I'm familiar with Throw New Exception(), and how this causes an application to "break" with an error at the Throw line itself.But what I'm after is a way to throw the exception within a function, and for the application to break at the line which called the function - not at the Throw statement itself.Is there a way of doing this, but without having to wrap the function call within a Try-Catch?
I just noticed this, but I had a for loop where I incremented beyond the number of elements in an array. Normally this would thrown an exception.
This was in a form load event, and all that happened was the rest of the code in the event never executed. If I wasn't looking for what was supposed to happen next I never would have known there was a problem!
There was no try catch block there... but I would think it would still stop program execution with an error.
Can anyone explain this? Do I have some stupid skip error checked somewhere (if this exists, I'm going to be really annoyed)? In a button click event I put the exact same code and it threw the error... it seems to just be a problem with a form load event.
I have a project written in MVC2 and VB.NET. I use a lot of htmlhelper extension methods,and I have them all in a public module. They work just fine, and I can compile and run my project. I reference the namespace they are in with this:<%@ Import Namespace="MyProject.WebUI.Extensions" %>So, again, they work great, my project runs and compiles without a hitch.The problem is that each one of these extension methods is shown as an error:
Error 33 'TabbedMenu' is not a member of 'System.Web.Mvc.HtmlHelper(Of Object)'. C:ProjectsMyProjectMyProject.WebUIViewsSharedSite.Master 23 21 MyProject.WebUI
I know this idea of - if message boxes are used to display error messages inside a .dll and when the .dll is installed in a different computer (possibly a server machine), errors occurring inside that .dll will be shown in the server and not to the user. Since practically there will not be a person near the server to click 'OK' to the error message every time it occurs it will stuck the programs using the .dll.
So how to write exception handling to a .dll project?
This is very basic about the layout of classes, subs etc. 1. Should all my subs & functions always be inside a class? I haven't used classes too much before, mostly just a bunch of subs in a form file. Now I downloaded a sample program which I want to develop. This has all the code of the form inside "Public Class Form1": [Code] The code is an example of use of the ZedGraph library. It produce a simple window with one graph/chart. Now I want to develop this code with several tabs, a dusin different charts, file I/O and so on. I'm ok with most of the specific coding, but my question is on the general coding;
2. Should I continue my subs&functions inside this form? inside this class? inside a new class? Earlier when I've NOT been using class, I can make global variables by placing the "Dim" outside the subs. This does not seem to work within a class. 3. Should I avoid global variables all together, or how is this done without always passing arguments?
Also I will make more forms, for program options etc. 4. Should these forms be coded as classes? or just subs&functions in a form? Obviously I'm not well trained on the proper use of classes and have trouble to find this easily explained.
say you have a sub containing an io.streamwriter. That streamwriter is declared and used only inside that sub (and not as static). Should you still call dispose on that streamwriter or is it disposed automatically as it is no longer in use after that sub, until you call that sub again?
Well I am a new to VB.NET, converting a legacy system to .NET world. Recently I have been reviewing the already existing code since I joined the project quite late in the team. I find that there are many shared functions (not shared class) inside many classes. I doubt this may create some problem if two requests ( i.e two different HTTP request to the same method as it's a WCF application, of course exposed methods are not shared but internally called methods are shared) comes to the same shared method and both the calls to the method may have different method parameters/arguments, overwriting each other's arguments. In short, if shared method has a list of arguments which is going to be processed, is there any chance of inconsistencies in the light of multiple access to the shared method via two http requests.
I have a .net application that uses customerrors web.config module to display meaningful messages for errors. It works without any issues for 500 errors/exceptions caused by non-ajax and ajax components (updatepanel). However, in a scenario where updatepanel's asynchronous request times out, there is no error raised at all. I was able to see the timeout in firebug and come up with a solution that would at least display the error message as an alert and then redirect the user to the 500 error page using javascript but it's not quite doing what the rest of the application does in case of an unhandled errors like these. I basically just want everything to go through "LogEvent" mechanism so based on the severity of the error, it does the necessary work.This 500 error page doesn't have anything in the Server.GetLastError() for these timeout scenarios. Is this an expected behaviour? Can it be changed so I do have access to these timeouts in Server.GetLastError() OR maybe just run this error through "LogEvent" mechanism? Is there a better/more graceful way to handle this issue?
Below is my code to give you an idea, not exactly what I have in my application but pretty close.
I am working on a project for school and I am encountering several errors in my code relating to the numeric up down boxes I have in the application. I have inserted my code and the error list below. I'm sure that it is probably something really simply but I am learning the language on my own and I am a little stumped here.
I converted vb6 project to vb.net 2008 but I got some error first one :Name 'VarPtr' is not declared.I got this one two times :Value of type 'Projectname.Func.EXPLICIT_ACCESS' cannot be converted to 'String'.
PROJECT TYPE: Windows Forms Application LANGUAGE: Visual Basic .NET VERSION: 3.5 IDE: Visual Studio 2008 OPTION STRICT: on OPTION EXPLICIT: ON
I am attempting to teach myself VB and write a parental control application at the same time, so my learning curve is rather steep. However, I have managed to complete the design of the application with no design time errors, and to my untrained eye, all my code looks like it should work. Unfortunately, when I attempt to debug the thing, it returns an error that looks like Greek to me. I have traced to line numbers I found mentioned in it, but I couldn't find anything wrong. I just need someone to point me to the part of my code that isn't working, and maybe give me an idea of how to improve it.
The project consists of 3 forms: MainForm, WarningForm, and AboutForm. The 1st and 3rd are self explanatory, the 2nd is simply a message popping up telling the windows user that they have 10 minutes before they will be logged off of windows. I cannot imaging why any of the codes on the 2nd or 3rd forms should be causing this issue since they don't activate until either a button is pushed (AboutForm) or after a certain number of hours has elapsed (WarningForm). So unless someone feels that it would be helpful, I won't post those on here.
I have developed a contact's manager in VB.net 2008, the program works fine on desktop's but when I try using it on a laptop I get this error message: microsoft.visualbasic.powerpacks.vs, version=9.0.0.0, culture=neutral,publickeytoken=b03f5f7f11d50a3a
I can't figure out how to get VS to break only on unhandled errors. I've tried this checking the "User-unhandled" box and unchecking the "Thrown" box for "Common Language Run-time Exceptions" and I've tried checking both boxes, and I've tried checking only the "Thrown" box, and I've tried unchecking both boxes.VS either completely ignores all run-time exceptions or breaks on both handled and unhandled run-time exceptions. Is my VS 2008 IDE broken or am I missing something?
Is there a way to catch ALL errors of the program?
Purpose: The idea is to catch all the errors of the program, load errorform which basically just says "A Error Was Detected" (Which I have already designed). Then send a web request to a formmail.php file with the said error (which i have already done).
In short: I need a way to catch ALL errors, and get the error string that it gave.
I was trying to make a calculator which takes the amont of copies you want to make and it tells you the cost. Then you type in the amount you want to enter and if its less a message box comes up saying "please enter more money". I've had a few problems
1. when i use formatcurrency the program crashes for no apparent reason
2. if i calculate cost without entering any copies then it crashes (ive tried putting a msgbox in but it crashes anyway)
3. if i get the msgbox to come up saying "Please enter more money" i had to remove the formatcorrency tag.
ive been building a app, and have a beta tester who is on xp, im on vista x64, the app works great t my end, an dive also tested it on another pc with vista x64, and on a laptop wit win7 32, Now my beta teste has been testing fine on hes xp rig, up untill today when the WIP build i sent him started kicking up errors all over the place, try as i might i cant narrow it down to were the error is, heres how the app looks on vista and win7:[code]So i thought it might of been something i changed in between the working xp version and the wip but, all i changed was the page title, nothing else, no code etc.
I used to develop applications in VBA, but now I'm using SQL Server 2008 Integration Services for a lot of the functionality, and using VB.NET as the scripting language where needed - all of which are new to me. I need to do the same string manipulation in several different SSIS tasks. With VBA, I'd simply write a function and declare it Public, and I could use it from any module. E.g.
Public Function MakeId(ByVal Country As String, ByVal Postcode As String) As String .... End Function ' later... Dim MyId as String MyId = MakeId(County, Postcode)
But when I do that in a Script Task or Script Component, I find I can't call the function from VB in any other Script Task or Component; it says MakeId is undeclared. It works within its own 'box', but not from anywhere else.
I am using Visual Studio 2008 to try and create a calculator program that can convert binary to decimal. I have some code but I'm having problems figuring out what to write as an "argument" when I was to call the function.
Here is the code I have so far.
Public Class Form1 Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click
I am trying to pass multiple signature calls to an overloaded function. My understanding is that VB can recognize the different signatures and use the appropriate function.[code]...
I was curious if anyone has heard of writing a program with functions only. It is part of my current assignment but all the examples I have seen all over have at least subs for the click events. SO I am a little confused to say the least.
I'm taking a class in VB, so I have numerous projects. I have a lot of useful functions and code, and I'd like for them to all be included in on piece of code that all my projects can use. The problem with DLLs is that when I build, the EXE needs the DLL to be in the same folder. I want a standalone EXE file. Is there any way I can have a DLL in a different folder than the EXE and still use it? Or is there some better solution to having useful code somewhere so when I update that code, it will affect all of my projects?
