Questions on Telerik Document Processing Forum

3 answers

209 views

Filename in ZipPackageEntry not Contains german umlauts

Hi,

i got a question using the ZipLibrary.

We got a .zip file with about 20 files zipped.

Some of the filenames contains german umlauts like ä,ö,ü ....

Now, when using the ziplibrary the filenames which got german umlauts are incorrect.

Here is the function to get the files.

Dim fname As String = System.IO.Path.Combine(System.Configuration.ConfigurationManager.AppSettings("GlobalUploadPath"), Filename)

Dim fs As New FileStream(fname, FileMode.Open, FileAccess.Read)

Try

Using package = ZipPackage.Open(fs)

Dim allEntries As List(Of ZipPackageEntry) = package.ZipPackageEntries

For Each entry As ZipPackageEntry In allEntries

Dim filename As String = System.IO.Path.GetFileNameWithoutExtension(entry.FileNameInZip.ToLower)

-->> wrong filenames in entry.FileNameInZip

If tableList.Contains(filename) Then

' Reading the Data

End If

Next

End Using

Any hint's ?

thank you

ZipLibrary

answered on 09 Aug 2013

1 answer

142 views

Stream compression not working

Hi,

we have requirement to generate zip file from list of images and allow it to download in Silverlight.
All images are stored on remote machine(\\192.168.1.7\\abc\\\abc\year\month\1234\1234.jpg).
so I have implemented functionality to get the list of images and passed it to wcf service as an argument
and it returns list of byte array.
I have implemented the below code to create the zip file from list of stream.

busyIndicator.IsBusy = true;

if (ListPic.Count > 0)

{

//Save zip File

SaveFileDialog dialog = new SaveFileDialog();

dialog.Filter = "Zip File | *.zip";

bool? dialogResult = dialog.ShowDialog();

if (dialogResult == true)

{

using (ZipPackage zipPackage = ZipPackage.Create(dialog.OpenFile()))

{

foreach (PictureFile pic in ListPic)

{

Stream picStream = new MemoryStream(pic.PictureStream);

zipPackage.AddStream(picStream, System.IO.Path.GetFileName(pic.PictureName),ZipCompression.Deflated,DateTime.Now);

}

busyIndicator.IsBusy = false;

this.DialogResult = false;

}

else

{

busyIndicator.IsBusy = false;

this.DialogResult = false;

}

In above code I have used to deflate compression to compress stream but it always returns the size and compression not works.
Is there any more configuration required for compression to work?

Thanks
Rahul

ZipLibrary

answered on 17 Jul 2013

3 answers

345 views

[Solved] Can ZipPackage zip folders?

Does anyone know if the ZipPackage can accept a folder or set of folders and build a valid zip file from them? I haven't seen any examples or documentation on this.

ZipLibrary

answered on 21 May 2013

5 answers

428 views

Zipping in a memory stream

I am trying to zip files to a memory stream but the stream content is always 0 even if the stream length seem correct.

MemoryStream ms = new MemoryStream();

Telerik.Windows.Zip.ZipPackage z = null;

z = Telerik.Windows.Zip.ZipPackage.Create(ms);
z.Add(fi.FullName);

Data = null;

System.IO.BinaryReader reader = new System.IO.BinaryReader(ms);
Data = new byte[(int)ms.Length];
reader.Read(Data, 0, (int)ms.Length);
ms.Close();

--> Data contains only "0".

Can you pls advise ?

Thanks

Patrick

ZipLibrary

answered on 17 Apr 2013

1 answer

202 views

GZip Support

Hello telerik!

Is GZip supported now?
Thanks,
Tim.

ZipLibrary

answered on 01 Mar 2013

1 answer

156 views

response.end

Hello
is it possible to send a file to the end user without a repsonse.end, that way it would be possible to show a loading panel while the zip is building

ZipLibrary

answered on 01 Mar 2013

1 answer

106 views

Zip files bigger than 4gb

Hi i need to zip files of 10 gb. How can i do it? (i got an exception)

Marcos

ZipLibrary

answered on 04 Feb 2013

1 answer

197 views

How to decompress RAR File?

Hi, could you help me use the ZipPackage to decompress RAR File, can this be realized? Thanks!

ZipLibrary

answered on 10 Oct 2012

2 answers

145 views

[Solved] Error unzipping in WCF

Hello


I'm trying to create a ZIP file from Silverlight with a list of JSON data and compresses well. 
The problem is to receive it in the server because I have no library Telerik receive the Zip to 
extract and process the result. The library I am using is IonicZip to receive the result but 
I get error trying to read the MemoryStream. Is there a library for ASP.net Telerik decompress 
the ZIP file

Code in Silverlight:
MemoryStream memoryStream = new MemoryStream();
ZipCompression method = ZipCompression.Default;
Telerik.Windows.Zip.ZipOutputStream zipOutputStream = new Telerik.Windows.Zip.ZipOutputStream(memoryStream, method);
StreamWriter writer = new StreamWriter(zipOutputStream);
writer.Write(listSave.ToJSON());
writer.Flush();
ServicesClient context = new ServicesClient();
context.SetZipFileAsync( Convert.ToBase64String(memoryStream.ToArray()));

Code in WCF:
public void SetZipFile(string _parameter)
     {
         if (!string.IsNullOrWhiteSpace(_parameter))
         {
             var info = Convert.FromBase64String(_parameter);
             MemoryStream stream = new MemoryStream(info);
             string dataList = string.Empty;
             MemoryStream output = new MemoryStream();
             StreamReader read = new StreamReader(output);
             using (ZipFile zip = ZipFile.Read(stream))
             {
                 ZipEntry item = zip[0];
                 item.Extract(output);
                 output.Seek(0, SeekOrigin.Begin);
                 dataList = read.ReadToEnd();
             }
         }
     }

ZipLibrary

answered on 12 Sep 2012

2 answers

229 views

[Solved] Zip control does not decompress correctly

Hello,

I am trying the ZIP control for silverlight, but i keep having an issue.
I am trying to Compress and Uncompress a stream which is getting read from a WAV file.
the issue is that the size of the stream before compression and after decompression is different. this causes the uncomressed stream to be invalid and therefore not to be played by the basic media element of silverlight.

I am attaching a sample of code to demonstrate the zip and unzip methods that i use.

string wavFilePath = @"C:\1\cheer.wav";

string wavFileNewPath = @"C:\1\cheerNew.wav";

string zipFilePath = @"c:\1\123.zip";

private void btnCompress(object sender, RoutedEventArgs e)

{

FileStream fs = new FileStream(wavFilePath, FileMode.Open);

SizeBefore.Text = fs.Length.ToString();

using (ZipPackage zipFile = ZipPackage.CreateFile(zipFilePath))

{

zipFile.AddStream(fs, "cheer.wav", ZipCompression.Default, DateTime.Now);

zipFile.Close(true);

}

private void btnUncompress(object sender, RoutedEventArgs e)

{

using (ZipPackage zipFile = ZipPackage.OpenFile(zipFilePath, FileAccess.Read))

{

ZipPackageEntry zipEntry = zipFile.ZipPackageEntries[0];

Stream strm = zipEntry.OpenInputStream();

byte[] Bytes = new byte[strm.Length];

strm.Read(Bytes, 0, (int)strm.Length);

using (FileStream fs = new FileStream(wavFileNewPath, FileMode.Create))

{

fs.Write(Bytes, 0, Bytes.Length);

fs.Close();

}

I wanted to also note that I did encounter the decompress example which is online here. but it does not help me since dealing with string will not give me the expected result.

Thank you in advance for nay help about this...

kob490.

ZipLibrary

answered on 13 Jun 2012