Trapping Of Error Line With Try-Catch?

Dec 22, 2009

In my code I'm using the Try-Catch functionality. All errors are written to the event viewer.I do it now with identifying the lines of code with a number.

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Try / Catch Not Trapping Exceptions

Mar 25, 2011

I am working on an app that uses a third-party charting component.It is a .Net component. There have been some occasions when exceptions have occurred inside the third-party component code, but my try/catch is not trapping them.Should they get trapped?My code is structured roughly like this:[code]I have since found and fixed what was causing the exceptions, but I would have thought that this should trap them. What happens when I run in the IDE is that it crashes and Visual Studio throws up a page telling me there is no code available to debug, and no disassembly available.Fair enough, but I repeat - why doesn't the exception get trapped?

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VS 2008 - Get Error Line - Using A Try- Catch Statment

Mar 15, 2010

Is there a way that when using a Try, Catch statment to give details of the sub routine and line that the error occurred? The reason I ask, is that there is a user in a different state who is using a tool, and he is getting some errors. He is getting an unhandled exception message. I can not seem to reproduce the error, and want to know where it is happening, other knowing that is has happened somewhere in the UpdateModelLists.

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Error Trapping Text Box's

Jun 27, 2012

A user will enter a name and a text score of a student. The names and scores are saved in a list box and once they are stored I click 'show the array' and I get a parallel array filled with the names and scores.

I need to error trap the text box's so that when the user inputs a number its a number between 0 and 100. IF its not it needs to end the button click event.[code]...

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Getting Global Error Trapping

Oct 7, 2009

What I want is a Global Error Trap that will not stop code execution. What I have found is examples where each module requires some code or a Try block. I need it to be totally generic. Everything from UnHandledExceptions to conversion errors.

If I have to use try blocks all over the place then it is not Global Error Trapping.

I need code at the highest level possible that will always catch any and all errors reported by VB.[code]...

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Error Trapping And Validation Of Fields In A Form?

Jun 8, 2009

Try
If Me.CompanyNameTextBox.Text.Length = 0 Then
MessageBox.Show(

[Code]....

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Error - Catch Cannot Catch Type 'Microsoft.Office.Interop.Outlook.Exception'

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.

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Restructure Try / Catch To Eliminate Error On Myreader.close Command In Catch Part?

Jun 19, 2012

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]

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Button_click Event Will Not Stop Execute After Error Catch Using Try - Catch Statement

Apr 1, 2011

i 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.

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Show The Line Number Of The Line Of Code That Caused An Exception Within A Try...Catch Block?

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?

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Error 68 'Catch' Cannot Catch Type 'Microsoft.Office.Interop.Outlook.Exception' Because It Is Not 'System.Exception'

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]....

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Catch Error On Msg ID #?

Apr 19, 2012

With Try/Catch is there a way to catch a MSSQL error by Msg ID? I want to catch a 208 when a table is not found and then create it. I found mockup code in C# but nothing VB.NET wise as to how to grab the Error ID.

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Asp.net - How To Email Error Msg In Catch

Feb 14, 2011

I have the code below which I now need to figure out how to not only display but also email it all to my email, this way should any user encounter a error we get to see exactly what is it.

[Code]...

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C# - Ignore Error Without Using Try Catch()?

May 25, 2011

So I want to now if that possible for .NET languages to ignore error without using try catch construction ?

I can ignore warring with #nowarring 40 for example, can I ignore error ?

simply wanted to call system pause with this way

open System.Runtime.InteropServices
[<DllImport(@"msvcrt.dll")>]
extern void system(string str)
system "pause"

but got Error message

unbalanced stack. This is probably because the managed PInvoke signature does not match the unmanaged target signature. Make sure that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.

So I don't care, it works. But can I just ignore this error ? without doing weird stuff like that :

try (system "pause") catch |_->()

Ok , I solved my problem by adding CallingConvention=CallingConvention.Cdecl, but what the question was about skipping exceptions, so and I still don't know if I can do it.

So maybe I need to tell some real reason to not be down-voted hard - sometimes it's matters for program to live even with hard errors occupations, but even sometimes you don't need to catch them. You need just ignore them...

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Asp.net - Try-catch Block Still Be Throwing An Error?

Apr 23, 2010

Why would my try-catch block still be throwing an error when it's handled?[code].......

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Catch As Exception Error From Lblfeedback

May 11, 2012

i must receive that block of an error message from lblfeedback when it happens so i can sort out the problem before the phone rings. i have this block of code

[Code]....

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Catch Database Connection Error?

Feb 11, 2011

Is there a way to catch a database exception and then redirect to an error page? I have a data access class that I use to make a sql connection and then functions that call it to execute my SQL commands. My problem is that if my database is not available I cannot catch that error. Here is the code I am using in my class[code]...

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Catch Error But Still Log It And Send Email?

Feb 24, 2011

First I found that you can catch it and log it inside a catch, but this doesn't send an email. Then I found out about using the Error Signal class. That worked, however what wasn't apparent from reading, is that it treats the error like normal, so when I signal the error it goes to the custom error page still, I don't want that to happen. What I want to do is catch that error, log it, send the email, but stay on the page the error happened so I can provide special feedback. I do not want it go to the custom error page.

This is what I have and it redirects me to the custom error page.
Try
smtpClient.Send(mailMessage)
Catch smtpEx As SmtpException
errorSignal.FromCurrentContext().Raise(smtpEx)
Catch ex As Exception
[Code] .....

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Catch Media Player Error?

Jul 12, 2009

I m selecting the folder & playing all the files in the media player, of that folder. As u know folder contains all types of files including text,zip,image & so on.So I want that when URL that is assigned to Media Player is .txt,then i assign any default image from resources.I do not want to check extensions-Currently I m checking the extension of each file before paying but i dont want dat.

Public Class Form1
Public Ext_bmp As String = ".bmp"
Public Ext_jpg As String = ".jpg"

[code]......

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Catch The Error generated By Application

Sep 8, 2010

I 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.

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Clear Just The Error Input With Try Catch?

Apr 14, 2011

here is the code, i want to clear just the box with the error in it. if possible and leave the other numbers in put as they where.

Private Sub btnCalc_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalc.Click
' the following declare the values that will be used

[Code]....

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.net - Replicate Try/catch/finally Using On Error Goto

Jun 14, 2012

Suppose in VB.NET you have:

Try
Debug.Print("Trying...")
Catch ex as Exception
throw new Exception("Exception", ex)
Finally
Debug.Print("Finally...")
End Try

How would you write this using the "On Error Goto" construct? (please no questions asking why I would want to do this, just curious if it can be done).

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Catch 404 Error Exception On Web Browser Control

May 28, 2011

How can I catch 404 error on web browser control?

Try
TimeTable.Navigate("URL/File.htm")
Catch ex As Exception
TimeTable.Navigate("URL/File2.html")
End Try

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Catch An Error While Dimensioning The DA (SQL Data Adapter)?

Aug 3, 2010

I am trying to catch an error while dimensioning the DA (SQL Data adapter)Have not used Try ..Catch so pls bear with me for this juvenile crime!

Code:

Try Dim da As New SqlDataAdapter Dim ds As New Data.DataSet If conn.State <> ConnectionState.Open Then conn.Open() da.SelectCommand = New SqlCommand da.SelectCommand.Connection = conn

Catch ex As Exception MsgBox(ex.Message)Finally 'conn.Close() ' endEnd Try What I am trying to do is the catch the "object not set to an instance of an object error" and if caught I want to continue.I would like to know what to add in the Finally section?I have not tried this I would like the gurus for any inputs before I try it in my program.

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Catch Error While Inserting Data With SqlDataSource

Oct 30, 2011

I have a SqlDataSource and a GridView.

What I want to do is, while the query is executed (i.e. for inserting a data), then after the data has inserted successfully, it should appear a message sounds: "The data deleted successfully". I've solved it by using GridView1_RowDeleted method.

Now the problem is, I want to catch the error while the query is failed to executed. If the query has failed to execute, then it should appear a message: "The data failed to insert."

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Determine Error Type In Try Catch Statement

Sep 24, 2009

I'm interested in having a generic 'Try Catch' clause, with some case statements or if/than statements within the Catch part so that I can handle different error types differently. some way to get ex.Errorcode or ex.ErrorType that differentiates the different errors to a unique value.

How can this be done?

Try

'some code taht will throw an error'

Catch ex AS Exception
If ex.ErrorCode = 20 then
' Do something'

[Code].....

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Event Causing Error - Cannot Catch Exception

Apr 22, 2010

A developer has created a custom control in ASP.NET using VB.NET. The custom control uses a repeater. In certain scenarios, the rpt_ItemDataBound event is encountering a data error. My goal is rather than having the user see the yellow screen of death, give the user a friendlier error explaining exactly what the data error is. I figured I would be able to use a Try/Catch block as shown below throw the exception, however, it appears that the event has nowhere to be thrown to and stops executing at the "End Try" line.

Protected Sub rpt_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rpt1.ItemDataBound, rpt2.ItemDataBound
Try
ProcessBadData...
Catch ex As Exception
Throw ex
End Try
End Sub

In VB.NET, I can find where the repeater's DataSource is being set, however, I can not find a DataBind event. How I can capture the exception in this ASCX control so I can report it to the user. The stack trace looks like this. There is another repeater within the repeater that is actually causing the error (rptOther) and I'm able to catch the error, but I can only throw it to the rpt_ItemDataBound. How rpt_ItemDataBound is getting called without a DataBind event.

at Company.WebForms.Control.rptOther_ItemDataBound(Object sender, RepeaterItemEventArgs e)
at System.Web.UI.WebControls.Repeater.OnItemDataBound(RepeaterItemEventArgs e)
at System.Web.UI.WebControls.Repeater.CreateItem(Int32 itemIndex, ListItemType itemType, Boolean dataBind, Object dataItem)
at System.Web.UI.WebControls.Repeater.CreateControlHierarchy(Boolean useDataSource)
at System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e)
at System.Web.UI.WebControls.Repeater.DataBind()
at Company.WebForms.Control.rpt_ItemDataBound(Object sender, RepeaterItemEventArgs e)

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MDI Global Error Handling - Nothing In Try Catch Block

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?

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VS 2008 Catch Webbrowsers 404 Error & Redirect?

Jul 19, 2010

If I get to a 404 error page on my webbrowser I want it to redirect.

If 'catch webbrowser 404 error Then
Webbrowser1.Navigate ("[URL]")
End If

I have no idea how to catch the 404 error page when it happens though.

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Nested Try...Catches - If An Exception Occurs In The 2nd Sub's Try...Catch, Which Catch Gets Excecuted?

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].....

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