Visual Basic

JSON web service conncetion using vb-scrpit

15-Mar-12 9:44

6rtury wrote:
I guess my question is what could be happening

Without code, we would also have to guess. Mine would be a formatting-problem, a wrong interpretation of the decimal-separator.

Bastard Programmer from Hell Suspicious | :suss:

haidernitc14-Mar-12 0:31

haidernitc

14-Mar-12 0:31

I am new to vb and need help in establishing a web service application(JSON) connection using VB.

any suggestion and help is highly valuable for me.

Eddy Vluggen14-Mar-12 8:06

14-Mar-12 8:06

haidernitc wrote:
<layer>any suggestion and help is highly valuable for me.

There's an example here[^]. They're using XML, but shouldn't be too hard to replace that with JSON.

Bastard Programmer from Hell Suspicious | :suss:

haidernitc14-Mar-12 18:32

haidernitc

14-Mar-12 18:32

thanks for your reply but unfortunately the link is dead.
please suggest me a code either of any language which can use for connecting a web service.

my application is developed in visual basics and need to send and get the values from server.

Eddy Vluggen15-Mar-12 9:41

15-Mar-12 9:41

haidernitc wrote:
please suggest me a code either of any language which can use for connecting a web service.

Using a Web Service in VB.NET[^]

Bastard Programmer from Hell Suspicious | :suss:

Stream reading embedded tar.gz files using SharpZipLib

Bernhard Hiller14-Mar-12 20:57

Bernhard Hiller

14-Mar-12 20:57

Try this one:
Consuming a Json WebService from a C# Application[^]
Migrating that to VB.Net should be easy.

jwidhalm13-Mar-12 15:56

jwidhalm

13-Mar-12 15:56

Hello

I've been looking for some help with regard to using the ICSharpCode.SharpZipLib.GZip library to stream read embedded gz files (i.e. File1.tar.gz has a.tar.gz, b.tar.gz, etc). I can use this library to successfully read .gz files which do not contain embedded .gz files but it's been difficult finding a solution to read embedded files. The following is a snippet of what I currently have. Any ideas or suggestions would be appreciated.

For Each fi As FileInfo In di.GetFiles("*.gz")

  fullPath = dirpath + fi.ToString

  Dim gzips As GZipInputStream
  gzips = New GZipInputStream(File.OpenRead(fullPath))
  reader = New StreamReader(gzips)

  Do While Not readLine Is Nothing

    '---- work on readLine



    readLine = reader.ReadLine

  Loop

Re: Stream reading embedded tar.gz files using SharpZipLib

Eddy Vluggen14-Mar-12 7:59

Simple Way to Encrypt/Decrypt Text or String

14-Mar-12 7:59

Why the StreamReader?

Dim zipInStream as ZipInputStream = new ZipInputStream(fileStreamIn)
Dim entry as ZipEntry = zipInStream.GetNextEntry()

Taken from this[^] CodeProject article Smile | :)

Bastard Programmer from Hell Suspicious | :suss:

Brandon-X1200013-Mar-12 3:02

Brandon-X12000

13-Mar-12 3:02

Hello people,

I wondering how you could encrypt a string a text in a textbox in 128-bit AES and also 256-bit AES (if applicable), and be able to de-crypt it (like binary code converting). It would also help if it was a few short lines of code or short as possible (if applicable).

Regards
Brandon T. H.

Re: Simple Way to Encrypt/Decrypt Text or String

Richard MacCutchan13-Mar-12 6:13

Richard MacCutchan

13-Mar-12 6:13

Brandon T. H. wrote:
It would also help if it was a few short lines of code or short as possible (if applicable).

In a Microsoft product? But seriously, there are lots of links to .NET encryption around, including .NET Encryption Simplified[^] in the CodeProject Articles section.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: Simple Way to Encrypt/Decrypt Text or String

Brandon-X1200013-Mar-12 9:58

Brandon-X12000

13-Mar-12 9:58

Thanks a bunch. Smile | :)

How to use two different versions of same dll in vb.net web application?

Affan Toor13-Mar-12 2:28

Affan Toor

13-Mar-12 2:28

Hi,

I want to load and use two different versions of same dll in my project. only solution i could think of is to use same dll with different namespace, but I cannot change the dll since its third party. so i am stuck here...is it even possible? if yes then how?

Not sure if this is the right forum, since i want to achieve this in vb.net application so posted here. any kind of help is appreciated!

Regards,
Affan Toor

Re: How to use two different versions of same dll in vb.net web application?

Dave Kreskowiak13-Mar-12 2:37

Dave Kreskowiak

13-Mar-12 2:37

Are these COM-based, normal library or .NET .DLL's??

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: How to use two different versions of same dll in vb.net web application?

Affan Toor13-Mar-12 19:00

Affan Toor

13-Mar-12 19:00

Thanks for reply.
these are .NET DLLs. basically our organization are shifting from an older version of third party API to its latest version. and we want to make this transition smooth, we want to use both for a while and gradually replace the functionality from older version to new version.

Regards,
Affan Ahmad Toor

Re: How to use two different versions of same dll in vb.net web application?

Sentenryu13-Mar-12 3:23

Sentenryu

13-Mar-12 3:23

why you want this? i've a generic solution, but will be very painstaking... so, depending on why you want that, we can delivery a simple solution...

Re: How to use two different versions of same dll in vb.net web application?

Affan Toor13-Mar-12 19:02

Affan Toor

13-Mar-12 19:02

thanks for reply.
our organization are shifting from an older version of third party API to its latest version. and we want to make this transition smooth, we want to use both for a while and gradually replace the functionality from older version to new version. if you have any alternative solution then please share.

Regards,
Affan Ahmad Toor

Re: How to use two different versions of same dll in vb.net web application?

Sentenryu14-Mar-12 1:50

Sentenryu

14-Mar-12 1:50

i don't know if this will work on VB, but i've found this workaround:

http://blogs.msdn.com/b/abhinaba/archive/2005/11/30/498278.aspx[^]

also, this post from stackOverflow can be useful: http://stackoverflow.com/questions/5916855/using-multiple-versions-of-the-same-dll[^]

also, i've found that in SharpDevelop you could simple select the reference in the solution explorer, click properties and set a alias, this works for VB and C#, i can't verify that this is true for visual studio (i don't have it here), but its a good start point

if nothing works, the solution is to create 2 more class library projects and warp each version in a diferent namespace... too much work Cry | :((

EDIT: i haven't managed to reference the alias defined in SharpDevelop into the code, so, i think you will be forced to warp the dlls...

I'm brazilian and english (well, human languages in general) aren't my best skill, so, sorry by my english. (if you want we can speak in C# or VB.Net =p)

Re: How to use two different versions of same dll in vb.net web application?

ZurdoDev16-Mar-12 6:28

ZurdoDev

16-Mar-12 6:28

That is what the Reflection namespace is for in .Net. You'll have to load the dll's dynamically. I don't think it is worth it though.

There are only 10 types of people in the world, those who understand binary and those who don't.

Shared Variables and Threading Issue

D3STROYRofWRLDS12-Mar-12 10:02

D3STROYRofWRLDS

12-Mar-12 10:02

Hey All,

So I am currently attempting to wrap my head around create multi-threaded programs and I am currently running into an issue when using a Shared variable across multiple threads.

The program is structured as follows:

Public Shared IsActive as Boolean

Main Thread = GUI
Sets the Value of IsActive through a Button Control

Two Worker Threads
Both threads are while loops that read the IsActive Boolean

Ex:
While IsActive = True
Do Work
End While

However when I change the value of IsActive from the Main Thread it causes the worker threads to stop (ThreadState = 16).

I have been reading that I have to synchronize/lock shared resources and have tried SyncLock and Monitor methods without success (it is entirely possible I am not using the above correctly, so If someone could provide proper examples for the above situation using the mentioned methods please share them).

Thanks a bunch for any and all help, much appreciated!

If further code is needed let me know.

Thanks!

Dave Kreskowiak12-Mar-12 10:12

Dave Kreskowiak

12-Mar-12 10:12

If I read your post correctly, you declare a variable in your UI code (isActive) and set it to True. Then you start two threads that both look at isActive and run until isActive if False. When you set isActive to False, both threads stop.

This is the expected behavior. Or am I missing something? What are you expecting to happen?

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Luc Pattyn12-Mar-12 10:44

Luc Pattyn

12-Mar-12 10:44

See, that is what you get from a poor choice of an identifier name, what you have implemented is a "PleaseContinue" flag: as soon as you set it false, the worker threads have nothing left to do, and terminate.

If OTOH you want a "TemporarilySuspended" flag (I switched polarity here!), something you could set true and false repetitively and your worker threads would obey, then you need your worker threads to wait for it to become true again. An AutoResetEvent may be a good choice then.

Anyway, IsActive is a bad name, as it does not describe a state, it is intended to give a command.

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

D3STROYRofWRLDS12-Mar-12 10:58

D3STROYRofWRLDS

12-Mar-12 10:58

Yes correct, in my initial post I realize that the threads were behaving exactly as they should and just ended when the variable broke the workers out of the Wloop.

Basically, I want the two workers threads to constantly be running, and then when the shared variable is set to true they then start doing work. Then when the user clicks the button again the worker threads "pause" and wait for the next time the variable is set to True.

The "IsActive" name was just an abstraction. Smile | :)

I use a much more detailed name in my actual code.

In regard to the "TemporarilySuspended" flag and AutoResetEvent, could you provide some examples, would love to handle that properly.

Thanks a bunch for the help!!