I'm just curious as to which one of these 3 error syntaxes in the try/catch is right.
vb.net
try
Catch ex As Exception
MessageBox.Show(ex.Message.ToString())
MessageBox.Show(ex.Message)
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Any example to catch errors and log them to the Eventlog? I would like to catch any error and pass them to my WriteToEventLog function. If I use On Error , how could I catch the Error and pass it to my WriteToEventLog function? I would like to catch the actual error
Public Function WriteToEventLog(ByVal entry As String,
Optional ByVal appName As String = "CompanyName",
Optional ByVal eventType As EventLogEntryType = EventLogEntryType.Information,
Optional ByVal logName As String = "ProductName") As Boolean
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I have developed a windows forms application in vb.net 4 which connects to a MSSQL database. I have used the built-in tools to add the data source, data connection and data set. (Data->add new data source-> etc.) The application is installed on staff laptops which may or may not have network connectivity and may or may not be able to access the server on which the database is held. Obviously this is causing unhandled errors when the program starts and tries to make a connection to the database. (using windows credentials) Does anyone know where in the code the connection is made so I can go in and add some error handling? Or any settings I can change to get visual studio to handle the errors nicely?
View 2 RepliesI am not certain how to do this, but it seems like it should be easy to accomplish.I have four radio buttons that I want to assign answers to, one of which will have the correct answer along with three other answers that have incorrect answers.The answer button I want to set up as a randomly assigned button, with the other three assigned after the fact.'This code works fine to assign it to Radio button #1.rbGenericName1.Text = m_dtDrugs.Rows(DrugNum) ("GenericName").ToString()I want it to be a randomly assigned button, where the location that the "1" is residing, is a randomly assigned value between 1 & 4. Here is what I have so far, but it has a Syntax Error.
rbGenericName & RndNum & .Text = m_dtDrugs.Rows(DrugNum) ("GenericName").ToString()I know that the above code is not correct, I am just trying to represent what I am trying to accomplish. I already have a random number generator in place, I am just looking for the correct syntax.
I just started to build a website using visual web developer 2010 express.I am getting a syntax error when trying to program a submit button...this is the code i have in my Sub menu for the submit button.
Protected Sub Button1_Click(sender As Object, e As System.EventArgs) Handles Button1.Click
Switch(RadioButtonList1.SelectedValue)
{
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I've been trying to solve this problem for quite some time. I have an application that uses the WebBrowser control to provide some navigation capabilities to the user but depending on what website the user is going, there are some syntax errors coming up. These erros would normally not disturb the user under Internet Explorer so I'm trying to hide them some how.
View 3 RepliesMy code is supposed to select the month fand see what product ahas been sold and how much has been sold. It does it but i keep getting a Incorrect syntax near '='. and i cannot fix
CODE:
there are a total of 5 errors with this code.
error 1: Optional parameters must specify a default value - error location "lastEl As object) As Long" - closing bracket is highlighted
Error 2: expression expected - error location "Optional lastEl As Variant) As Long" - where optional is highlighted.
Error 3: comma, ')', or a valid continuation expected - error location "strCycleIDarray As Variant" - where "as" is highlighted
Error 4: comma, ')', or a valid continuation expected - error location "strSearchCycleIDvalueArray As Variant" - where "as" is highlighted
Error 5: Ismissing is not declared and may not be accessible due to its protection level - error location "If IsMissing(lastEl) Then lastEl = UBound(strCycleIDarray)" - where "IsMissing" is Highlighted.
I dont have an idea where to start solving these errors and i cant debug this search as the errors are there.If you dont understand the errors in the format i have put them in just copy and paste the code into a windows form using a button as an activiator.
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I'm using some code I found on this forum ( at [url]) to attempt to insert some data into my access database.
I'm receiving an error, and having trouble finding it.
CODE:
Almost forgot, the error message is: Syntax error in INSERT INTO statement.
I wrote simple update/insert statements that are returning a syntax error, what am I missing? The table name is notes, the field note is type memo, acaps is a double. update notes set note='why is there a syntax error' where acaps=12345
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i'm getting an error with the code below
The Error.... SQL Syntax Errors Encountered
Error in Select clause: expression near 'DESC'.
Missing from clause
[code].....
I'm not even sure if that's what I want.But, here's my question. I have written a small program to automate the running of some files. These files have the potential to give an error in the form of a MessageBox which will halt the whole process. Is there a way to detect if that window pops up so that I can kill the process so the next file can run.
Also, if I can get the location of this MessageBox, is it possible to get text out of it so that maybe I can email myself the error so that the processes can keep running but I cango to that file and fix it.
Is it possible to catch windows messages when the application isnt in focus ?, its not for anything in particular, I have just been playing with wndproc and was just wondering
View 8 RepliesMy application i am using on another computer (Windows Vista) has got a screenshot code inside a timer of 10 seconds. It works perfectly until the user Locks Windows.
When the user locks windows or switches user then the application throws a hissy fit and errors because it cannot take screenshot pictures.
Is there a way i can tell if the computer has been locked and the been unlocked
This way i can have a timer of 1 second and if the computer has been locked then the timer for the screenshots can been stopped , and then when the user logs back in the timer can restart.
I'm editing some settings in the registry and then adding items to a ListView.
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If I'm not mistaken, the code will not continue in the Try block if the first part fails and then move on to the catch statement, correct? I'm adding and deleting a bunch of different entries in the registry and the computers I've tried my app on so far, have not failed. So I'm not able to test if this method will work for error catching. If there's a better method, I'd appreciate the info.
I know it is possible to run a vbscript from within VB.NET (Visual Studio 2005 / 2008) s it possible for VB.NET to catch the vbscript's exit code? I know it is possible within a HTA:
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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.
Web.Config
<customErrors mode="On" defaultRedirect="~/Errors/ErrorUnknown.aspx" redirectMode="ResponseRewrite">
<error statusCode="500" redirect="~/Errors/Error500.aspx" />
</customErrors>
[code]....
here is my code..
[Code]....
If the result is 86 and it's mod by 43 the answer is 2 Case 2 is not firing. it just goes to the end of the procedure.
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.
View 18 RepliesI 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'.
View 9 RepliesPROJECT 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.
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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?
View 5 RepliesIs 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.
View 4 RepliesI am having an issue trying to figure this out. I am writing a script editor that uses tabs (a tab control) and I want to implement syntax highlighting. My issue is that every sample I can find on syntax highlighting uses
Private Sub RichTextBox_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RichTextBox1.TextChanged
With option strict on i have errors addition. I want how to make the addition of:
1. all the odd numbers on a collection of 5 textboxes and see result to label1
2. all the the even numbers to label2
3.all numbers smaller than number 5 to label 3
4. all numbers greater than number 5 to label 4
I'm not sure what happened. I saved my project last night and everything was in working order. I opened it this morning and it's not recognizing a lot of the System methods and functions
MsgBox
Format
FormatCurrency
InputBox
Even the constants like vbTab and vbCrLf aren't appearing. Any suggestions on this? I'm running VS2008 Express Edition.
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?
For example:
1. Main code calls function "DoThis()"
2. DoThis() runs and throws an exception
3. Code breaks at "Call DoThis()"