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by: Craig Buchanan |
last post by:
when i try to open a file that has been compressed with GZipStream (source
from microsoft's 101 Samples for Visual Studio 2005), i get an "invalid
archive" message from winzip, zipgenius and xp's compressed folder app.
using DeflateStream resulted in the same error.
am i missing something simple?
thanks,
Craig Buchanan
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by: Robinson |
last post by:
I'm trying to work out how to decompress a GZipStream. I'm not sure how to
allocate the destination buffer, given that I cannot query the stream to
find out the total decompressed size of the item. A hack here
http://www.geekpedia.com/tutorial191_Unzipping-compressed-files-using-GZipStream.html
shows that you can get the last 4 bytes of the stream and convert it into an
integer "size". But this doesn't seem right to me. I could also...
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by: prince.matt |
last post by:
Hi,
I am using GZipStream to compress a simple text file approx 24MB in
size. I am finding that the destination "compressed" file is several
MB larger than the source file (31MB). The code is as follows:
Dim sourcefile As FileStream = File.OpenRead(inFileName)
Dim destFile As FileStream = File.Open(outFilename,
FileMode.Create, FileAccess.Write)
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by: hakan.thornqvist |
last post by:
I am using GZipStream for compression, and the size and contents of
the compressed byte array differs from time to time, using the same
source.
byte uncompressed = Enc.GetBytes(xmlNode.OuterXml);
byte compressed = compress(uncompressed);
private byte compress(byte uncompressed)
{
MemoryStream ms = new MemoryStream();
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by: sedwick |
last post by:
I'm using .NET 2.0.50727 in VS 2005 Pro, ENU Service Pack 1 (KB926601). I've been experimenting with the System.IO.Compression classes GZipStream and DeflateStream, and I found it interesting to note that they'll create different-sized compressed files depending on the procedure you use to take in the source file's data. With one, almost every file I feed them for compression ends up significantly bigger. That code is below, almost verbatim...
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by: Arnie |
last post by:
Folks,
The GZipStream class in .NET is throwing an exception during an OS
unseal/power up (first boot experience). The .NET system is fully up as
other apps seem to run fine.
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by: DR |
last post by:
Why is its substantialy slower to load 50GB of gzipped file (20GB gzipped
file) then loading 50GB unzipped data? im using
System.IO.Compression.GZipStream and its not maxing out the cpu while
loading the gzip data! Im using the default buffer of the stream that i open
on the 20GB gzipped file and pass it into the GZipStream ctor. then
System.IO.Compression.GZipStream takes an hour! when just loading 50GB file
of data takes a few minutes!
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by: DR |
last post by:
Why is its substantialy slower to load 50GB of gzipped file (20GB gzipped
file) then loading 50GB unzipped data? im using
System.IO.Compression.GZipStream and its not maxing out the cpu while
loading the gzip data! Im using the default buffer of the stream that i open
on the 20GB gzipped file and pass it into the GZipStream ctor. then
System.IO.Compression.GZipStream takes an hour! when just loading 50GB file
of data takes a few minutes!
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by: =?Utf-8?B?TWFydGluIE1hZHJlemE=?= |
last post by:
Hi,
i've got problems with CryptoStream and GZipStream. Someone tried that? Or
got any idea why this wont work?
i tried every combination, first i used CryptoStream, after that GZipStream.
Or first i create a file with GZipStream and crypt that file. But become back
the orginal is impossible...
I hope anyone got an idea how this could work.
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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