First Name 0","LastName":"Last Name 0","Department":{"DepartmentID":0,"DepartmentName":"Department Name 0"}},{"FirstName":"First Name 1","LastName":"Last Name 1","Department":{"DepartmentID":1,"DepartmentName":"Department Name 1"}},{"FirstName":"First Name 2","LastName":"Last Name 2","Department":{"DepartmentID":2,"DepartmentName":"Department Name 2"}},{"FirstName":"First Name 3","LastName":"Last Name 3","Department":{"DepartmentID":3,"DepartmentName":"Department Name 3"}},{"FirstName":"First Name 4","LastName":"Last Name 4","Department":{"DepartmentID":4,"DepartmentName":"Department Name 4"}},{"FirstName":"First Name 5","LastName":"Last Name 5","Department":{"DepartmentID":5,"DepartmentName":"Department Name 5"}}]

You can see the first few characters of the string is missing and a new System.Byte[] is included instead.

I'm constantly trying to figure it out, but till not without any luck..
It will be great, if someone puts some light, whether Im missing something or not...