where do i have to put the Final single Catch and Try in my application to make sure that any possible errors is intercepted (even on other thread) ?
View 8 RepliesIn my application, every time a button is pressed a complex interface is built, it requires few seconds to be built.All works well till someone press the button too quickly and the application lag behind.Is there a way to read how manu times a button has been pressed so I can jump to build the last interface number equivalet to the sum of the last few click avaoind to try to build the interfaces in the middle.
View 7 RepliesHow can I create a VB application in VS2008 without requiring the application be run on a computer with a .NET framework in place?
View 4 RepliesWhat is the best practice to use Try and catch in an application?Does it make sense to use it for each Sub or Function?
View 8 RepliesI have written another windows application A. I then use another application B using process to run the application A. My main problem is to catch the error generated by application A so that application B can then perform some actions.
View 7 RepliesWe are running on a Windows Client Platform (generally WinXP) in niche industry program that runs in a 640x480 window back to an AS/400 server. To reduce errors I want to watch for when the title bar of the program changes. Then I need to capture the keyboard entries to validate. I'll then make sure each of the entries is valid since the archaic program does no validation. I'll can then do a pop-up then warning the end-user if errors occur and to reduce/eliminate the exception reports.how can I capture the event of the application title bar change = 'string' that I need? API call? Aiming to do this in VB unless another would be notable cleaner.
View 2 RepliesIn my code I am trying to come up with the following messages using a try/catch Unhandled exception has occurred in your application. If you click continue, the application will ignore this error adn attemp to continue. If you click Quit, the application will close immediately.conversion from string """" to type 'integer' is not valid Warning Icon followed by 3 buttons one that saids the DETAILS, another for CONTINUE, and one for QUIT.Here is part of my code. I did use Try/catch correctly, but it doesnt say the message the way i described it above ..
[code]...
I have a program in VB.Net that receives mails from Outlook, extracts attachments and inserts the attachments into a table through a query. I would like to put the query/queries in a Try/Catch block, but cannot do so as Outlook exceptions cannot be caught, and it gives me an error, and unless I put a very specific exception, I cannot catch it. Is there a workaround?
Edit:
Try
Catch ex As Exception
End Try
Exception is underlined and when I hover on it, it says: "Catch cannot catch type 'Microsoft.Office.Interop.Outlook.Exception' because it is not in 'System.Exception' or a class that inherits from 'System.Exception'". This is affecting all my other code which I'd like to put into a Try/Catch block.
The following code causes a "Warning" that Variable is used before value assigned.How do I restructure this Try/catch to eliminate error on the myreader.close command in the Catch part? Code appears to work fine but I dont like Warnings. [code]
View 8 Repliesi have problem when i click a ADD button, there is one null value in the textbox .. so the try catch statemnt is to catch that null value error but after that the catch is success but the button click never stop excute the statemnt till the end of the button event.
View 6 RepliesI have this scenario: in a Sub I have a Try...Catch statement.Within that Try..Catch I call another sub.In that 2nd sub is also a Try...Catch.(see below for example).Now if an exception occurs in the 2nd sub's Try...Catch, which Catch gets excecuted? The 2nd one, the 1st one or both?
Private Sub sub1()
Try
..do stuff[code].....
I was wondering if anyone could tell how to place a print button in my application and then make it work. The printing button is located at the bottom of the code. The Top part is fine (no editing needed).
Public Class Form1
Private Sub cmdExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdExit.Click
End Sub
Private Sub cmdCompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdCompute.Click
[Code] .....
I've created an AIO tool in Visual Basic and i need to create some code so when the application is opened it places itself in the computer startup folder. I know i can do it manually but i want to do it on school computers (restricted access).
View 3 RepliesInitially while login from form1, the application will check login from the database and after login, it again populate values from database to gridview in another form2, and after that i will add values to the database in another form3. And so when again coming to form2, the gridview does not populating the updated values from database. Actually where to place the database files in an application?
View 5 RepliesIf I throw an exception from within a catch, does the finally (from the catch) still execute? i.e.
Try
..some code with an exception in it...
catch ex as Exception
throw new SpecialException("blah blah" & ex.Message, ex)
[code]....
I have an assembly containing a number of classes. This is a class library type assembly, not a windows forms application. It's also single threaded.Is there a way to catch all un-handled exceptions so that I can log them?
View 2 RepliesI am thinking about create flash form and place them in my vb.net application. I wonder in what program that I can create and design the flash form?
View 9 RepliesI have a console application (VB.NET). When it is started, it spawns worker threads to find work in the database and do the task, then look for the next task (A workflow basically).
The problem that I have is that I have my Event Handler in the main thread that spawns the worker threads. Those workers, if they error, raise an event to a public delegate. However my main thread is not detecting these events, and I cannot figure out how to make it. My intention is to do all logging (text/database), email alerts, and restarting the worker to find another task that is not errored. (This will be expanded in the LogErrorMessage routine and such, for now I am just keeping it a simple Console.Writeline so that I can see if the method is being fired or not)
Here is the code around what I am trying to do:
Logger Class:
Public Delegate Sub LogDelegateError(ByVal Ex As Exception)
Public Class EventLogger
Public Event EventError As LogDelegateError
[Code].....
I need to catch log4net exceptions (its own exceptions not app exceptions logged by it). I wish there's a way of doing it this way: [code] I have this code implemented and there's no errors in compilation but i force log4net to have an error (pointing to a non existing database in the config file) and nothing is threw.I've tried the listener aproach: [code] and it's writing the errors to log4net.txt, the forced ones i mean.This last aproach has a couple of drawbacks: it won't append every error to the file, if the error is the same it doesn't write it, i can't get the listener to write every error to that file, only one (I don't know how to fully configure the trace listener, it might be that). Thus it won't append the date and hour to every line wich is a necesity for me. Finally i can't give structure to it (xml). Even if the listener work i need to use the try/catch aproach, since i'm using ExceptionHandling from Enterprise library to log the errors in my app.
View 1 RepliesI was currently looking at on old application that I am maintianing and it uses a mixture of retrieving Application config settings from both the App.config and application config table in the DB.In the new software I am working (a port of the old application) I have a list of email addresses that are static and rarely change, what would be the best mechanism for retrieving these. Currently I am using resource strings so that using them is a simple My.Resources., but what are the benefits/drawbacks of storing the information either in the App.Config or a database table.
View 3 RepliesTo hide my application, I want to place the my Application Icon in the System tray & not onthe Task bar ... but I have both with the following codes:
Me.WindowState = FormWindowState.Minimized
NotifyIcon1.Visible = False
I'm new to programming and to Windows Forms development. I'm using VB.NET and Visual Studio 2008.
My question is: How do I open Notepad from a Windows Forms application, and then place some text string in the Notepad window?
Like I imagine everyone, I often have problems navigating my code because the flow can jump from place to place. For example, if my code calls routine1, and I then want to go to routine1's code, I know that I can click in the dropdown menu and it will take me to that sub. But wouldn't it be easier if I could somehow right click on the call to routine way and select something like 'take me there' which would transport me from the function making the call to the code for the function being called? Then it would be easy to hop from place to place.
View 1 RepliesI am trying to deploy my first application using vb. I have tried to use the one click but here is my problem.
I have a group of data files, some *.txt and one access data base (*.dbf) that I need to have placed in a folder (that is created) located at c:monitor.
how to do it in either the one-click or in a setup project.
I would also like to have a condition that if the files exist that they are not overwritten with an updated installation.
I am using VB.NET 2005 to create a Windows forms application. I have a procedure named SendMail that creates an instance of Outlook.Application, to send an email from my application. I found the code on this forum, I think.The procedure works fine, but I can't use error handling with it.I call the procedure from a button click event. I put the procedure call in a try/catch block, and the application won't build, with the following error.
Error 68 'Catch' cannot catch type 'Microsoft.Office.Interop.Outlook.Exception' because it is not 'System.Exception' or a class that inherits from 'System.Exception'. C:datadevdmtiQTSQTSv7_1_20100212wQTSQTSReportsCriteria
pt_frmReportViewer.vb 43 21 QTS
Here is the code:
Sub SendMail(ByVal sFile As String)
' Create an Outlook application.
Dim oApp As Outlook._Application
[code]....
How copy folder with its content from place to another place. example from C: to D:
View 15 RepliesMy form cant move i set none to formborderstyle and made my form transparent using
CODE:
So now i cant move my form from place to place.
I am learning Visual Basic 2010 and I am working on a space combat program for my own education and amusement (a simulation of the Honorverse space combat system). I have a routine to add ships to the enemy ship roster and then place them randomly on the viewscreen. When I step through the sub with the debugger, it works fine, but when I run it without stopping, it wants to place all the objects in the same place on the screen. It's actually assigning 2 random numbers pertaining to the size of the viewscreen and assigning those numbers to GameObjectScreenLocation through GameObjectWorldLocation.X and GameObjectWorldLocation.Y. The objects are fully initialized to 0 in their constructor, FYI. Code is below:
[Code]....
Have a VB.net application that installs initially from CD and then when the user gets into the internet the application updates. In order to better support problems with this application is has been suggested in the past to uninstall it and do a fresh re-install. However, in investigation it was determined that the uninstall does not consider all installed objects and does not uninstall the CD install.Can the uninstall functionality be modified to catch the other instances of this application and also uninstall them?
View 11 RepliesI'm getting 'Catch' cannot catch type 'Object' because it is not 'System.Exception' or a class that inherits from 'System.Exception'. and 'Expression detected' Code underlined in blue: Catch obj1 As Object When (?)
Private Sub OpenJAMem()
Dim num3 As Integer
Try
[code]....