Looking for workable zip example.

[Patrick]

Hi,

I red all documentation and all forum's threads and didn't find a complete workable example that compress/decompress a stream . Every founded examples did not work well. Is it possible to have a complete example closer to a cut and paste?

Regards,

I put my code here. It compresses but the decompression is not functionnal:

Public Class Class1

    Dim msCompress As Stream

    Public Function Compression(arg As String) As String
        Dim encoding As New System.Text.UTF8Encoding()
        Dim B() As Byte = encoding.GetBytes(arg)
        msCompress = New MemoryStream()

        Dim method As ZipCompression = DirectCast([Enum].Parse(GetType(ZipCompression), ZipCompression.Deflate64, False), ZipCompression)
        Dim zipOut As New ZipOutputStream(msCompress, method)
        Dim sWriter As New StreamWriter(zipOut)

        sWriter.Write(B)
        sWriter.Flush()

        Return ("Compress: " & zipOut.CompressedSize.ToString & ", Uncompress:" & zipOut.UncompressedSize.ToString)

    End Function

    Public Function Decompression(arg As String) As String
        Dim encoding As New System.Text.UTF8Encoding()
        msCompress.Position = 0
        Dim inputStream As New ZipInputStream(msCompress, False)
        Dim s As String
        Dim Reader As New StreamReader(inputStream.BaseStream, encoding)
        s = Reader.ReadToEnd()

        Return s
    End Function
End Class

[Tina Stancheva]

Hello Patrick,

I attached a sample solution demonstrating how compress and decompress a string. I hope it will get you started. Let me know if it helps or if I can further assist you.

All the best,
Tina Stancheva
the Telerik team

[Patrick]

Thanks a lot!

[Dogan]

hi,

 

how to Compress/Decompress object list

[Nikolay Demirev]

Hello Dogan,

You could serialize the objects of the list and compress them. After that to decompress them and deserialize them. Here you could read about serialization. After the serialization the compressing is just the same as in the sample project Tina sent to you.

I hope this helps.

Regards,
Nikolay Demirev
Telerik