Exceptions using htmlagilitypack - vb.net

i am working with html-agility-pack in vb.net and facing a problem. my project was working fine 2 days ago, but now it is generating some kind of exceptions . i am wondering that what is happening . can anyone please help. screen shots are attached thanks

i resolved the problem. thanks everyone for valueable commenting. the proble was due to proxy settings in my default browser. code is totally right.

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httpclient not working anywhere except in windows phone

I followed the [ToDoRest][1] example in github, it works there but it don't working my app I don't understand what I am missing.
Things look same in both projects but still it's not working in mine please help me I am looking into this from last 3 days without any luck. Please help me.
I figured it out, I need to put .ConfigureAwait(false) at the end each call then it works in IOS and android

What is csWinFormsBlackApp?

Does anybody know what is csWinFormsBlackApp?
When I try to install software which is published and try to open the soft it gives csWinFormsBlackApp stopped working error.
very sorry for late response because of health matters. Didn't meant to be rude.
I think it is some kind of error which i solved by correctin connection strings adress using ./SQLEXPRESS instead of the one vs uses from the beginning..
It's all working now.
Thanks for your help and sorry again for late answer.
I passed a fairly simple surgery and recovered now :) TG..
See you again.
Sertac

My Ftp Custom Provider is not invoked

I've gone through all steps in tutorial on IIS Website, how create my own custom Ftp Logging/Authentication Provider. Unfortunately, it doesn't work still. What can I do?
I've been struggling with this problem for past few days. And I finally got it.
Sometimes it doesn't work at all. Sometimes, it works for a while and suddenly, after few changes in code [or somewhere else] it stops and you can't find out what happened [that was in my case].
To solve my problem [and, I believe, many others] helps me this article:
http://blogs.msdn.com/b/robert_mcmurray/archive/2012/08/28/troubleshooting-custom-ftp-providers-with-etw.aspx
It's pretty hard to google, but value of tool from article is enormous.
I hope you can find and solve your problem with it, too.

No Captcha in DNN Enquiry Form

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Anyone else running into this issue? This looks to be a very basic module, and I see it being used everywhere online. I don't think I'm messing up, but please correct me if I'm wrong.
I can't get the form to process without the captcha requirement, and this is really putting me behind on moving forward. I would appreciate any tips or advice you may have to offer.
I just upgraded to DNN v5.6.2, uninstalled the Enquiry, reinstalled it, and now everything works well. Awesomeness! :)

ZbarSDK errors (Screenshot included)

I keep getting errors trying to implement the ZBarSDK. I have previously done so without any problem but now it's making me go nuts :)
Anyone with any clue of what is going on, is welcome to answer..
Thanks in advance,
Lewion
Ensure all of the required Frameworks are added to your Project.