Launching Web App - How To Prevent Pages From Loading Without Prompt
Sep 7, 2011
I am using VB.Net and VS 2008 to develop my web app. When I launch the app, pretty much all the pages get loaded (by that I mean the page_load event is triggered). This happens even for pages that I created. When this happens, the app throws some errors (if a particular value has not been loaded from the database) and thus results in javascript errors (yellow icon at the bottom of IE). How can I figure out "what" is causing the pages to load, and how can I prevent the pages from being loaded without code-prompting.
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Jan 17, 2010
My boss has given me an asp.net web application that was done by his former employee. Now my boss has no contact with that employee. He wants me to make some changes in that web application. I went through the application. There is no documentation present for that application . Its a huge application. It contains many directories. I think it was a team work. It has many asp pages, aspx pages, jsp pages, xml pages, css pages, etc... How to understand other person or team's website or web application that was written in asp or asp.net and vb or vb.net?
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May 1, 2012
What I got:
SecureBasePage.vb (to be inherited by pages that require to login)
Default.aspx which inherits SecureBasePage
What should be the case: client requests Default.aspx but gets redirected to login because he isn't logged in.
SecureBasePage.vb has this constructor
Public Sub ()
If userIsAuthenticated Then
[code]....
This results in a exception LoginException. Now I want to let it being catched by a somehow global exception handler which kicks the client to login.aspx.I know there is a function Application_Error() in Global.asax but in my opinion this isn't an exception handler as it only takes the Server.GetLastError() and doesn't catch the exception. So more likely this function is to allow a developer to send an email about the unhandled exception. I'd call this a 'global unhandled exception handler' instead of an 'global exception handler'.Is there anything I can kinda try-catch to catch the constructors exception throwing?
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Jan 20, 2010
I have a VB.NET program. In proerties/Application I checked Make a Single Instance Application. But it still allows someone from opening the program while already opened. How can I prevent this?
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Feb 12, 2009
1. I want to load pages in web browser without loading scripts and Pictures(Jpeg,gif,png).
2. When Web Page Loads my Application Stops Responding. After that it responds. In one place of my Code i have added thread.sleep(10000). is it reason for that?
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Mar 3, 2012
I have a form contains NumericUpDown1, TextBox1, TextBox2, at design time i set NumericUpDown1.Value to 4 and TextBox2.Text to 100, and i have this sub[code]...
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Mar 23, 2010
I coded this program. It has three forms, when I try to open the [Design] on one of the forms it give me this error: To prevent possible data loss before loading the designer, the following errors must be resolved:
[Code]...
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Aug 13, 2009
Prevent an empty column in Excel to be loaded into a dataset column?
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Mar 11, 2010
Assume a .NET class library code that, for example, writes to the Windows registry. Then this code has problem to run over internet, because default Internet policy does not give access to write to the registry.By adding a RequestMinimum statement in the assembly we can specify that the code requires permission to write to write to the registry. This will not alter the fact that the code does not have the permission, but will stop the assembly from loading; the runtime will throw a System.Security.Policy.PolicyException and identify the permission that is required.Do you now any other examples of using evidence, security policy and permissions (the key elements of code-access security) to prevent an assembly from loading on a web server?
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Jun 14, 2010
Is there a way to turn off all visual updates to a .NET form while I am manipulating it? When my program first loads, for example, I set the tab control to the tab that was last open. The user can see the program switching tabs.
I have looked into SuspendLayout and ResumeLayout, but either I don't understand what they are doing, or I am not using them correctly, because they don't seem to have any effect. Someone told me that there used to be a way to turn off paint events in VB 6. Does this still exist in .NET?
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Dec 20, 2011
I am using Stanav's PdfManipulation2.AddImageToPage(..., Pages) for iTextSharp library (v5.1.3) and was not able to add the image to specific pages: e.g. to add to only page 1 and 3 of a five pages PDF
Dim Pages() As Integer
Pages = New Integer() {1, 3}
PdfManipulation2.AddImageToPage(..., Pages)
Calling AddImageToPage() with the the optional Pages parameter will add the image to all pages though.
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Mar 19, 2009
I have a form on a .NET webserver using aspx pages with the vb code-behind pages. The form collects the entered data and then emails it, that part works fine.Right after it gets emailed, this code checks to see if the email was sent or not and then updates the landing page accordingly. I used to use just an IF THEN statement, but now that doesn't work in these new .NET pages. Here's the end of the code that I am having difficulties with:
[Code]...
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Jun 19, 2009
I have heard of setting server specs to have HTML pages parsed as PHP pages by changing the .htaccess or httpd.conf files. Is there a similar solution to have HTML pages parsed as ASPX pages?
A website I am working on does not want their PageRank to lower since their HTML pages are already indexed and used on other websites but wants to use some dynamic features of aspx pages (like include the navigation file so that changes to the nav will only have to be done in that one file).
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Jul 13, 2011
i have this program which records the every printing made on a local computer.I am to record the number of pages of the document to be printed and the number of printed pages. i have this code but i don't know the number of pages and number printed pages always return 0 [Code].
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Feb 26, 2009
I'm using VB.Net 2005 Pro and have created an .msi for my app using the built-in installation deployment project.When the installation is running however (or at the end of the process) I need it to run another .msi which I'll include in my distribution.How would I go about that? I've tried adding a custom dialog to the installer but that won't run another .msi.
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Apr 6, 2012
i am having difficulty in lunching an application using vb the application i am trying to launch is a "MicroAppache" a distro of the Appache http server Background When the application is launched, it loads also some dll files and other dependencies.When i use this vb
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
System.Diagnostics.Process.Start("C:UsersvidhuDesktopwebserverinDebugMicApamapache.exe")
End Sub
to launch the exe. it doesnt load. instead it throws an error the it cannot find its dependencies. BUT When i place the vb app which launches the appache exe in the same directory as the appache exe. it works fine! It seems that the mapache.exe tries to find its depenancies in the directory where the launcher is and not in the directory he is in.Example If the launcher is located in:
C:launcher
and the Apache Server is located in
C:launcherapache
it will not work because it tries to find the other files it needs in
C:launch
If the launcher is located in:
C:launcherapache
and the Apache Server is also located in
C:launcherapache
it Will work
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Jul 26, 2010
I can create a shortcut using this code:
Dim sFolder As String, sTarget As String, sAppName As String
Dim oShell As New WshShell
Dim oShortcut As WshShortcut
[Code]....
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Dec 14, 2011
This is probaly a simple question, I am not a programmer I am a systems admin. I am trying to launch a application from a visual basic script. Everytime I run the script looks for the application in whatever folder the script is sitting in. If ut the script in the folder where the executable is it works. Unfortunatley this script need to run from users temp directories. What am I doing wrong'
' *****Declaring variables*****
Option Explicit
' Comment the next line out if you are not getting this to work and you need to debug.
[code]....
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Mar 8, 2009
Okay, I know how to launch a file with its associated app:Process.Start("File.mp3")And I know how to launch an executable: Process.Start("program.exe")This is the best I've been able to come up with for starting an executable with parameters:Process.Start("program.exe", "@ 'List of command line parameters'")Will that work?
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Mar 12, 2010
I am writing a basic little program. Amongst everything, my program will let you install printers remotely, To cut a long story shot I don't want to use the rundll32 shortcut to install as you can only remove the printer using rundll32 again which I don't want.
The way I wanted to do it is create a VBS script and execute it remotely using psexec. This didn't work for some reason, locally the script works fine but when executing it remotely the script runs but doesn't perform any of the actions inside the script.
The only other option I can think of is launching the VBS via WMI. I have done a bit of research and I cant seem to find any VB code that does anything similar.
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Sep 24, 2010
I was wondering if someone could help. I have a little vb.net program, an exe, a pdf and a pps all burned on a DVD.My vb.net program will autorun and I have command buttons to open each of the other items from the DVD.I can open all items if I use the proper path but not all rom drives are the same. I have searched for this a lot and there are a lot of inguiries regarding the same but none of the solutions seem to work.I have a work around for D:\ and E:\ drives:
Try
Process.Start("D:\MyPresentation\BHW.pps")
Catch
Process.Start("E:\MyPresentation\BHW.pps")
End Try
I use this for each command button.I have tried Process.Start(Application.Startuppath & "\MyPresentation\BHW.pps") to no avail.
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Feb 25, 2009
I'm using VB.Net 2005 Pro and have created an .msi for my app using the built-in installation deployment project.
When the installation is running however (or at the end of the process) I need it to run another .msi which I'll include in my distribution.
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Apr 2, 2012
my folder dialog windows isnt opening. its odd cause its been working for a long time.app closes soon as i click on my button
'Open Folder Dialog
Dim folderDlg As New System.Windows.Forms.FolderBrowserDialog
Dim selectedFolder As String
[code]....
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Aug 24, 2009
I was looking to launch a program, such as MS Word, by pressing a button on particular form. Is there a way for me to do this?
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Jan 27, 2011
I created an application in Visual Studio 2010 - visual basic. It works great on computer1 and computer2, but on computer3 and computer4 it crashes when its launched. It says that the program has crashed and more information can be found in 3 files named WER.But in these files i can not see an error.
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Nov 18, 2010
When I click a button to Shell something, instead of having to specify where the exe (or whatever file it might be) is, i was wondering if I could combine it with VB to make it something like this. Shell ("Internet Explorer.exe"). Also, have VB save the file so anywhere I take that single exe file i made with VB, the exe file I want to shell goes with me. So that way I can launch multiple files from just one exe file and not have any directories to worry about.
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May 15, 2010
I have a dual-monitor setup. When I launch the main program, I need to make sure that it always launches in "Screen 1". I have a button within the program that launches another fullscreen window and I need this to always launch in the next available screen (read: not covering the main program window)I am using the System.Windows.Forms.Screen class to try to accomplish this and have have had about 80% success. I can successfully test for multiple monitors (which enables the button). When they click it, I can get it to always launch in the second screen. The problem I'm encountering while testing is the main program is launching in Screen 2, so the second window covers it.
Here's what I'd like to accomplish ultimately: I would like to always launch my program in Maximized stated (and disable resizing,
minimizing/maximizing is ok, just not double-clicking titlebar to resize) in the primary monitor (where Taskbar is being displayed). Then, when the button within the program is pressed, it launches the new window in the NEXT available monitor in Maximized stated.
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Nov 19, 2010
I have a vb.net application that I compiled and all, I took the EXe and all and placed it on another pc that has only visual studio express on it.
When I open my .exe I get a message saying No debugger has been found, no Jit Debugger has been specified I can either select retry to find a debugger or click on cancel to forget about the debugger.
If I press cancel, my application launches correctly without any problem.
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Jul 13, 2009
I have a window application develpoed in vs 2008, framework 3.5, in which i have put a button.. Now where i click that button the other text boxes are filled up with the data from database thru web service.. what i want is while all text boxes are being filled i want to show an animated loading gif image till data loading is completed in all the text boxes.. i have tried to use image picture box but while data is loading gif image is displyes but in static mode.. cant see animation... i think this is because data loading and animation both are done thru one UI thread..
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Dec 4, 2010
I would like to make an alarm clock application, however I am having some problems in the brainstorming phase.
My main problem is the fact that I dont know how to ensure the application will be able to calculate the time and thus set off the alarm. For example, when the application is closed, how will the alarm go off?
Ideally I would like to make this app a system startup item, so if the system is rebooted, the application will automatically relaunch - but again, I dont know how to do that.
If the system is sleeping, how can I wake it up? These kind of problems.
Another dilema I have, is if this application is always running, how could I have it go to my taskbar hidden icon menu (the right section of the taskbar next to the time).
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