System.net.webclient.downloaddata - Data in label1 Is Not Returned?
Nov 18, 2010
I have been prototyping a simple site search tool.I found some online references to using webclient.download data. I have a (mostly) working prototype, but it only returns static HTML on the page that is being searched.I also would like to be able to search the contents of controls (such as text in label controls that are set at run time.) In the code below, the data in label1 is not returned.[code].....
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Feb 12, 2010
How do you check if webclient.downloaddata is working? I mean what if the site you are trying to access suddenly turns down. How do you avoid getting an error? Below is an example
Dim webclient As New WebClient
Dim eIP As String
eIP =
[Code].....
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Jun 2, 2007
I'm writing an application in vb.net to download files from a remote server by ftp using WebClient Class
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Apr 15, 2011
I want to make a download Manager with resume capability (dont refer me to codeproject examples which use httpwebrequest and webresponse classes) i want to make the use of system.net.webclient class. I know it can provide me with events and stuff but is it possible to resume our downlaods with this class ?
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Nov 14, 2011
I've got some simple code to download a web page :-
Code:
Shared Function Download(ByVal URL As String) As Byte()
Try
Dim fileReader As New WebClient()
Dim P As New WebProxy("http://proxy01:8081")
[code]....
The problem is that the page doesn't download in full although there are no errors to go on. If I do view source on the page in IE the file size is over 100k. If I download the page using the code above it is only 11k. The only thing I can think of is that the page uses frames and the code is only downloading one of them.
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Mar 26, 2011
I'm trying to filter submitted web sites by attempting to browse them while bouncing the request off of OpenDNS. If the page received is the OpenDNS page, I'll assume the page shoudld be blocked.
How might I accomplish this task using the System.Net.WebClient class?
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Mar 13, 2009
Dim wc As New System.Net.WebClientGamerTag.Replace(" ", "+")wc.Credentials = New System.Net.NetworkCredential(Email, Password, "http://live.xbox.com/en-US/profile/profile.aspx?GamerTag=" & GamerTag)Dim fx As New System.IO.StreamReader(wc.OpenRead("http://live.xbox.com/en-US/profile/profile.aspx?GamerTag=Dark Slipstream" & GamerTag))Dim str As String = fx.ReadToEndfx.Close()
The above code will open a webclient, set the credentials (possible error?), create a stream of the entire page, and then load it into a string (str).I then scan through and look for what is needed (Gamerscore, Motto, Bio, etc)-in this case.This doesn't work however, it doesn't sign in.
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Feb 4, 2011
make a System.Net.WebClient with pause, and resume?
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Nov 22, 2011
Is it possible to send HTTP POST with some form data with System.Net.WebClient?If not, is there another library like WebClient that can do HTTP POST? I know I can use System.Net.HttpWebRequest, but I'm looking for something that is not as verbose.
Hopefully it will look like this:
Using client As New TheHTTPLib
client.FormData("parm1") = "somevalue"
[code].....
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Apr 30, 2010
I've been using an invisible WebBrowser control to submit a form on my server, but I'd like to use System.Net.WebClient() to accomplish this so I don't have the control hanging around on my form.I need to get the page, fill out the username and password fields, and click the submit button. This was done easily enough with the WebBrowser control, but I can't find any examples using System.Net.WebClient().
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Mar 3, 2010
I use a downloadstring (instance.downloadstring) with instance as the'System.Net.WebClient'.
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Jan 17, 2009
I have 2 forms on the first form i have a label with a number in it.When i click a button on the first form this label changes and i also want to change the text property of a label on another form that may or may not be visible.Why does:Form2.Label1.Text = me.Label1.text Not work?
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Dec 12, 2009
I need to parse a Unix text file so, I am using System.Net.WebClient to ftp into a Unix server then using the .DownloadFile() method to get the text file, but its coming in with the Unix end line ""; so is there a way to convert that to windows format while doing the DownloadFile method? I do re-read it after and fix it, I am just looking for a better way.
Or is there an alternate such as instead of a DownloadFile, and the two other steps above can I just read it into an array right off the Unix server?? If so then what method would I use?
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Sep 21, 2011
I am getting an error with this Dim Web As New WebClient Web.Proxy = "69.196.16.237:62159" It says runtime errors may occur when converting string to System.Net.IWebProxy What does that mean?
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Feb 10, 2009
It is working with vb6 but when I used vb.net 2008 it is not working
Private Declare Function GetComputerName Lib "kernel32" _
Alias "GetComputerNameA" (ByVal lpBuffer As String, ByVal nSize As _
Long) As Long
Public Function ComputerName() As String
Dim sBuffer As String
[Code] .....
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Sep 2, 2011
I've spent a substantial amount of time trying to figure this out, but I keep getting the same error
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A first chance exception of type 'System.NullReferenceException' occurred in project1.exe
This happens when I try to use the DataReader.my code is
Public Function Identification() As List(Of Integer)
Dim returnIndex As New List(Of Integer)
Dim dbCount As String = "SELECT Bookingid FROM bookdetail WHERE Date =" & getCurrentTimeString() & " 12:00:00 a.m."
Dim count As Integer = 0
[code]....
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Jul 11, 2011
I am confused which data type to define for my variable which stores value returned by LINQ Statement.
Currently I am defining it as some data type but its generating error like: ""Unable to cast object of type 'WhereSelectListIterator2""`
[Code]...
Here i want myBase to hold the data which has UIN = 4
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Sep 4, 2011
i need to clear this error
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
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Jan 22, 2009
I am just trying to get the system to open a database and I get this error:
A first chance exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll
here's the entire code of the main form
=======================================
Imports System
Imports System.Data
Imports System.Data.SqlClient
[code]....
the error is generated at the open method note* this same code works fine in another computer, the main difference is that this one has a 64 bit OS.
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Jan 26, 2009
i am trying to connect to an MS Access database and I am getting an erro message on the following line of
searchtable_command = New SqlClient.SqlCommand(searchtable_string, testsearch_connection)
Error:'System.Data.Odbc.OdbcConnection' cannot be converted to 'System.Data.SqlClient.SqlConnection'.
Here my connection string:
Dim testsearch_connection As New Odbc.OdbcConnection("Provider=MSDASQL;Driver={Microsoft Access Driver (*.mdb)};Dbq=C:CesarAccessdatabase.mdb;Uid=admin;Pwd=;")
What am I missing?
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Apr 9, 2009
I've just switched my code over that downloads data as bytes to use a WebClient. I add a header saying I will accept GZip and the site I'm downloading from sends me the data compressed. The problem is, how can I check to make sure it is compressed data before attempting to decompress it? It was much simpler when I was using a Web Request to check the response headers, but I'm having a little trouble checking the reponse headers with a WebClient. Does anybody out there accept compression with a WebClient?
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Jun 6, 2011
I am returning a date from my database table:
objSQLDataReader("date")
Which gives me:
31/05/2011 16:00:50
How do I change this to:
31 May 2011
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Feb 9, 2010
I have a asp.net page that has several SqlDataSources defined that feed data into some graphs. The problem is that the graph product does not handle "no data" very well, and throws an error. I'd like this to handle the situation more gracefully-- so I need to check whether the SqlDataSource returned data or now before rendering the graph (and if not, just post a message saying "No Data" or something).
Is there an easy way to check if the data source returned data, and do this if/then without a bunch of code behind?
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Sep 7, 2010
I tend to use
If Not IsDBNull(dr("data")) Then
myData = dr("data")
End If
to catch nulls. Is there a better way? It seems I use this over and over again? Anyone write a function to check this something like
mydata = IfNotNull("data")
I don't know how to handle the different data types that could be returned.
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Aug 27, 2010
I am inserting a record in an SQL table and trying to get the record ID back so I can use it to insert subsequent/related records in another SQL table. I am missing something but have no idea what. Code is below.
<asp:SqlDataSource id="SqlDS_HydInspection" runat="server"connectionstring="<%$ ConnectionStrings:
MenomoneeFalls_DB3ConnectionString %>"
[Code]....
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Oct 6, 2011
I'm sure im just making a simple mistake some place but i just cant find it. I have datatable which I can and can make changes, save back to the database just fine. But if I reload the data after updating, no data is retrieved from the database. But if I stop debugging completely and then start again, it loads just fine...until i call Update.
Here is some code I am using for testing purposes.
Private myDataSet As New DataSet
Private conn As MySqlClient.MySqlConnection
Dim myDataAdapter As New MySqlClient.MySqlDataAdapter
[Code]....
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Jan 10, 2011
i dont really think its that hard to make, but i dont find out how.
I want "label" to change if label1 is "anything" label1.text"random"
i Want the label to go like lyrics, it changes all the time.
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Jul 24, 2009
I have the following HTML Form That I'm trying to automate:
<html>
<body>
<!-- The data encoding type, enctype, MUST be specified as below -->
<form enctype="multipart/form-data"
[Code]....
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Dec 1, 2011
I am trying to get my program to read async so it doesn't just freeze up while it fetches the data. I have:
SR = New StreamReader(WC.OpenReadAsync(New Uri(url)))
Dim html = SR.ReadToEnd.ToString
It keeps throwing the error "does not produce an expression". I remember trying this in the past, only to have the same error.
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Jul 16, 2009
I am calling an Oracle function PKGDummy.F_EMPDATA using vb.net.
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