Use The Webrequest Webresponse Method To Test For The Existence Of A File?
Apr 2, 2010
I'd like to use the webrequest webresponse method to test for the existence of a file.If the first file is there, then I want to test for the existance of the same filename with -1.htm appended to it. If that filename exists, then test for filname-2.htm This continues until the filename being tested comes back 404 error. At which point, the program does NOT blow up, but the do until loop stops and the code continues. I have to search for a link on each one of the pages found once I have determined how many pages there are.How do I test for a file and not have it blow up? It has to loop and it goes through at least once. this is code I wrote. Right now the page just keeps going and going. IE's little logo on the page tab keep going around in a circle like it's in an endless loop.
Dim fr As System.Net.HttpWebRequest
Dim A As Integer = 1
Dim Count As Integer = 0
[code]....
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Apr 3, 2010
I would like to search an online (internet) database and import the result in my own Windows program. As I understand from reading and searching I first have to do a get from the default (search) page to get the cookies for instance and then do a post providing the filled input fields and adding the previously collected cookies. So far getting the information seems to work but submitting the data back to get the actual search result doesn't seem to work. This is what I have so far: [code]Anybody that can point me in the right direction? I my assumption correct that I first have to do a Get and then Post the correct data back?
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Dec 5, 2011
I made a small console program to login into a website.After figuring out on how to successfully login to the website i ran into a other problem... that problem is visiting the inbox page.The problem is as follow: when i visit the page i get logged out :sMy problem is i think that i don't know how to pass the cookie/session correctly since this is not a post/submit action...When i debug the site and click on the hyperlink i only get get response.
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Sep 16, 2009
i am trying to read website content and selecting some sites from list which contains keyword.But my program is freezing while sending webrequest and getting webresponse.Here is my code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim j As Integer = 0
Dim stream As System.IO.Stream[code]......
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Sep 26, 2011
Why does this code works for the first few then gives timeout on all the rest ? VB removed, resolved like when i run it with say 50 threads, the first few work fine but then the rest after that all time out, i have tryed moving the ones that work to the bottom of the list but they still timeout after the first few are done.
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Mar 13, 2010
I am trying to post data to a form on my website. This works perfect.To expand off for personal use and education, I decided to try and add proxy support. I got a list of some proxies, and did it up. The proxies work, and all is good. But, when I try this with this specific example, I receive 1 of 2 errors depending on the proxy used.(405) Method Not Allowed or (500) Internal Server Error.I realize that both of these are being caused from the proxy side of things, but maybe theres an issue with my code?
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Dec 16, 2010
Dim file As System.IO.FileStream Dim YesNo As Integer YesNo = MsgBox("_missions_recomp.gsc Already exists, do you want to overwrite?", vbYesNo, "Confirm Overwrite?")
[Code]...
Here's the scoop. This is a simple file check, where it will write a file so long as it does not exist,however, if the file already exists, I would like to give the user the option to overwrite the file, or not.
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Apr 29, 2011
WHY can I not check for the existence of a file in the c:windowssystem32 directory? The file IS there and this method still returns false.
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Jun 30, 2011
I'm using Linq to SQL, which generates partial classes and partial methods. You then extend that generated code by implementing your your customizations manually in another partial class. One of the hooks L2S gives you is the ability to implement partial methods that get called when a property changes. For example, if you have a property named "MyProp", then you can implement a partial method like so:
[Code]...
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Sep 15, 2011
I have a service class that i want to unit test. The service calls a repository class method in order to save some data. But before I call the save method, I have a validate method that belongs to the service class under test which validates the properies of the class to be persisted as a parameter to the repository save method.I know that to verify that the repository save method is called, i have to mock the repository class and set up the save method, but how do i verify that the validate method belonging to the service class under test is called when unit testing the method under test since they belong to the same class?
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Dec 7, 2010
I just bought the MCTS Self-Paced Training Kit (Exam 70-561): Microsoft.NET Framework 3.5 - ADO.NET Application Development, and am trying to do the Lab Exercises now. Allready at the first exercise (point 8), where I am supposed to make an "UNIT TEST",[code]
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Apr 20, 2010
I want to write in a csv file that is in an url, but it`s not work look my code:how do i do to write in a file?Dim request2 As Net.WebRequest = Net.WebRequest.Create("http://www.bbb.com/teste_download/dados.csv")
[Code]...
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May 25, 2009
[code]...
and from VB6 project I reference to Test.dll but an error messege was appear A reference to Test.dll file could not be added (If I create VB NET project and reference to file Test.dll it OK )
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May 30, 2012
I have about 50 web requests that are saved on .txt files on my desktop. Is it possible to open and run each of those web request from a folder after my program has been compiled or do they have to be compiled before hand?
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Sep 18, 2008
I am interested in uploading an image to a file field using httpwebrequest or similar however I am stuck on a few things. Would it be a matter of add the file field and the image I would like to upload as the value? I'm not looking for code, I would like to learn how this can be accomplished.
[Code]...
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Sep 13, 2010
I would like to use WebRequest to display information on a file in a remote directory, and then if it satisfies the requirements, I would like to download the file using WebClient.DownloadFile. Can someone give me a quick example of how I would implement this routine?
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Mar 15, 2009
I am trying to write a little application that will help me monitor 8 websites sharing the same IP address.
The code that I am using to query the Status of the Websites is failing to report the correct status of the website; by status of the website, I mean, if it is accessible from any browser.
I got a timer that triggers the following
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
'Create a web request for site.
[Code]....
Basically the webresponse is supposed to turn the textbox5 color to "coral" if the website is up and running or accessible, and turn the textbox5 red if the website is down. What is happening is that all the time the timer is triggered, the text box5 turns coral or "good connection" even if I entered a website that does not exist, Then after 3 minutes I get and exception error that states: The operation has timed out.
Basically, I just need a way to query the site and interpret the response by turning the textbox5 to color red in case the website is inaccessible or down.
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Feb 20, 2010
Im looking for tutorials on httpwebrequest and httpwebresponse. Im actually using chilkatsoft http which makes it quite easier.
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Dec 30, 2009
I've a php script that if the user ahs the privilege to download and image the image is sent to webbrowser but if the user has not the privileges and xml with the info is displayed.[code]
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May 5, 2011
I am currently facing an issue when i get response from webservice, after reading response in response stream i want to load this response stream using xmltextreader. but when Load(xmlTextreaderObj) is called, it raises an exception displaying that "Root Element is Missing". Here is code which am using.
Dim wResp As HttpWebResponse = CType(wReq.GetResponse(), HttpWebResponse)
Dim respStream As StreamReader = New StreamReader(wResp.GetResponseStream())
Dim Resp As String = respStream.ReadToEnd()[code]....
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Dec 18, 2010
I have nine pictures that I need to animate -I need to use the ToString method and a counter to concatenate a file name into a string variable from the Image.FromFile method. Once the counter reaches its maximum value, and the last picture is displayed, the counter should be reset to zero or one depending on how the first image file has been name. Also a static counter variable should be incremented in the time routine. what I have so far -- I know what I have to do; however, I just do not know how to code this properly.. Right now I have this going thru a button procedure but it needs to go through a timer.
[code]....
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Feb 16, 2010
I will try to explain what I need.Let's say that I have a class like this:
Public Class Example1 Public Sub ToBeCalled()
[Code]...
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Aug 3, 2009
I have the following code:
' The yearNode does not exist.
Dim yearNode = From y In App.Data.<year>
Where y.@id = xlParams.Year
[code].....
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Apr 2, 2009
I need to search a Byte array for the existence of another Byte array. The first array is large, about 30,000 bytes and the second varies but is usually between 300 and 500 bytes. I need to know the start position of the second array inside the first. For example if these were the arrays:
Code:
Array 1 Array 2
00
34
00
23 23
00 00
64 64
00 00
41 41
00
45
92
33
I would need to know the start position is 3.
Code:
For x = 0 To UBound(Array1)
If Array1(x) = Array2(0) And Array1(x + 1) = Array2(1) And Array1(x + 2) = Array2(2) Then
' Found it
End If
Next
And loop through finding it by brute force but array 2 will be a different size on each system so doing the above, although I could make it work, isn't practical. I could even do multiple if's like if I find the first byte then find the second, then find the third, and make it a little more bearable but still. Is there a simple way to find a array inside another array?
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Jan 6, 2010
I am trying to have my program check for the existence of a registry key so I do not get a null reference exception error. The key may or may not exist depending on the computer. How can I check to see if it exists and then change its value if it does exist or skip over it to the next one if it does not exist? (I already know how to change the value part of it) Im just not sure how to check for the existence of it for example would be trying to set the value of a key that does not exist called test below... this obviously would throw a null exception error so how do I check for the existence of the key before executing these instructions and then if it does not exist it skips this and keeps going to the next code ?
Dim testkey As RegistryKey = Registry.LocalMachine.OpenSubKey("SystemCurrentControlSetTEST", True)
Dim keyval As Int32
' Set to ON
keyval = 1
testkey.SetValue("ON", keyval)
I also check the status of the registry entry on form load
Dim Test As RegistryKey = Registry.LocalMachine.OpenSubKey("SystemCurrentControlSetMYTEST", False)
'Get the reg value.
Dim Testflag As Integer = CInt(Test.GetValue("ON"))
[code]....
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Sep 25, 2010
I don't understand the error, Argument not specified for parameter 'test' of 'Public Shared Function TestThis(test As String)'.
Partial Public Class Form1
Shared Sub ReceiveCallback(ByVal ar As IAsyncResult)
Form1.Invoke(TestThis, New Object(){"test"}) 'error
[code].....
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Jun 16, 2011
I am trying to check where an item in my array list exists in the database.The list would have already been created at an earlier stage.Now that some items may have been removed from the database, I wish to check the list against that database before removing the items, from the list, which are no longer in the database.The following code removes all items from the list rather than just each one which doesnt exist.[code]....
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Mar 31, 2012
In TSQ IF MyVal IN (1, 2, 3, 4, 14) BEGIN ... END .Is there a way to do this in VB.NET? Is it possible to check for the existence of an integer in a set of integers inline? Such as: If MyVal in (1, 2, 3, 4, 14) Then ... End If
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Mar 5, 2009
The application I'm writing requires the user to select a certain directory on their hard-drive (a game directory), which is saved to the Settings. If the directory is not selected, my application can't work. So, when the program starts for the first time, the directory setting will not be present, and I want my application to ask the user to select the correct directory before the application starts (the main form is shown). I used the following code in the Form_Load event of my main form:
vb.net
If My.Settings.WolfPath = String.Empty Then
MessageBox.Show("Please select your root 'Wolfenstein - Enemy Territoryetmain' mapping installation.", "Select W:ET Path", MessageBoxButtons.OK, MessageBoxIcon.Information)
[code]....
It looks pretty complicated (probably too complicated) but I wanted to make sure that the user cannot continue until a valid directory has been selected. So when the user cancels the folder selection, my application should end. If the user selects an invalid directory (it should end in "etmain") it should display a messagebox and show the folder browser dialog again. It should keep doing this until the correct path has been chosen.The problem occurs when an invalid directory is first chosen. The messagebox does show, but it shows behind all other applications! It took me a minute to figure that out, because I could not find my application anywhere, but Visual Studio still said it was running... After finally finding the messagebox behind everything else, it seems that now everything comes up behind everything else! When I click OK on the messagebox, the new folder browser dialog also shows up in the background, etc, etc. If I then choose a valid directory, the application loads the main form in the background...
I thought at first the problem would be the fact that I am running this code in the Form_Load event. A better place perhaps would be a Sub Main() from which the main form would be loaded explicitly (Application.Run(mainForm)). However, I can only select Forms as the Startup Form. If I disable the "Enable application framework" checkbox I can select the Sub Main() as Startup Object, but all the visual styles are lost...?
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Jan 23, 2010
I use this code
[Code]...
what code i use that my application pick test.pdf file from application directory.
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