Unhandled Exception Message Happens Even In A Try/Catch Block?
Apr 25, 2011
This is part of my block which handles incoming messages via TCP. Sometimes it sends scrambled messages which are unpredictable and i need a Try + Catch block for it:'
[Code]...
I can either get "Input string not in correct format" or "typecast not valid". But this is simply supposed to be routine to run into and be able to handle. but that stupid error message keeps popping up I've heard of JITDebugging, should I use that?
View 2 Replies
ADVERTISEMENT
Oct 18, 2011
I'm trying to catch an invalid entry in a textbox that I use to enter numbers using the subroutine below.
In the Catch blok I want to change the ForeColor of the textbox that contains the invalid entry.
This did function but now gives me a null reference exception on the line where I change the ForeColor.
Private Sub SaveParm()
Dim Temps(2, 2) As Double
Dim Cname As String = "Text0"
[Code]......
View 7 Replies
Apr 20, 2012
I am writing ASP.Net Web-form in VB.
I have a system which have already handled exceptions by try-catch blocks everywhere.How do I quickly and generically implement exception logging like overriding something instead of inserting logging functions in every single catch block?
View 1 Replies
Jun 12, 2011
In 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]...
View 6 Replies
Feb 12, 2010
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]....
View 8 Replies
Jan 29, 2009
Is there a way to show the line number of the line of code that caused an exception within a Try...Catch block?
View 5 Replies
May 13, 2012
This may be a debugger issue, but here goes:I have this piece of code:
Private Function Connect() As Boolean
Try
sessionBegun = False[code].....
My intention is to 'convert' the low level exception into something more meaningful, so I throw an exception of my own creation. I want this to bubble up to a place where I can handle it.However what is happening is my debugger breaks and tells me that an exception of type "QuickBooksConnectionException" was thrown.I know that, I just threw it, why are you catching it? From what I've read, this ought to work, and there doesn't appear to be an analogous Java throws keyword, so perhaps it is my debugger.
View 3 Replies
Jun 23, 2011
Working with an If statement I have tried the following
If -0.6 > (LLum_Gline(8).X - LLum_Gline(12).X) > 0.6 Then
patient_frm.llum_gline = 2
MsgBox("Measurement is Abnormal")
End If
I am getting an error message that says Argument out of range exception unhandled. I have double checked and verified that LLum_Gline(8).X and LLum_Gline(12).X are in fact valid.Is my problem simply in how i am phrasing the If statement. Is there a way for me to phrase what im doing without writing multiple if statements?
View 1 Replies
Jan 28, 2010
I have problem in calling DLL file in VB.Net that I had Created it in C++... it give me this error message: "An unhandled exception of type 'System.EntryPointNotFoundException' occurred in test_dll_1.exe. Additional information: Unable to find an entry point named 'add_1' in DLL 't1.dll'."
This is my code in C++ (header file)
[CODE]............
The one in the main
#include "header_1.h"
double add_1(double a, double b){
return (a+b);
[CODE].....................
This code only for creating dll and I did created it correctly and i had tested it in c++ and it did works.... but in the Vb.net I had no luck with it...This is the code that I wrote it in the VB.net
Imports System.Runtime.InteropServices
Public Class Form1
<DllImport("t1.dll")> Public Shared Function add_1(ByVal a1 As Double, ByVal a2 As Double) As Double
End Function
[CODE].....................
And, I did put the .dll file in the bin folder, but also with no luck...
View 4 Replies
Aug 10, 2010
I'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]....
View 2 Replies
Apr 16, 2012
I have a project converted from Visual Studio 2005 to Visual Studio 2010. It compiles and runs.
When I prune "unused references's from this project as listed by Visual Studio, the project fails to compile with the subject error message.
In particular one of the "unused refererences" is to "Microsoft.VisualBasic.dll". The IDE does not allow me to add back this particular reference.
What do I need to add back as a referenceto get this items?
View 4 Replies
Mar 25, 2011
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.
View 2 Replies
Mar 4, 2009
I 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].....
View 3 Replies
Jun 2, 2009
If 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]....
View 6 Replies
May 8, 2009
It is possible to catch an exception and throw a new exception which wraps the first exception as an inner exception: [URL] Also, if I call a function and it throws a certain error, but I catch it, will the calling code's catch handler execute? If so, and it is of a higher exception type, is this not wrapping the exception? eg I can throw exception ex of type IndexOutOfRange, log it but rethrow, catch a higher up exception and do something, or I can throw a new exception and wrap an inner exception like:
View 1 Replies
Mar 19, 2011
For the code shown below, how would I use a try/catch block to handle an error if it were to occur?
TOTKILO.Text = KILO.Text * TOUCH.Text * 0.01
TextBox10.Text = TextBox9.Text * TextBox8.Text * 0.01
K = Math.Round(Val(TOTKILO.Text) - Val(TextBox10.Text), 5)
[code]....
I used VB.Net controls and LINQ to SQL to perform all Updates and Inserts, so when an error occurs I want to show "Enter Data Correctly", how do I do that once I catch an exception?
View 1 Replies
Aug 8, 2011
I have a simple function which tries to get a value from an Obout grid filter column, and if the value is empty, ignores it and moves on. For some reason this code ignore my catch block and always shows a System.FormatException when the input string is empty More bizarre, if I use visual studio's debugger and set a breakpoint on that line, the catch block functions normally (after I continue from that line). I have already confirmed that my Debug | Exceptions | CLR are not set to catch when thrown. I have also confirmed this same behavior in the production version.
[Code]...
View 2 Replies
Mar 1, 2009
how do i make sure -1 is returned if an error occored?
Public Function ExcecuteNonQry(ByVal sql As String, Optional ByVal connectionString As String = "")
Dim returnVal As Integer = -1
[Code].....
View 1 Replies
Apr 23, 2010
Why would my try-catch block still be throwing an error when it's handled?[code].......
View 8 Replies
Oct 13, 2010
Is there some special way to catch exceptions in finally block ?
View 2 Replies
Feb 3, 2011
I've tried to Google this problem, but haven't found any relevant results.I am trying to handle HTTP 500 errors when logging into a web service (the web service returns 500 when login is incorrect). An WebException is thrown, but I can't seem to catch it properly. The exception is highlighted in green instead of the normal yellow (having trouble finding info on this as well)
[Code]...
View 6 Replies
Sep 2, 2010
This is a followup question to this Should I stick with the Try/Catch/Finally construct, or go with the Using construct? Sample Code for Try/Catch/Finally:
[Code]...
View 4 Replies
Jul 7, 2011
We've created a little plugin to add a block of xml comment and create a try-catch to a function. (we simply add this to each and every function we write).But with the latest devexpress update I'm having a problem with the following code.[code].........
View 1 Replies
Dec 14, 2009
I am using ASP.NET 2.0. When i place a TRY CATCH block in my event it always go into the CATCH section, in my case it re-direct the page to Default.aspx. But if I remove the TRY CATCH block the code get's executed fine and it does what it suppose to.
CODE:
There is no error message when i place a break point by the "Catch ex As Exception" Am I reading the selectedRowIndex DataKey value incorrectly maybe?
View 2 Replies
May 1, 2011
In visual studio when I type the word try it automatically adds the catch and and try for me.
I want to add after the catch something like Msgbox(ex.message)... I'm tired to type the same thing over and over.
View 1 Replies
Nov 21, 2008
I normally use the following for global error handling:
Code:
Dim currentDomain As AppDomain = AppDomain.CurrentDomain
AddHandler currentDomain.UnhandledException, AddressOf MYExceptionHandler
AddHandler Application.ThreadException, AddressOf MYThreadHandler
I normally don't have a MDI application, and When I force an error, neither of the events get fired. I don't have anything in a try catch block. How do I do this with a MDI application?
View 2 Replies
Sep 24, 2009
I have a program in which users are entering numbers into text boxes. I'm checking for proper data entry using a TRY-CATCH block. It works great and delivers an error message if the users enter anything non-numeric.
The problem is that now I need the users to enter negative values, but the TRY-CATCH is seeing the negative sign as non-numeric.
View 12 Replies
Dec 12, 2009
okay i have this code
Private Sub Form_OpenGradeBook_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code].....
View 6 Replies
Feb 26, 2010
Catch block in text.vb and display the results in default.aspx
View 5 Replies
Jan 5, 2012
Is there anything similar to the MyApplication_UnhandledException for an user control in VB?
I would like to have a central point where to catch all unhandled exceptions of a user control, without propagating the exception to the application that uses the user control. I made some test raising an exception in a method of my user control where there is no try/catch code (of course in the true project all methods have a try/catch block). The exception was caught by MyApplication_UnhandledException event of the application using the user control. But this is too "far" from the point where the exception happens and in worst case the user should restart the application.
I would like to realize a behaviour for the user control in order that if the user control fails, the exception is not propagated till the application, but just caught at user control level.
View 2 Replies
