HttpWebRequest And System.IO.Stream?
Sep 29, 2010Dim request As HttpWebRequest = DirectCast(HttpWebRequest.Create(url), HttpWebRequest)
Using stream As System.IO.Stream = request.GetResponse().GetResponseStream()
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.net - Stream Connection Using Httpwebrequest?
Apr 3, 2012I have created a httpwebrequest connection to a streaming API after trying a tTCPClient which just never ended up working. My concern is whether my code is correct and that I am actually reading in new data and that the connection is maintained. Initially I had been reading into a buffer and just loaded everything into a file after max size, but figured it would be simpler to read a line, since each entry was being sent delimited by line feeds.
rStream = webrequest.GetResponse().GetResponseStream
rStream = New GZipStream(rStream, CompressionMode.Decompress)
If rStream.CanRead then
[code]....
It looks like I am continuously reading and not sure if I am reading redundant data here. Also another question is that if I were to use a thread to appendToFile, would that maintain the connection to the stream?
Error 4 'AllowReadStreamBuffering' Is Not A Member Of 'System.Net.HttpWebRequest'
Jun 29, 2010I must be missing something obvious. I have a class
[Code]....
VS 2010 Post Data With System.Net.HTTPWebRequest?
Jun 30, 2010vbnet
Public Class zWrapper
#Region " Variable Declaration "
Private _AllowRedirects = True, _UseGZIP As Boolean = True
[Code]....
It works fine for GET requests, but when I try a POST, it errors: Quote:
A first chance exception of type 'System.NullReferenceException' occurred in WindowsApplication1.exe
Request Error: Object reference not set to an instance of an object.
Cannot Convert To 'System.IO.Stream
Jul 31, 2011I am trying to convert the image from 'System.Drawing.Bitmap' to 'System.IO.Stream', but i am getting an error.
the error is: Value of type 'System.Drawing.Bitmap' cannot be converted to 'System.IO.Stream'.[code]...
'Peek Is Not A Member Of System.IO.Stream'?
May 4, 2012Dim OpenFileText As New OpenFileDialog()
Dim InStream As Stream = Nothing
OpenFileText.Filter = "txt files (*.txt)|*.txt"
[Code]...
I've been reading the MSDN Library and I need to use the StreamReader.Peek Method to check a text file while a I parse it.
When I try to use the Peek Method, I get an error saying , "Peek is not a member of System.IO.Stream."
I don't understand why it is happening because I am following the examples on MSDN, and I even checked other sources and it seems like I am doing everything correct. I am hoping it is just something small that I have missed.
I am also importing System, System.IO, and System.Text.
.net Capture System Audio To Stream?
Jun 21, 2011Is it possible to capture all/any audio played by a PC into a system.io.stream, so that it can then be run through speech recognition (System.Speech.Recognition.SpeechRecognitionEngine)?Essentially I'm looking to pefrom speech recognition on any audio on the client PC, google seems to suggest that capturing a stream like this can be done using Microsoft.DirectX.DirectSound, however I cannot honestly determine how.
View 1 RepliesC# - Read From A Url Into A System.IO.Stream Object?
Aug 3, 2009I am attempting to read from a url into a System.IO.Stream object. I tried to use
Dim stream as Stream = New FileStream(msgURL, FileMode.Open)
but I get an error that URI formats are not supported with FileStream objects. Is there some method I can use that inherits from System.IO.Stream that is able to read from a URL?
Html - Httpwebrequest - Obtain Form Element Id's / Names During An Httpwebrequest?
Dec 28, 2011What I would like to know is how to obtain form input elements during an httpwebrequest?
[Code]...
Is it possible to obtain these input elements during an httpwebrequest without having to view the html code?
.net - Generate A PDF File As System.net.mail.attachment Using Memory Stream?
Nov 25, 2011I have a function that accepts a string and generates an email attachment based on that string. It works fine for html pages, text documents, and so forth but I can not get it to generate a PDF file.
Code:
Public Sub SendMail _
( _
ByVal strFrom As String _
[code]......
If I save the file attachment as Whatever.PDF i get the error that it was not encoded properly.I am using datadynamics active reports PDF exporter to generate the PDF
dim pdf as new datadynamics.activereports.export.pdf.pdfexport
sendmail("from@", "to@", "test", "test", pdf.tostring, "pdf.pdf")
I think the problem is I am converting the PDF to a string, and then trying to convert it back to a PDF and attach it to the email but I am not 100% sure.
Stream Read Return Length 0 While Stream Is Open And Has Valid Data In It?
May 25, 2012in an winForm app in VS2010 win 7 compiling to x86, I try to do what Alvas.Audio seems to work. See (c# ex: [URL] for reference.
Dim data() As Byte = wr.ReadData(second * i, second)
The result give me data.length()=0. I do not have any exception, I can read format from it and whatever reader I use I got this problem.EDIT : After some tests, it seems like the uncompressed file I create in the first step (in PCM format, with .wav extension) can not be recognized by the Alvas.audio library for the second step. I must miss something around Audio file markups or something alike.
Here is the code that might be the source (basically this is step 1):
Dim functOut As String = String.Empty
Dim wr As Alvas.Audio.IAudioReader = Nothing
Dim fs As IO.FileStream = Nothing
[code]....
How can I write the resulted stream to be sure I can read it again later?
VS 2010 Make Shoutcast Stream Info Like The Stream Name
May 5, 2011Im making a desktop player for a online web radio, and for the program I wanna make it show all the stream info. Like the stream name, and such. However I dont know how to do this? I looked everywhere
The server url is setup like this "[URL]" And it has all the stream info and that there. So is there a way I can get the info from there onto like say a label? Live updates btw.
Crypto Stream To Memory Stream?
Nov 22, 2011I have a problem with the cryptostream, if i write the stream to a memorystream the memory that the stream used is still alocated and i have no way of unalocating it.what am i missingdoing wrong? im using-using on the streams,readers and crypto stuffs so the framework should shut them all down right? i tryed calling .close and .dispose but nothing ,in fact i moved it all over I have provided the sub that im using for the encrytion im in .net 4.5 so there is a lil async stuff but i know thats not the problem coz i moved this code out of my main app(.net 4) for testing to see if i could fix the problem.[code...]
View 12 RepliesHow To Use Httpwebrequest
Mar 21, 2010I have no idea how to use httpwebrequest anyone can show me an example of code to do the following
1.Navigate to website with cookies
2.use this cookies and website referrer to download file with direct url (url...)
.net - Cannot Use Httpwebrequest With Listbox
Jan 4, 2011I am facing a strange problem with listbox. I need to scrab whois information. I used the following code to get source code of the whois query. It works fine if I use a textbox. But I need to use this for multiple url and therefore need to use lixtbox to loop through url list. Unfortunately when I use listbox1.selecteditem or listbox1.text it does not work. But this same code works with webbrowser.
Dim request As System.Net.HttpWebRequest = System.Net.HttpWebRequest.Create("http://www.networksolutions.com/whois/results.jsp?domain=" & listbox1.selecteditem)
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.0.3705)"
[code]....
C# - Specify Range >2GB For HttpWebRequest In .NET 3.5?
Jul 4, 2011I'm building this class to download files in parts/sections/segments. In .NET 4.0, I can use this code to specify the range to download from
long startPos = int.MaxValue+1;
HttpWebRequest.AddRange(startPos);
and it works because there is a long overload for the AddRange method. When I looked up the .NET 3.5 version, I realised the AddRange() method allows using int only. The possible workaround would be using the AddRange(string, int) or AddRange(string, int, int) methods. Since the class will have to work in .NET 3.5, I'll have to go with the string specification but unfortunately I can't seem to find any sample code that shows how to specify ranges using this procedure in .NET 3.5. Can anyone show be how to do this?As the first code sample I wrote shows, I would like to specify a range of type long instead of int. Using type int allows requesting for byte ranges only up to 2GB but long allows requesting for byte ranges beyong 2GB.
The question therefore is: How do I specify byte ranges of 2GB or higher on HttpWebRequest in .NET 3.5?
How To Control Httpwebrequest
Sep 19, 2008Here is my code:
Code:
Public Function getHtml(ByVal url As String) As String
dim objrequest as httpwebrequest
dim objresponse as httpwebresponse
Try
[Code]...
My problem is: for some url that function takes a long time. So, i just want to cancel the response after a given time. I tried with a timer control but that is not working. What to do? How to modify this code so this function will return result within a given time whether httpwebresponse completed or not?
HttpWebRequest Fileupload?
Dec 8, 2010i allways get an Out of Mem Exception and the usage of my memory is growing and growing in the taskmanager when i execute follwowing source code:
Imports System.Net
Imports System.Text
Imports System.IO
[code].....
Httpwebrequest With If Statement?
Oct 6, 2009how to write a httpwebrequest, however i'm unsure of how to write it with a if...statement. I have a file that I need to download, however it ususally doesn't get posted until sometime Tuesday afternoon, so what I need to do is have the program continually check say once about every 5 minutes until the file has been posted and then download it.I'm presumming using an if...statement is the best way to accomplish this, basically if true(file exists) then proceed, else wait 5 minutes and rerun process.
View 7 RepliesLog Into Router With HttpWebRequest?
Jun 27, 2012How to successfully log into a DSL-Router (Model: Speedport w504v Type A).I wrote a function usinig HttpWebRequest and HttpWebResponse. So far this function is not finished and is only for finding out the right login process.[cde]...
View 1 RepliesLogging In 0 Httpwebrequest
Mar 22, 2011can any one see any thing wrong with my code. I swear it did work once or twice. * code now removed as updated below
View 2 RepliesUse A If Then Statement With Httpwebrequest?
Oct 5, 2009use a If then Statement with Httpwebrequest? Let me explain my senario. I have a file that needs to be downloaded from a web site once it is posted. Currently one of our staff manually goes out to the web site multiple times to check to see if the file has been posted, they then download the file, extract it's contents and use some of the info for reports that must be sent out the same day.
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Using Credentials With HttpWebRequest?
Apr 19, 2010I am trying to write a program that goes to a webpage and gets the html and puts it into a mshtml document but I always get an error. I know this example works when the webpage doesn't require Credentials. By the way i'm using vb 2008 express.
Dim theCredential As New System.Net.NetworkCredential("username", "password")
Dim Doc As mshtml.IHTMLDocument2
[code]....
XML Query Via Httpwebrequest
Jun 11, 2010I'm pretty sure that I need to use Httpwebrequest "POST" method for this although Im unsure as to the exact syntax to use. I need to do a xml query to a remote web site, something like <node>" "</node, <price>" "</price> and then collect that data and import it directly into a sql table. Any suggestions or directions?
View 4 RepliesHttpWebRequest And HttpWebResponse Manipulation?
Apr 6, 2010I 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".
View 2 Replies.net - How To View HTTPWebRequest Reponse
May 24, 2011Dim s As HttpWebRequest
Dim username= "username=" + HttpUtility.UrlEncode("username")
Dim message = "message=" + HttpUtility.UrlEncode("message")
Dim sep = "&"
Dim sb As New StringBuilder()
[Code]...
How do i reponse.write the result to the screen? I get errors like..Value of type 'System.Net.WebResponse' cannot be converted to 'String'.
405 - Method Not Allowed HttpWebRequest
Apr 2, 2012I have a problem when trying to send a POST request. The sending method looks like this:
Public Sub SendXML(ByVal file As String)
Dim reader As New StreamReader(file)
Dim data As String = reader.ReadToEnd()
[Code]....
Now looking at this I suspected that it was due to the fact that the server does not accept POST messages. But some other reading suggests that the the URI [URL] has been generated with a proxy and should be /Request so the line should read POST /Request HTTP/1.1
So what would be the common reason for this? And if it is a proxy problem, how is it sorted?
As asked below, I have created a new question for the more specific request. Changing absolute URI to relative in HTTP POST header
Can't Login Website Using Httpwebrequest
Jan 28, 2012I am a newb to vb.net(visual studio 2008).i am trying to make an app using vb.net which can be used to login to a website and browse that website without using webbrowser(i dont want to use webbrowser of vb.net).i got a code for this from net ;I have made a temporary login webpage using php and mysql in my computer(its working properly).[code]...
View 2 RepliesDifferences Between HttpWebRequest And WebClient?
Jun 9, 2010differences between HttpWebRequest and WebClient and why I should use either.
View 1 RepliesDownload A File Using An HTTPWebRequest?
Nov 28, 2010I want to download a file using an HTTPWebRequest. I found sample code, but it seems a bit outdated. What i have:
Imports System.IO
Imports System.Net
Imports System.Text[code].....
It seems that WebRequestFactory doesn't exist. Is there a better way to do this? Or how can i fix it?