[2008] Cast Bindingsource.current To Datarow Throwing Exception?
Jan 14, 2009im dr As DataRow = CType(Me.ProductBindingSource.Current, DataRowView).Rowbut I get the error saying:
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.net - Multiple Exception Throwing With Custom Exception Class?
Jun 19, 2012i 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?
.net - Why Have Equals Methods Have All Started Throwing Invalid Cast Exceptions
Mar 5, 2010Several 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]......
VS 2008 - Invalid Cast Exception Was Unhandled
Aug 13, 2009I have declared two variables as strings strDob and strCurrentDate, Both Variables are for storing dates. StrDob is for storing Date of Birth and second is for Present date. and am executing the following code
If DateValue(strDOB) > DateValue(Date.Today) Then
and getting the error like
Invalid CastException was unhandled
Conversion from string "19/09/1987" to type 'Date' is not valid.
Error in the following code also:
iAge = (CInt(Abs(DateDiff("d", strCurrentDate, strDOB)) / 365))
Invalid CastException was unhandled
Argument 'Date1' cannot be converted to type 'Date'.
Here I need both variables as string itself. because the Dateofbirth is getting from three comboboxes.
.net - Re-throwing An Exception From An Exception Catch?
Feb 14, 2011catch 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.
Asp.net - .Except<T> Is Throwing An Exception
Mar 21, 2010I 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.
Asp.net - .Except<T> Is Throwing An Exception?
Aug 23, 2009I 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.
Array Throwing An Exception?
Feb 24, 2012The 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].....
Throwing Exception And Figuring It Out Later?
May 19, 2011I'm throwing an exception that looks like this...
View 3 RepliesObject Array Throwing An Exception
Feb 24, 2012I 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)
Running CLR Profiler Throwing An Exception?
Nov 23, 2009I 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 ?
VS 2005 Why Is Code Throwing Exception
Jan 20, 2010Imports Excel = Microsoft.Office.Interop.Excel
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].....
Datagridview - Bindingsource Filter Cast Date To String
Dec 8, 2010I'm using the filter method of Binding source in VB.net to filter results in a DataGridView based on the text in a search box. However, the idea of this search, is that it shows a row if any of the cells contain the text. So my filter string ends up looking like this:
[Code]...
Ternary Operator IIf Throwing Strange Exception
Mar 30, 2011I 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]
View 2 RepliesType.GetType Throwing Null Exception
Jan 25, 2012I 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.
View 2 RepliesVS 2005 SQL Select Statement Throwing Exception?
Jan 24, 2010i 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?
Why Is Code Prevents From Throwing DBConccurecy Exception
Nov 16, 2009I 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...
View 1 RepliesC# :: Throwing An Exception For A Invalid Number Of Fields In A Csv Record?
Feb 16, 2012I 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
View 3 RepliesClass Calling Itself And Throwing Stock Overflow Exception?
Mar 11, 2010I 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]...
Shell Command Throwing A File Not Found Exception?
Jul 16, 2009I 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.
Invalid Cast Exception Was Unhandled - Unable To Cast Object Of Type 'System.String' To Type 'System.Windows.Forms.TextBox'
Feb 9, 2012Private
Sub cmdExit_Click(ByVal
sender As System.Object,
ByVal e
[code]....
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, 2010I'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?
View 2 RepliesEPPlus Throwing Argument Exception (Negative Row And Column Numbers Are Not Allowed)
Oct 31, 2011I'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.
View 1 RepliesCode Is Not Detecting The Cell As Null And The Table Adapter Is Throwing The OleDb Exception?
May 25, 2011I 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.
VS 2010 Get Current Row BindingSource?
Mar 31, 2010I want to get the current row in a BindingSource. I had a working method, but then i turned on sorting in the binding and then the method get's the wrong row everytime.
[Code]...
Throwing Exception Error - Calculate The Ever Popular Mortgage Payment And Amortize The Loan In A List Box
May 23, 2010Number 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]...
Bindingsource.position/current. After Data Been Updated?
Oct 13, 2010Bindingsource.position/current. after data been updated
View 8 RepliesCast/convert From List(Of DataRow) To List(Of String)?
May 22, 2012I'm trying to solve a problem regarding types of list. First of all I have a stored procedure in my DB which does a select of a single column and I try to proceed it in my app in VB. By making a method function I declared a DataTable that loads through the SqlCommand(with the CloseConnection behavior). After that I publicly declared a List(Of String) which needs to be populated with the rows/items from the stored procedure that is on the way. Below is my snippet of the code:
Dim dt As New DataTable()
Try
If conn.State = ConnectionState.Open Then
[Code]....
It's LPrefix = collection.Cast(Of String)() where I get an exception error telling me that I can't really convert it. The old fashion way is to iterate with for/for each loop but that's not what I want for best use of performance especially if the list will have thousands of rows from a single column. So basically, I want to insert those items from that DataTable to the List(Of String) without For/For Each loop.
Running on VisualStudio2010 Ultimate, .NET FrameWork 4.0.
.net - Linq To SQL Cast Exception?
Sep 9, 2010I am trying to Delete an entity but am having trouble with an InvalidCastException. The debugger breaks at the Next statement in the ForEach loop.My entity class is called Material.
Dim materialsTable As Table(Of Material) _
= (New DataContext("Server=.SQLEXPRESS; Database=Materials; Trusted_Connection=yes;") _
.GetTable(Of Material)())
[code]....
Invalid Cast Exception?
Feb 16, 2011see 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].....
