VS 2008 Error Called "OledbException Was Unhandled-operation Cannot Be Performed"

Apr 1, 2010

i am getting an error called "OledbException was unhandled-operation cannot be performed" when i entered the values in the textboxs and click button3.When i build this code,it is succeeded.but at the runtime when i click button3 after giving the values in the textboxes this error occurs. below is the code i used....

[Code]...

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Error - OleDbException Was Unhandled

Sep 16, 2009

Dim conn As New OleDb.OleDbConnection
Dim ds As New DataSet
Dim da As OleDb.OleDbDataAdapter
Dim sql As String

[code]....

The above code stops running at the point of the da.fill line with the error that the specified table does not exist.In my limited knowledge so far to me it looks like the operators table exists as it showing in the Solution Explorer.

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Error: OleDbexception Was Unhandled

Oct 11, 2011

i have a probleam with my coding.The error which i got is olehDBexeception was unhandled.In my coding here i am developing function use to subtract number in database based on user input.I dont how to solve this error? I also highlight the line cause an error and also i attach picture of the probleam.

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'open db connection'

[code]....

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Error: Mscorlib: The Requested Operation Cannot Be Performed On A File With A User-mapped Section Open

Apr 6, 2012

I've written a VB.NET program for a client that stores all of its data in XML files. I use the XMLReader to read the data into a dataset. When I run the sub to encrypt the XML file, I'll get the following message: Error: mscorlib: The requested operation cannot be performed on a file with a user-mapped section open.

It doesn't happen all the time, so I know it does work. But on occassion, I'll get this message. I've been all over the forums and I've tried everything I've read to try and stop this error.

I close the reader object and set it equal to Nothing. I've even tried using DoEvents to make sure the object finished closing before running the Encrypt sub. Nothing has helped.

I develop on a x32 PC. It works fine on the development machine. But then, when the client runs it on a x64 PC, he gets these errors. Could the x64 system really be running so fast that the .Close() and the = Nothing and evern the .DoEvents() can't keep up?

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DB/Reporting :: OleDbException Was Unhandled Error

Apr 11, 2008

i debug my code it says that i have a syntax error in Insert into statement and it highlights the

da.Update(ds,"MovieData") command ?? Why isn't this working?

[Code]...

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OleDbException Was Unhandled Syntax Error In UPDATE Statement?

Mar 29, 2012

I'm getting the error "Syntax error in UPDATE statement." When I run it and place something in the txtPass box. However I have checked this everywhere and cant seem to find to find the problem. Everything else works fine except for that part.

Public Class Form6 Private Sub btnView_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnView.Click

[Code]...

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Syntax Error In INSERT INTO Statement, OledbException Was Unhandled

Mar 11, 2010

im trying to add a new records to database access but when i click the button submit it say's Syntax error in INSERT INTO statement, OledbException was unhandled da.Update(ds, "MSHS") = syntax error INSERT INTO

here's my code
Public Class StudentRegistrationForm
Dim inc As Integer
Dim con As New OleDb.OleDbConnection

[Code].....

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OleDbException Is Unhandled ,Syntax Error In INSERT INTO Statement. When Update Into MS Access

Jul 9, 2010

Dim cBuilder
As
New OleDb.OleDbCommandBuilder(dAdapter)

Dim dsNewRow
As DataRow

[CODE].....

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System.Data.OleDb.OleDbException Was Unhandled By User Code ErrorCode=-2147217900 Message=Syntax Error In INSERT INTO Statement

Jul 8, 2011

I cannot seem to figure out why VB keep throwing me this exception but here is the code

[Code]...

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VS 2010 Da.fill(ds) - Error "OleDbException Was Unhandled"

Mar 5, 2011

In my connection code, I am getting the error: OleDbException was unhandled

[Code]...

I've tested this with .mdf and .sdf database files, both with the same error, thinking that the error has do to with the file type. If there is anymore information I could give you, I'd be glad to.

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OleDb Error "OleDbException Was Unhandled"

Jul 22, 2011

i'm getting an error wen i click "ok" for my password. here is the error that i'm getting: OleDbException was unhandled 'D:Microsoft Visual Studio 2010ProjectsFor My DaughterFor My DaughterFor My Daughter.mdb' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides.

[Code]...

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Error Is: Invalid Operation Exception Was Unhandled

Feb 6, 2010

i have a datagridview that show an access database also there is toolstrip menu i defined the datasource and everything is fine except that when i run the application and edit anything and when i press the save button on the toolstrip an error appear and highlight this: Me.TableAdapterManager.UpdateAll(Me.My_phone_numbersDataSet)

and the error is: invalid operation exception was unhandled

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.net - Process Performance Counter Is Disabled So The Requested Operation Cannot Be Performed

Mar 6, 2012

I don't see why this doesn't work. I have gone into the registry and removed the registry key below and still no joy. The error arises at the For Each Loop.

[Code]...

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Error:"InvalidCastException Was Unhandled Overload Resolution Failed Because No Public '=' Can Be Called With These Arguments

Nov 2, 2010

I'm implementing following code in VS2010:

If xl.cells(1, contacolonna).Borders(Excel.XlBordersIndex.xlEdgeRight).LineStyle <> Excel.XlLineStyle.xlContinuous Then
MsgBox("hello")
End If
or following

[code]....

but in both cases VS returns following error:"InvalidCastException was unhandled Overload resolution failed because no Public '=' can be called with these arguments:'Public Shared Operator =(a As String, b As String) As Boolean':Argument matching parameter 'a' cannot convert from '__ComObject' to 'String'. "

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.net - OleDBException Was Unhandled

Apr 9, 2010

I am trying to debug my program and I am getting an OleDBException Was Unhandled. It then goes to the path where the error is located. The executable is listed in the bin file and I have re-built and built the application several times. The application is supposed to extract data from an external MS Access database. Note my code:

Public Class frmSpanishFoodStoreInventory

Private Sub StoreInventoryBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles StoreInventoryBindingNavigatorSaveItem.Click

[code]....

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DataGridView OleDbException Was Unhandled

Nov 7, 2009

i tried to figure it out few hours but i getting no way to solve it. I think i have sucessfully bind the datatable from the datagridview but just couldn't get it to update to access mdb table. It showed "Syntax error in Update statement" whenever i press the Button1.

[Code]....

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LogIn Form (OleDbException Was Unhandled)?

May 26, 2012

HERE's my code:
Private Sub Ok_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

[code].....

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Changing A PictureBox Image On A SerialPort_DataReceived Event Yields Runtime Error: Invalid Operation Exception Was Unhandled?

Nov 28, 2009

Any thoughts on what might cause a thread error like this?Error:InvalidOperationException was unhandledCross-thread operation not valid: Control 'Form1' accessed from a thread other than the thread it was created on.

Relavent Code:
Private Sub SerialPort_DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort1.DataReceived

[code].....

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'System.Data.OleDb.OleDbException' Was Unhandled When Database Connection Is Opened?

Dec 18, 2011

During Runtime when it tries to open the connection it throws up this error.System.Data.OleDb.OleDbException was unhandled'

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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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Click Save - Invalid Operation Exception Was Unhandled

Feb 1, 2012

Keep getting a exception when I click one save.
"Invalid Operation Exception was unhandled"
Basically it just needs to save all my text in my text boxes in a XML document.

Imports System
Imports System.IO
Imports System.Xml
Imports System.Xml.Serialization
<Serializable()>
[Code] .....

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C# - OleDbException (0x80004005): Not Specified Error

Jun 25, 2010

I created a button (Next) to navigate in a Table called CHAPTERS; My problem is that the button work Two, and sometimes three times. After that I get [Not specified error]. [Code]

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VS 2008 Form OnClosing Even Called After Runtime Error?

Jan 3, 2011

When an application "crashes" when the form is forced close is the closing even called and executed or is the process just terminated?

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[2008] Error: InvalidOperationException Was Unhandled

Mar 5, 2009

I am having the following error in VB 2008:System.InvalidOperationException was unhandled Message="An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object."

[Code]...

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OleDbException Error When Trying To Insert Row In GridView

Jul 27, 2009

(I work in VS2005, Access DB, C#). I was trying to insert a row in a GridView and the following is the code. When I run this page, it doesn't display the existing data and in the footer row when I click on 'Insert' after entering the data, I get the following error:
OleDbException was unhandled by user code
Index or primary key cannot contain a Null value.

Code:
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "[URL]">
<script runat="server">
protected void lbInsert_Click(object sender, EventArgs e) {
AccessDataSource1.Insert();
[Code] .....

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VS 2005 Error : OleDbexception Was Unhandeled

Oct 11, 2011

i have a probleam with my coding.The error which i got is olehDBexeception was unhandled.In my coding here i am developing function use to subtract number in database based on user input.I dont how to solve this error , please some help me to correct my coding here. I also highlight the line cause an error

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'open db connection'
Dim Con As New OleDb.OleDbConnection("Provider=SQLOLEDB ;Data Source=Danawa;Initial Catalog=Store;Integrated Security=SSPI ")

[code]....

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VS 2008 Error - Argument Exception Was Unhandled

Feb 8, 2010

Having created a database and testing it I get the following error message,

ARGUMENT EXCEPTION WAS UNHANDLED

Public Class Form1
Private Sub AddressBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddressBindingNavigatorSaveItem.Click

[code]....

My action during the test was to fill in a field, save it then changed the information within, only to get the above message.

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VS 2008 Stuck At Error NullReferenceException Was Unhandled

Mar 26, 2011

[code] this is my code n i want to store data at runtime in the my database.i used data base as an access07 and my platform is vb.net..Now come to the point when i run the project it terminates when i'm inserting my data in the access file.[code]

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[2008] Error Message Saying NullReferenceException Was Unhandled

Jan 19, 2009

My code

Dim pointer As Integer, index As Integer
For pointer = 1 To 6
For index = 0 To 5999

[CODE]...

All i get is an error message saying NullReferenceException was unhandled the bold part is were it says the error is

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VS 2008 Error Operation Is Not Valid Because It Results In A Reentrant Call To The SetCurrentCellAddressCore Function

Oct 27, 2009

What I am trying to achieve is if there is an error in cell 1 of the current row it returns to that cell. The code below tries to achieve that, but I get an error message thus:Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function.

Private Sub RoomPricingDGV_CellEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles RoomPricingDGV.CellEnter
If e.ColumnIndex = 2 And cellerror = True Then

[code]....

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