Get All Primary Keys Which Generated Exception From Sql Exception Object

Feb 10, 2010

I have written a program which uses a SQL exception class and then use it show custom messages for the primary key violation. Also i want the primary key value that caused the violation. How can i get all the primary keys which generated the exception from the sqlexception object.[code]

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Catch An Exception And Throw A New Exception Which Wraps The First Exception As An Inner Exception

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:

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Table Doesn't Have A Primary Key Exception?

Jun 8, 2011

So I have a program that I am converting to .NET FW 3.5 and I am getting the titled exception on the following line:If IsNothing(dsTopPI.Rows.Find(profile.Item("GEMSID"))) Then Continue For

which is in a for each loop. The thing is, I have set the primary key and when I put in the following code:Dim columns() = DSTop30Profiles1.DTtop30profiles.PrimaryKey Console.WriteLine("Column count: " & columns.Length.ToString)For a = 0 To columns.GetUpperBound(0)Console.WriteLine(columns(a).ColumnName & " - " & columns(a).DataType.ToString)Next

I get this in the output:Column count: 1 GEMSID - System.Int32

That would seem to indicate that there is in fact a primary key, right?

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Catch An Exception Generated On Another Thread?

Jan 15, 2011

How do you catch an exception generated on another thread

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Exception Is Generated While Adding Owc11.chartspace To Panel At Runtime?

Feb 14, 2011

Exception is generated while adding owc11.chartspace to panel at runtime.

code is:

Imports Microsoft.Office.Interop.Owc11
Public chartspace1 As ChartSpace
chartspace1 = New ChartSpace
Me.Panel3.Controls.Add(chartspace1)

Exception :Unable to cast COM object of type 'Microsoft.Office.Interop.Owc11.ChartSpaceClass' to class type 'System.Windows.Forms.Control'. Instances of types that represent COM components cannot be cast to types that do not represent COM components; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface.

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DateTimePicker Exception ArgumentOutOfRangeException - Up And Down Keys To Change The Month

Nov 22, 2006

I have an unbound DateTimePicker Control on a form. When the form loads the control shows 2005 - 01 as expected. I can use the arrow keys left and right to switch between highliting the year or the month. Pressing the up and down keys to change the month doesn't work an exception is raised. I don't understand why. I started a new project. Just added a DateTimePicker and the following code.

[Code]....

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Catch' Cannot Catch Type 'Object' Because It Is Not 'System.Exception' Or A Class That Inherits From 'System.Exception'

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]....

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LinqToSql Contains On Multi-column Primary Key From In-memory List Containing Primary Keys

Aug 23, 2011

On a client i have an anonymous list containing a multi-column primary key previously selected from the DB.Then i need to select all the records from the DB that equals the primary key list i have stored in the memory.[code]

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Error - A First Chance Exception Of Type 'System.Exception' Occurred In Microsoft.VisualBasic.dll

Sep 2, 2009

I have a large project where we have 2-3 dll projects that are converted from VB6 to VB.NET. We have fixed all the issues that caused compilation errors, and most of obvious issues in running, so now we have basically a program up and running. The exe is created from scratch in VB.NET, using a lot of functionality from the converted dll's (including GUI forms). What I wonder is when I run the program in debug mode, I get a bunch of warnings in the "Immediate Window" saying:

A first chance exception of type 'System.Exception' occurred in Microsoft.VisualBasic.dll

...and some of other type (but most of them in Microsoft.VisualBasic.dll).I was wondering if this is common in projects converted from VB6, or if it is caused by bad design in our code...

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Exception Found - Cannot Access A Disposed Object. Object Name:'System.Net.Sockets.NetworkStream'

Dec 31, 2009

Occasionally I encountered this exception message while trying to download file from a server using System.Net.FtpWebRequest and System.Net.FtpWebResponse Object.

Download a file.ftpRequest_DL.Method = WebRequestMethods.Ftp.DownloadFile get the response object
Dim ftpResponse_DL As FtpWebResponse = CType(ftpRequest_DL.GetResponse, FtpWebResponse)

[Code]...

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C# - How To Solve COM Exception Class Not Registered (Exception From HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))

Jul 2, 2010

When I try to create a instance of a COM class it throws an exception as Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))

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C# - Solve COM Exception Class Not Registered (Exception From HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))?

Sep 30, 2009

When I try to create a instance of a COM class it throws an exception as Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))

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Error: System.NullReference Exception: Object Reference Not Set To An Instance Of An Object

Jan 5, 2010

I am getting this error when I try to print my report. Here is my print code.

Private Sub PrintToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PrintToolStripMenuItem.Click
Dim Print_Dialog As New PrintDialog

[code].....

Here is my error: System.NullReference Exception: Object reference not set to an instance of an object.

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Orignial Exception Type Be Found In A Rethrown Generic Exception?

Apr 14, 2011

I'm trying to catch a user defined permission exception - i.e. a user does something their level of system access won't allow, permission exception is thrown. My problem is, the exception is caught and then rethrown as a genertic System.Exception.Is there any way I can deduce the original exception type, without resorting to string comparisons, like if ex.ToString.Contains("Permission denied"

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When Catching A General Exception, How To Determine The Original Exception Type

Jan 11, 2010

When catching an exception in .net, you can have as many type-specific exception blocks as needed. But I usually try to have at least one "general" exception catch block. But is there a way to get the type of the "real" exception thrown that is caught by the generic exception handler, perhaps using reflection?For example, if I have

Catch ex As System.ServiceModel.FaultException(Of InvalidUser)
ProcessModuleLoadException(Me, ex)
Catch ex As System.ServiceModel.FaultException(Of SQLExceptions)

[code].....

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Get The Error 'NullReference Exception' - Object Reference Not Set To An Instance Of An Object?

Feb 7, 2011

When the following executes, I get the error 'NullReference Exception' - Object reference not set to an instance of an object. TestClass has Get and Set methods for the integer property TestWord.How should the following be changed to let me set TestWord in six elements of TArr?

Dim TArr(5) As TestClass
For i As Integer = 0 To 5
TArr(i).TestWord = i * 10
Next

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.net - Multiple Exception Throwing With Custom Exception Class?

Jun 19, 2012

i have about 20 possible exception messages that i want thrown when an error occurs.i need somthng like this when catching the exception

Try
' do domthing
Catch ex As CustomInvalidArgumentException
'do domthing

[code]....

do i have to create a class that inherits from Exception for each type of exception?

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.net - OleDB Exception : Can-not Find Installable ISAM Exception

Jul 28, 2011

I have the following code :

Imports System.Data.OleDb
Private Sub getData()
Dim connStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:

[Code].....

Exception Text : Can-not find installable ISAM.

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Create A Custom Exception Without Inheriting System.Exception?

Dec 26, 2009

Is there anyway to create a Custom Exception without inheriting System.Exception?

my reason is that they have a lot of methods which i do not wish my Class to have.

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Triggers - Transaction Count Exception In (SQL Exception)

Nov 27, 2009

I am getting below exception when i am going to enter record in a table through StoredProceduer of sqlserver i have a field which i need u update immediately after insert of new record in table. for that i created a sotredprocedure in which i wrote insert command first and after that i wrote a update command for same recored but it gave me below error SQlException: Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previous count = 1, current count = 2. Uncommittable transaction is detected at the end of the batch. The transaction is rolled back. Some Error in stored procedure execution

[Code]...

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Exception - .NET - Object Reference Not Set To An Instance Of An Object

Jun 10, 2010

I get this error when I run my VB.NET program with a custom DayView control.

***** Exception Text *******
System.NullReferenceException: Object reference not set to an instance of an object.
at SeaCow.Main.DayView1_ResolveAppointments(Object sender, ResolveAppointmentsEventArgs args) in C:UsersDanielMy ProgramsVisual BasicSeaCowSeaCowSeaCowMain.vb:line 120

[code]....

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Object Array Throwing An Exception

Feb 24, 2012

I am getting an exception when running the following code.

Public Function getSongs() As Song()
' Dim dir As New DirectoryInfo(Application.ExecutablePath)
Dim dir As New DirectoryInfo(directory)

[Code].....

I get an uncaught exception that says:

"Object reference not set to an instance of an object."

The song object has a:

Public Sub new(By Val filename as String)

... sub that sets a variable and retrieves file info (this code works)

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Object Null Reference Exception?

Feb 10, 2010

write know i am gettin null reference exception due to followin code
Imports System.Xml
Imports System.IO

[code].....

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Random Object Disposed Exception?

Dec 8, 2009

I seem to be getting a random abject disposed exception.Sometimes it occurs when I move from 1 form to another, sometimes it happens when a timer activates.It says the object name is "". How am I supposed to look for an object called nothing. I'm using vb express 2010 on windows 7.

Code:
System.ObjectDisposedException was unhandled
Message=Safe handle has been closed
Source=mscorlib

[code]....

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An Error Occurred Creating The Form. See Exception.InnerException For Details. The Error Is: Object Reference Not Set To An Instance Of An Object?

Apr 30, 2009

WTF, here's my code...

Public Class Form1
Dim BIT01 As Integer = BIT_01.Text
Dim Value As Integer = TB_OutPut.Text

[code].....

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Asp.net - CA2000: Object Is Not Disposed Along All Exception Paths

Aug 23, 2011

I am having trouble trying to figure out why I'm getting this warning in following code.

CA2000 : Microsoft.Reliability : In method 'Encryption64.Decrypt(String, String)', object 'des' is not disposed along all exception paths. Call System.IDisposable.Dispose on object 'des' before all references to it are out of scope.

[Code].....

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Object Disposed Exception / Multiple Forms

Jan 21, 2010

I am using VB 2008 Express Edition.I have an app that has 2 forms (will be adding more). Button click on form1 opens form 2. The first time I run my app everything works fine, but when I click the close 'X' button on form 2 and try opening form 2 again by clicking the button on form 1, VB throws a Object Disposed Exception, Cannot access a disposed object.[code]

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Serialize An Object, Exception Because Form Is Not Serializable

Jul 28, 2010

I have a class called Truck and a form called frmTruck I have some code like this in a method. It recieves obj as Truck

Dim ms As New MemoryStream(1000)
Dim bf As New BinaryFormatter(Nothing, New StreamingContext(StreamingContextStates.Clone))
bf.Serialize(ms, obj)

To simplify my code, I have basically something like this for frmTruck:

public class frmTruck
private truckValue as Truck
public sub DoSomething()

[code]....

During the LoadTruckFromDatabase function I call the SerializeTruck method, here everything goes fine. But when I call the SerializeTruck just before End sub of DoSomething, it goes wrong I get an exception saying that frmTruck is not serializable My truckinstance doesn't have any references to frmTruck...

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VS 2010 Necessary To Close Object When Exception Occur

Aug 21, 2011

[code]Is it necessary to close object when exception occurs? if yes please correct above code i m confused where to close the response object

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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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