HttpWebResponse Not Receiving Anything
Jun 5, 2010
I am having trouble with receiving bytes using HttpWebResponse.I can receive them just fine with WebClient, which I believe is just a wrapper for HttpWebResponse.Anyway, I put together some example code to re-create the situation. [code] If you just paste it into a empty Form1 and hit F5, it will create all controls automatically.I would use WebClient, but I want to get one byte at a time so I can have a detailed progress indicator, and I couldn't find any way to do that with WebClient.WebClient SendDataAsync has some serious problems where it only fires its progress update events like 3 times.Also, you will see if you press the button, it takes like 20 seconds of doing absolutely nothing, and then all of a sudden it downloads all the data in like a split second.If you press the button again and again, it only takes a split second.But the first time you push it, it takes for ever.Does anyone know why and how to fix that? [code] for the sake of all that is good and holy, don't use ACCESS, EXCEL, or a TEXT FILE as a database.If you want your program to use a "local database", without any of the hassle of setting up a MS SQL or MySQL server, just click this link: >>> SQLite <<<
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Mar 8, 2011
i am getting error 401 un authozied, but i am giving correct user name and password of the network user name and password of my system.
i am getting error in this line
HttpWebResponse
loWebResponse = (HttpWebResponse)loHttp.GetResponse();
[code]....
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Apr 6, 2010
I have a program that will register you for a certain website using textboxes and stuff but I have an invisible web browser and it just enters the text into the right spots and clicks the button.I was told that I can get rid of the web browser and do the whole thing faster and easier using "HttpWebRequest and HttpWebResponse".
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Dec 19, 2011
what method should I be using to obtain all the form input elements during an httpwebresponse?I know that posting back to them can be done via editing the response using textbox1.text...but how can I obtain the input values during my request without having to manually go behind the scenes and peek at the html code?
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Jan 6, 2011
I`m working on some XML Https shit things and since i`m getting some Cyrillic characters i need to change the encoding of the HttpWebResponse since i`m only getting "?" i try this:
Dim objResponse As HttpWebResponse = DirectCast(objRequest.GetResponse(), HttpWebResponse)
Try
SR = New StreamReader(objResponse.GetResponseStream())
[code].....
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Jan 26, 2010
I want to read a string that looks exactly like this:
VPSProtocol=2.22
Status=OK
StatusDetail=0000 : The Authorisation was Successful.
[code].....
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Mar 11, 2008
I have a problem to read the binary from HttpWebResponse. The problem occur when the data is less than the buffer i predifine. It will hang in a long time when stream.Read(buffer, 0, buffer.Length) in ReadFully function.
Here is the sample code
Public Sub GetData()
Dim Buffer(1024) As Byte
Dim sHttpData As String
[Code].....
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Sep 20, 2011
I'm currently working on making a database driven app without using SQL and instead using a simplistic web directory to store information.Unfortunately after just beginning I hit a rock wall on creating a login screen. As it works right now, every user has a directory and within that directory is file called "access" which has a password. While I'm aware that's it not secure, that's later to come, but right now I'd just like it to work. But the program uses WebRequest to see whether or not there is a directory under the given username, if there is then the username is considered valid and it moves on to check the password- where I start to have trouble. The password verification uses WebRequest and WebResponse as well, using StreamReader to read the access file. At the moment, the password checker only works once in a single program instance. Otherwise trying to check another login will cause the program to hang or freeze when declaring the WebResponse variable (resp).
This is the password verification code (with URL's removed):
Dim Username As String = My.Settings.usrUsername'The function is in a BackgroundWorker so I use My.Settings to communicate with the UI.
Dim Password As String
Dim usrPassword As String = My.Settings.usrPassword
[code]....
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May 27, 2010
Looking for the best way to determine if a URI exists in VB.NET without downloading the actual content. System.IO.FileExists/My.Computer.FileSystem.FileExists can be used locally to determine if a file exists, is there an equivalent for the Web?
Currently I am using a HttpWebRequest to check URI existance using the ResponseStream. This populates the stream if the target does exist and throws an exception if it doesn't. The function is being expanded to also check for PDF files (typically 5MB +), images, etc and it will be a waste of time/bandwidth to actually populate the content into a stream.
In the case of "Success" (the target does exist) I do not wish to download the file or page, simply to end up with a Boolean which indicates the whether something exists at the end of this URI.
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Dec 13, 2010
I tried using suggestions from other posts for this and still no resolution. When sending a POST request, at times it will just begin to freeze and stall. I set up my code as follows and now basically if I cannot figure out why it is freezing, then itneeds to timeout, handle the exception and restart the function.
For i As Integer = 0 To searchItems.Count - 1
If uri.Scheme = uri.UriSchemeHttps Then
Dim request As HttpWebRequest = HttpWebRequest.Create(url)
[code].....
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Jan 5, 2012
I am stuck in showing images of a requested webpage using Httpwebrequest/httpwebresponse (VB.net) classes. I can make calls to get the target webpage and display the result but it doens't show the images.
What I come to know through googling, is one way to add <base href="target webpage url"> tag in <head> section of resultant strings received through httpwebresponse and the display the modified result. For this purpose someone suggested me using Html Agility Pack.
I did some job but couldn't complete. my code snippet is as under
Dim HWR As HttpWebRequest = TryCast(WebRequest.Create("http://www.example.com"), HttpWebRequest)
Dim RequestWriter As New StreamWriter(HWR.GetRequestStream())
[Code].....
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Apr 15, 2012
I am trying to Make a Simple Login System using files
Dim response As System.Net.HttpWebResponse = request.GetResponse()
If response.StatusCode = HttpStatusCode.NotFound Then
MsgBox("Invalid Login")
Else
My Code Here
But When I Debug it, and test it, it still gives me the 404 error. and not the popup.
Here is My Code
Try
Dim response As HttpWebResponse = request.GetResponse()
MessageBox.Show("Allgood")
Catch ex As WebException
[Code] .....
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Dec 22, 2010
I have been used getelmentbyid in past in vb6 using webbrowser control and internetexplorer instance But in vb.net i tried to fetch webpge using the httpwebresponse Which gives the html / source in the form of sting Is it possible to fetching data by getelementbyid using httpwebresponse and httpwebrequest method ?
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Jun 14, 2010
Trying to POST a username & password to my PHP script at www.example.com/web-service.php which gets that info and echos true or false.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Connect to web-service
Dim hwrRequest As HttpWebRequest = HttpWebRequest.Create("http://www.example.com/web-service.php")
[code]....
Am I missing anything? It stops and throws that error on the line that calls GetResponse()?
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Dec 20, 2011
I already have the code for sending emails to different users but the problem is that if I have 3 users to receive the email - when I send an email to them they will received EACH 3 emails from me.
Please see code below:
Protected Sub btnSendInvite_Click(ByVal sender As Object, ByVal e As
System.Web.UI.ImageClickEventArgs) Handles btnSendInvite.Click
lblError.Text = ""
''lblerrmsg.Text = ""
[Code]...
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Jul 29, 2011
who have helped me so far,But i stumbled upon yet another problem.How do i recieve an email in vb.net of course.
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Mar 23, 2007
Actually my project is based on rfid. The transmitter sends data to the remote reciever that is attached to the pc through USB. Now i have to design a VB.net interface for the recieved data.I dont know how to program and get data from USB and utilize it. I only have to receive the data and not to send.
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Jun 19, 2009
I am trying to receive about 900 packets coming from around 900 different ip's. But for some reason I can't seem to capture them all. The same code in C++ seems to work fine, but when I try to do it and run it through the parser it seems that I only get about 150 - 300 of these packets each time I ask for them.
[Code]....
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Apr 1, 2009
writing a small application on sending a simple text sms like TEXT to the PC and it will get into the database (mySQL) to search for the information on it and reply back the result to the user. how to start on the application and the hardware i need in order to do it.
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Apr 5, 2009
i've been searching for sending and receiving sms code using gsm modem because i can't find any information about it. Is there anybody can give me the code or suitable link for me to get sample code?
Hope i can get response as soon as possible as my tasks need to be completed in a week time.
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Nov 11, 2009
Im woundering how does Receiving/Sending data work in a TCPClient/Server that is connected in the same networkstream.
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Jul 30, 2009
I need to send/receive faxes through my web application, and I am not sure where to begin.Basically, a client clicks a button to send a fax, and records in the database under the client's name when a fax is received.Preferably through an API from a service based fax company... I will be hosting this application on a dedicated server, I don't think they allow using their modems.I am using .NET and VB.
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Sep 27, 2011
i am working on 3rd party chat software, when ever i send data to server i get incorrect buffersize of data. like when i convert that data to hex to matching header for splitting data i got huge lengths data
in the above textbox of image i have got some 0000000000000000000.... with the hex data, how can i get only only original data. The code i have used to receive data is
[Code]...
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Aug 31, 2009
I am doing a project on sending and receiving sms. But I do not know how start. But I have found this website that it teaches how to write the application on sending and receiving sms. What I see is that, it have different classes that is using. I have a dateline to finish my project on this. Here is the link that I am trying to learn from. [URL]
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Nov 14, 2011
i have the following code that i send a command over the network to a Onkyo A/V reciever. I would like to get the feedback from that as well but i can not seem to find a way of doing that. I know the command to send to have it send something back but as for the code below, it only sends out a command and doesnt listen for a return.[code]
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Sep 26, 2011
sample code to receive emails using VS2008 Visual Basic.
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Feb 15, 2012
on a mail client in visual basic, till now i can only send emails using smtp, but i am having troubles finding how to receive themsimple code on how to read/receive emails using visual basic using .Net framework 3.5 will be the best.
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Feb 28, 2010
I have a requirment to recieve and store email text in MS access via an MS Access front end.
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May 29, 2012
I have made a program that send emails but know im trying t receive them. I have looked on google and things but i cant get it.
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Jul 8, 2009
i am working on a project. Part of the project requires me to receive SMSes through VB.net windows application, the following below are codes i have done up till now. I am using a modem to receive the SMS and i am able to connect to it through using of serial port, and also a textbox to display the received SMS but when a SMS is received through my modem but it is not displayed on the textbox, can anyone help me check what is wrong with my codes?
[Code]...
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