Company Firewall With System.Windows.Forms.WebBrowser
Nov 22, 2010
VB2005. In my application I am required to go to a website, collect info, and then display both the webpage and the info collected. For this I am using the System.Windows.Forms.WebBrowser component and have it working faily well. The only thing now is that in order to get to external websites the company requires us to login to the firewall proxy server. For example when I visit [URL] a login box pops-up for our firewall server [URL] and I sign in with ID 9999 and password "pass". I am trying to programatically do this with the WebBrowser by using the credentails but have not found any relevant examples. Is this possible with the System.Windows.Forms.WebBrowser component?
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Sep 8, 2010
I have the code which checks if there is a selected tab
Private Function GetBrowser() As WebBrowser
If TabControl1.SelectedTab IsNot Nothing Then
For Each c As Control In TabControl1.SelectedTab.Controls
If TypeOf (c) Is WebBrowser Then
Return c
[Code]...
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Jan 23, 2010
Private Sub wb_Scrape(ByVal sender As System.Object, ByVal e As
[Code]...
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May 9, 2012
If you are interested, I am doing this because I do not like having to drag and drop my browser etc. I just right click the URL in Chrome and select (Play on My TV) a customized dropdown item, at which point my Player finds the TV, opens the URL, maximizes itself and plays the content
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Mar 3, 2009
I'm instantiating a WebBrowser object and programmatically clicking a button to navigate. Is there a way (property, method, or voodoo ritual) for me to check the browser after it lands on the new page to see 1) the form method that was used and 2) the post data?
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Aug 30, 2011
We are using a web browser to show a pdf file located in a folder on the network. The code looks like this:
System.Windows.Forms.WebBrowser.Navigate(New Uri("\hostpath ofile.pdf"))
This works fine, but now I have to use a specific user to access this file and I don't know how to include the user name, password and domain in the URI. Is it posible to add user credentials to the URI? Can I use another variant of Navigate method to accomplish this?
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Apr 27, 2009
Essentially what I want to do is copy a WebBrowser object such that I can do the equivalent of "Open In New Tab" or "Open In New Window" actions, maintaining any posted data. I don't just want to navigate to the same URL as in the original WebBrowser object, rather I want to repeat the HttpWebRequest.
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Mar 16, 2009
With the following imported namespaces in my project :
Imports System.Windows.Forms
Imports System.Reflection
.. I cannot add..
[code].....
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Apr 28, 2009
I have a panel with some controls in it (several textboxes, a slider, 2 buttons, and a small groupbox).. When I click a button, I want all of the textboxes within the panel to be readonly... So I have this code: [code] When I run it though, I get the following error:Unable to cast object of type 'System.Windows.Forms.Button' to type 'System.Windows.Forms.TextBox'.If I remove a button, it moves on to give me the same error but for a label..
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Apr 14, 2011
An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll it also says make sure you do not have infinate loop or infinate recursion il give all code in order that they are executed in Check the chechbox and it disables all irelevent stuff and populates the combobox
Private Sub CheckBox_Spray_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox_Spray.CheckedChanged
If Me.CheckBox_Spray.Checked = True Then
[code]....
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Mar 21, 2012
I've never use a .net WB control before. When navigating to an internet web page I kind of assumed the firewall would block it or pop up a dialog telling the user that someapplication is attempting to access the internet.
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Mar 12, 2010
When I do this
Public Class cInherits : Inherits Panel
I get this: Base class 'System.Windows.Forms.Panel' specified for class 'MenuButton' cannot be different from the base class 'System.Windows.Forms.UserControl' of one of its other partial types.
How do I inherit?
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Jun 12, 2011
i need to get data from checkbox in a groupbox. in the groupbox, it also have a label. so my coding as below
[Code]...
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Oct 29, 2011
I am trying to use values from form1 in my project, in form2, but Im not sure how to do it. I've tried
txtboxTotal = (Form1.vsbLength * Form1.vsbWidth) * Pattern
But I get: operator '*' is not defined for types 'System.Windows.Forms.VscrollBar' and 'Systems.Windows.Forms.VscrollBar.'
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Oct 20, 2010
Win7 64 bit; fully patched VS2008 targeting FW2.0; VB.Net; running in Debug Mode (not tested in Release mode)I have a resonably complex app which I am refactoring a bit. As part of that, I relocated some code from a subroutine into a Click Event Handler. The Event Handler will, late in the handler, call the, reduced in function, subroutine. The point of this is thatNow when I click the button associated with the modified Handler I get:A first chance exception of type 'System.AccessViolationException' occurred in System.Windows.Forms.dll<br />With Error System.AccessViolationException Attempted to read or write protected memory.This is often an indication that other memory is corrupt.
at MusicManager2009.frmMain2.cmdLoadAlbum_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
[code].....
All functions of the app, except those that start from the buttonclick in question, work as before in the problem version.The problem persists after rebuilding the entire solution, after restarting VS, and after rebooting the PC.
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Feb 19, 2010
When I run my project I get "An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll"
Public Class frmViewReport
Dim objForm As New frmViewReport
Private Sub frmViewReport_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
objForm.ViewReport("C:a2.rtp", , "@parameter1=test�mter2=10")
[code]....
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Nov 16, 2009
I have the following code running, the first time I change the selected index, everything runs smoothly. However, if I try to change the selected index again, nothing happens and the subcategories combobox values do not change.
Private Sub cboMainCategory_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboMainCategory.SelectedIndexChanged
'* make sure the combobox is fully loaded
[code]....
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May 6, 2009
I keep getting an eroor this error says: An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in system.windows.forms.dll Additional information: Specified argument was out of the range of valid values.
Option Strict On
Public Class frmWeeklyReport
Inherits System.Windows.Forms.Form
[code].....
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Feb 12, 2011
A first chance exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll It displays in my Immediate Window when i run my program, I'm using a text reader to read a number of XML files using background worker...most the time it stops so something is wrong but sometimes it works fine.
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Feb 6, 2010
I am working on a card game, and i get this werid error:
A first chance exception of type 'System.Reflection.TargetParameterCountException' occurred in System.Windows.Forms.dll
The code that is cousing this error is:
Private Delegate Sub ShowcardDelegate(ByVal test As String, ByVal objtest As Object, ByVal value As Boolean)
Private Sub Showcard(ByVal test As String, ByVal objtest As Object, ByVal value As Boolean)
If objtest.InvokeRequired Then
[code].....
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Feb 23, 2009
I want to cast a system.string to system.windows.forms.form
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Mar 31, 2010
I am writing a program for my A-level coursework But for some reason I got this build error this has never occurred to me before, I have no idea why I can't use string for the name of my form.
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Mar 5, 2012
When I add a new, empty form to my VB.NET VS9 project, the linenherits System.Windows.Forms.Formis missing.What am I doing wrong here?I thought it would be added automatically.I experienced that some thing get weird if this line is not there (Form_Load is not firing, I think).
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Jun 27, 2011
VB 2008, DataGridView,DataGridView1_CellLeave(sender, New System.EventArgs)
"Unable to cast object of type 'System.EventArgs' to type 'System.Windows.Forms.DataGridViewCellEventArgs'."
What is the Correct String for "New System.EventsArgs"
Anybody there is to help me out.
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Aug 15, 2011
How do i check if specific port is blocked by Windows firewall , both in incoming and outgoing connections.
I've seen code samples such as this one:
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim host As String = "localhost"
Dim port As Integer = 6900
[Code]....
But how can i know if the exception is thrown specifically because of firewall blocking, and not because of other socket errors?
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Jun 12, 2011
I am trying to control the security board using the Windows Firewall which connects to my server that was made in VB.Net. My only problem is when I open the Windows Firewall my server crashes. It also displays this error: "Error, win%fir%90y4e does not support this server. upgrade you version of Winsock.". So I upgraded myself to the latest Winsock that there is out there. After doing so I try again and my server still crashes, but this time with a different error. The error this time was the following: "Error, no client is available for win%fir%90y4e. try again later.". What do I do?
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Apr 2, 2010
i'm doing my last year computing project for A Level (using vb.net) and i just need a bit of advice on how to implement something.My system is basically a private taxi hire system for use by the company secretary. They add customers, new drivers, new bookings etc.Add the moment that is all basically coded, with connections to my database etc.
However i was advised that in order not to slip up i need to have a way by when making a booking if one driver is already booked up at the same time he/she is not available. Basically an intelligent booking system that takes into account cancellations, time clashes etc instead of just simply typing in details of a booking and clicking "save".
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May 13, 2011
I built a WCF service that exposes itself for a web application, it accepts an object and prints the data on the clients machine. Works fine on my development machine, and the service is up and running on any machine i install it on. I can enter ip address in clients machine web browser and see it is running. Problem is when i send the object to the clients machine it returns an error, that sounds like it could be because of the clients windows firewall. Where would i start at to deal with this problem ?There was no endpoint listening at http://192.168.1.168:2202/PrintLabel that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.
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May 8, 2009
Use WMI and admin credentials to tell windows firewalll to unblock a port
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Jan 17, 2011
[Code]...
there is one problem here the root node on the line "GetDirectories(info.GetDirectories(0, rootNode))" here is the error "Error 1 Value of type 'System.Windows.Forms.TreeNode' cannot be converted to 'System.IO.SearchOption'."
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