C# :: Throwing An Exception For A Invalid Number Of Fields In A Csv Record?

Feb 16, 2012

I am writing a parsing method for a csv record and want to throw an exception if the number of fields in the record do not match the expected length

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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 - Why Have Equals Methods Have All Started Throwing Invalid Cast Exceptions

Mar 5, 2010

Several of my overriden Equals methods have started throwing Invalid Cast Exceptions -

Unable to cast object of type 'System.DBNull' to type Common.ResolveUser'.

This occurs when binding List (of T) (where T is of type ResolveUser in this case) to a combo.

Equals Method:

Public Overrides Function Equals(ByVal obj As Object) As Boolean
Dim i As ResolveUser = CType(obj, ResolveUser)
If i.UniqueResolveID = UniqueResolveID Then Return True

[Code]......

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.net - Re-throwing An Exception From An Exception Catch?

Feb 14, 2011

catch an exception and then throw another exception? Like so:

Try
' Do operation xxx
Catch ex As Exception
' Operation xxx failed, need to execute cleanup

[code]....

The reason for doing this is that while I catch my exception on a higher level logic (to make sure I can log it properly), I need to do some actions in the event of the exception that I can only do inside my class/function.

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Asp.net - .Except<T> Is Throwing An Exception

Mar 21, 2010

I have the following code:

[Code]...

I thought at first that because during testing GetFormsByStatus() returns 0 results maybe that was causing problems, but it doesn't make sense that Except() wouldn't work if the provided list had 0 items.

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Asp.net - .Except<T> Is Throwing An Exception?

Aug 23, 2009

I have the following code:

Public Shared Function GetAvailableManufacturers() As List(Of Manufacturer)
'first get all the live orders and extract their mfrs'
Dim sos As List(Of OrderForm) = GetFormsByStatus(StockStatus.Building)
Dim unavailableMfrs As New List(Of Manufacturer)

[code]....

My idea to get available manufacturers was to get a list of all the manufacturers in my open forms, then get a list of all manufacturers and exclude all the manufacturers in the first list, illustrated like so (pseudo):

List A: {1,2,3,4,5,6,7,8,9,10}
List B: {5,7,10}
Result: {1,2,3,4,6,8,9}

I have set up my Manufacturer class according to this article so that it can be compared, but I'm still getting this error:

Unable to cast object of type '<ExceptIterator>d__92'1[csCore.Manufacturer]' to type 'System.Collections.Generic.List'1[csCore.Manufacturer]'.

I thought at first that because during testing GetFormsByStatus() returns 0 results maybe that was causing problems, but it doesn't make sense that Except() wouldn't work if the provided list had 0 items.

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Array Throwing An Exception?

Feb 24, 2012

The following sub is throwing a"Object reference not set to an instance of an object."

exception.
For Each element As Song In modFiles.getSongs()
Dim col(2) As String

[code].....

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Throwing Exception And Figuring It Out Later?

May 19, 2011

I'm throwing an exception that looks like this...

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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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Running CLR Profiler Throwing An Exception?

Nov 23, 2009

I have a problem with running CLR profiler. It throws an exception: See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.

[code]...

I started out with a console application but half way I switched to windows form in the application properties. Does that have something to do with it? I do this because I don't want to show the console. My application takes about 57 miliseconds to run. Maybe it's too fast for the clr profiler ?

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VS 2005 Why Is Code Throwing Exception

Jan 20, 2010

Imports Excel = Microsoft.Office.Interop.Excel
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)

[code].....

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Ternary Operator IIf Throwing Strange Exception

Mar 30, 2011

I am having a weird problem. IIf is messing up when I am working with an array. Apparently it is checking my else statement even though it isn't activated. Here is some code that demonstrates the issue:[code]

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Type.GetType Throwing Null Exception

Jan 25, 2012

I am trying to get the type of a class by calling Type.GetType(), however it is throwing an null reference exception. I'm supplying the fully qualified name of the class as a string, I'm not sure what I am doing wrong. Here is what I am doing:Type.GetType("The.Name.Space.TheClassName")That is the fully qualified name of the class, it works fine for import statements.

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VS 2005 SQL Select Statement Throwing Exception?

Jan 24, 2010

i did this Dim strUser As String = txtacno.Text cmd1 = New OleDbCommand("Select * from BookDetails Where AccountNo =@acno and MemberId=@memid", con)

[Code]...

the select query that i used in the above code,i have use and in it;so is this a valid sql statement?

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Why Is Code Prevents From Throwing DBConccurecy Exception

Nov 16, 2009

I have written a small application perform CRUD operations on a Designations table. User search a Designation by Index and can make changes and the updates. I cannot see anything incorrect in my SQL and SQL works perfectly fine. Since i've created my Dataset using the desiner it automaticaly added the Optimistic concurrecy handling to the Dataset, therefore if an update fails it shold throw the DB conccurency exception.That's where the problem is, it doesnt throw the exception, application can retreive can update also fails to update on conccurency violation but when it happense it doesnt show the exception..... since code is long and have BLL and Presentations layers i've added a link you should be able downlaod the code + DB...

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Display Record From Table To Gridview On Page Load And Also Search Record For Particular Fields Using Textbox.

Jan 23, 2011

My database : table1

ID FIRSTNAME AGE
1 Sumit 22
2 Sanjeev 23

i have gridview 1 and textbox1 and button1 i want when pages load the gridview displays the all records from table1 and also ...i i wanna search record for firstname by typing sumit in textbox1 and click on button1 then in gridview the record of sumit will be shown ..by default gridview display alll records from table1 How to do this My Selct Query is below : but it doesnot display all record ...but it can display record if you search for a particular record .

[Code]...

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Class Calling Itself And Throwing Stock Overflow Exception?

Mar 11, 2010

I have a class as below in VB.NET. The issue is class calling itself. So vb.NET throwing Stock Overflow exception. But the same class is working fine in VB6 version of code in VB6.How to resolve this issue?

[code]...

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Shell Command Throwing A File Not Found Exception?

Jul 16, 2009

I am trying to convert one of my unix text files to a dos text file. I am using the following command:

Shell(string.format("unix2dos {0}", sFileCompletePath))

I've already added the unix2dos command in my environment path on the server.But when I execute the above mentioned command I get a FileNotFound exception even when the file is located on the disk.

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Check The Folder To Search For The File, And If It's Not There, Go To The Next Step Without Throwing An Exception?

Apr 24, 2010

I'm doing a uni assignment and my application has to go to a specific folder and locate a file for data.The folder has 300+ files in it with a specific format for the naming of the files ie. the program goes to the folder looking for one specific file that has been derived from a different function and user input in the form.The program works fine when the file that it is searching for is there, but I keep getting a FileNotFoundException whenever the file that it's looking for is not there.I don't want the application to throw an exception every time the file doesn't exist because the program needs to return back to the loop to see if the next file is there or not.And so the loop continues until it's found all data and loaded it all into an array.How can I do a check of the folder to search for the file, and if it's not there, go to the next step without throwing an exception?

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[2008] Cast Bindingsource.current To Datarow Throwing Exception?

Jan 14, 2009

im dr As DataRow = CType(Me.ProductBindingSource.Current, DataRowView).Rowbut I get the error saying:

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EPPlus Throwing Argument Exception (Negative Row And Column Numbers Are Not Allowed)

Oct 31, 2011

I'm using EPPlus 2.9.0.1 with Visual Basic.I have a DataTable with 35 Rows and 4 Columns and the code below:[code]When method 'LoadFromDataTable' is called, I get an ArgumentException (Negative row and Columns numbers are not allowed). I don't have negative numbers in row or column numbers, as far I know.

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Code Is Not Detecting The Cell As Null And The Table Adapter Is Throwing The OleDb Exception?

May 25, 2011

I have this piece of

Private Sub FORNECEDORESBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FORNECEDORESBindingNavigatorSaveItem.Click[code]....

The idea is to detect if the cell of the first datagrid column is null and display the message. However, the code is not detecting the cell as null and the table adapter is throwing the OleDb exception.

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Throwing Exception Error - Calculate The Ever Popular Mortgage Payment And Amortize The Loan In A List Box

May 23, 2010

Number of downloads: 81This program is supposed to calculate the ever popular mortgage payment and amortize the loan in a list box. I keep throwing this error "Missing Member Exception" and can not find out how to fix it anywhere. Because of the error I can't even see if I can even get a calculation in the text box, let alone if the amortization will run. The purple text is where the exception is.

Public Class HarlessSmithIA3

Dim LoanAmt, Int, Result, Term As Double
Dim txtIntRate As New Object
Dim txtLoanAmount As New Object
Dim txtLoanTerm As New Object
Dim txtMonthlyPayment As New Object

[CODE]...

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Add New Record / Save So Record Number Of Number Will Work?

Jun 2, 2011

I am trying to add a new record everytime i do my navigation gets all messed up I also need an update button... I would like so when i hit new record the record of will be(ex. If Im adding record number 30 it will say record 30 of 30, hit add new it will say record 31 of 31) my code is below.

'Class File
Module Class1
Public MasterConnection As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=db1.mdb;Persist Security Info=False;")

[code].....

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Invalid Cast Exception?

Feb 16, 2011

see from the following function why I would be getting an "Invalid Cast Exception"? More specifically this is the error "Conversion from string "yyyyMMdd" to type 'Integer' is not valid." I am trying to convert a DateTime value from the database to a String with the format "yyyyMMdd" so for example October 22, 1985 would be "19851022".dbReader(fieldName).ToString("yyyyMMdd")Here is the entire function ...

Private Function GetDBReaderDateValue(ByVal dbReader As IDataReader, ByVal fieldName As String) As String
If dbReader(fieldName) Is DBNull.Value Then

[code].....

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Invalid Operation Exception?

Apr 16, 2007

have a form onto which i've place a menu item called Exit. When I click the Exit, i expect it to close the entire application.Here is the code

Private Sub mnuExitApp_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles mnuExitApp.Click
Application.Exit()

[code].....

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Office Automation :: "FinalReleaseAnyComObject" Throwing Exception If Handler Is Linked

Jul 30, 2010

the FinalReleaseAnyComObject sub seems to be failing to do precisely what it is intended to which seems odd.

Code:
'Adapted From: http://www.xtremevbtalk.com/showthread.php?t=160433
'-------------------------------------------------------------------
Public oApp As Excel.Application
Public oWB As Excel.Workbook

[code]....

Exception Message: "Exception has been thrown by the target of an invocation."Inner Exception Message: "COM object that has been separated from its underlying RCW cannot be used."The exception is thrown when stepping to the next FinalReleaseAnyComObject within MySubFinal, not within FinalReleaseAnyComObject nor upon returning to MySubFinal from it. As noted in the code, if I bypass the sub and just in-line it then it completes without exception, which suits me fine. In testing I also noticed that if I comment out Worksheet_Change, i.e. declare WithEvents but no associated handler, then I also get no exception, but of course this entirely defeats the purpose and is unacceptable.

In case it matters or if anyone is willing to attempt to reproduce this, this is in the context of a COM Add-In where MySubInit is called from OnStartupComplete and MySubFinal is called from OnBeginShutdown. I am working with VB 2008 Express and Excel 2007.

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Invalid Cast Exception On Same Type?

Apr 15, 2012

i know this may seam odd but I'm getting an error navigating through a datagrid of an invalid cast. The trouble is it is of the same types!! I working on customising some Sage code and in the form there is a datagrid that is populated by a series of Sage.Accounting.Stock.TraceableSOPAllocationItems (a batched stock item allocated to an SOP).

I want to give the user some further information on each item so they can decide which batch and bin to use. I want to go through each item in the grid and then go find this extra information for it. the trouble is when I go to navigate through, My VB.Net code throws the error.InvalidCastException was unhandled by user code, Unable to cast object of type 'Sage.Accounting.Stock.TraceableSOPAllocationItem' to type 'Sage.Accounting.Stock.TraceableSOPAllocationItem'.

[Code]...

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Invalid Operation Exception - Only On Other Machines?

Feb 15, 2011

I have an application that I've tested on multiple machines. It runs perfectly on the development machine, but no others. I have itextsharp.dll included and registered in the installer (I used NSIS). On one of the other machines, this was retrieved from the system log:

Application: Evaluation creator.exe Framework Version: v4.0.30319

Description: The process was terminated due to an unhandled exception.

Exception Info: System.InvalidOperationException

[Code]...

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Invalid Operation Exception Was Unhandled

Aug 9, 2010

please i have this exception in my project which i do not know how to solve it.The problem i think is not from my codes but it is from a tool box item i am using which is giving me that error if i delete that tool box item from my form this exception is not thrown.The item name is GrFingerXctrl class. This item will enable me to integrate a biometric fingerprint reader in my application.it is from an SDK i downloaded from [URL].

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