VS 2010 InvalidOperationException (reentrant Call To SetCurrentCellAddressCore)?
Feb 16, 2012
I've searched the Internet and found this to be a common problem, but couldn't find an example like mine, so didn't manage to find a solution that works.I have a DGV where the columns are added at design time and the rows are added programmatically using a simple loop. Here it is:
vb
For Each iRow In iDS.Tables(0).Rows
If iRow("rIndex").ToString = rIndex.ToString Then
myDataGrid.Rows.Insert(count)
myDataGrid.Item(0, count).ReadOnly = True
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
I have a datagrid with a lot of column, but only a few group of it can be edited by user.On a CellEndEdit event i update automatically the database with the new value when the user modify one cell and then I must recharge the dataset of the dataview.If I modify a cell and then use tab or enter to move to the next one everithing is ok, but if I change a cell and then mouse_click on another one i get thi error when i recharge the dataset:
Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function
I've only build simple applications that calculates something, like nuclear half life or ice cream prices, by using some values entered into text boxes by the user.
At the moment I'm trying to build a simple edition of Notepad because I want to learn how to read and write to .txt files. And I followed a web example at [URL]
So far I've only written the reading part and my code looks like this:
Imports System.IO Public Class Writer Dim FileName As String = Directory.Text + File.Text Dim TextLine As String
[Code]....
The message I get when I click "Debug" is saying: InvalidOperationException was unhandled
InnerException: Use the "New" keyword to create an object instance.
Does anyone know how to deal with this because I think the code is alright, and I get no lines under any part of the code...
I've got a datagridview which generates rows dynamically. Each cell in each of the columns contains the same type of data and runs through the same code so if one cell reports an error, then they all should. But For some reason the exact same cell (5th row down, 5th column across) gives the following error if I click on it.
Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function.
The column of the cell in question is editable and contains a dropdowntool while it is in edit mode.
I am trying to convert a DLL function call which has the Callback function routine called within the DLL function call.The DLL function call signature is like this:
My name is malky, a programming student currently learning visual basic 2010. I mostly know basic level of programmming (such as playing around with textboxes and such) and for my next project, I need to be able to call an executable file (the On Screen Keyboard to be exact) as my program first loads.
This might be a dumb question, but is it possible to call the beginning of a class from a different part of the same class?Here's the scenario... I have a class which has several subs in it. One of the last subs features a conditional statement. If that conditional statement is true, then I want the class code to be executed again, from the very beginning of that class.
I am still learning about Get / Post statements in VB, and wondering if you have to call the Get commands to images, and what not, or just the main Post / Get statement and the rest will auto-load?
It's been one of those days at a programmer. Nothing going right. I am not that experienced with Visual Basic 2010 Express, but I have a random problem that appeared out of no where.This is the error I get:
HTML Imports System.Text.RegularExpressions Imports System.Net
I am trying to call the below from another procedure in another class. The problem is that I am not passing the right parameters on (apparently). What value (and how) do I need to pass on as e?
I am trying to create a project in VB 2010 like I have in VB6. In VB6 I have a parent form which opens a child form. The child form displays calls (customers) on a spread sheet control that are on hold. The user selects the call in the child form, it calls a sub in the parent form passing a record number to identify the customer. The parent form then "pulls" up the call and and connects the user to the caller with all of the customers information.So, I haven't done this in VB NET and I have searched to see if this would be done the same way in .NET as it was in VB6, but I haven't found much decisive information. Is a parent/child form the way to do this?
When I start to save only one record from collection, no error was found, but when I start to save more than 2 records in database table then it can save only the first record and it can not continue to save the second record.The exception was that:
InvalidOperationException was caught ExecuteScalar requires the command to have a transaction when the connection assigned to the command is in a pending local transaction. The Transaction property of the command has not been initialized.
All of a sudden, when I built my project, it wouldn't read any changes, then all of a sudden, this error started popping up!The description of the error is:An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object.and it pops up when the following code is executed:
frmMain.Show()
on the line prior to it I have the code
frmStats.Show()
and that pops up no problem.These errors happened suddenly, and all I was changing in the code (which was in frmMain) were just a few changes to labels (activated by an event).
I get the following expeption when trying to switch from one form to another (click event):
InvalidOperationException was unhandled
An error occurred creating the form. See Exception.InnerException for details. The error is: Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "WindowsApplication1.CarDimensions.resources" was correctly embedded or linked into assembly "Driver Seat Configuration" at compile time, or that all the satellite assemblies required are loadable and fully signed.
How can i embed one form correctly into the another?
I am getting this error trying to open a project made in vs 2008 in vs 2010 A first chance exception of type 'System.InvalidOperationException' occurred in blah.exe The entire error looks like this
An error occurred creating the form. See Exception.InnerException for details. The error is: Could not load file or assembly 'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
I have a button on a form that is supposed to run an executable (compiled Intel Fortran v11) on the click event. Here is the code:
Private Sub RunButton_Click() Handles RunButton.Click Try System.Diagnostics.Process.Start("C: estDir estCode.exe")
[Code]....
I'm certain the path is correct and I have verified that running the testCode.exe from the cmd window works as it should (testCode.out file is updated). When I try to run the process via the RunButton it appears to work...no errors are reported or caught. However, the expected output file is not updated indicating testCode.exe did not execute. All of the online support I have researched indicates this should work.
I have created a Windows Service that I am trying to use to call an Emergency Alert program that checks a database to see if there is an alert to display. This is the Timer in the Windows Service that I call the Emergency Alert program from.
I'm using Microsoft Visual Studio 2010 Express: the C++ and VB versions.
There is some VB code that forms the body of a program, and all the GUI.There is also some C++ code that does some fast processing (lots of loops).
I am trying to call the C++ code, compiled as a dll, using:
Private Declare Sub CalcGraph Lib "Model.dll" ()
And at the moment keep getting the error: Unhandled exception has occurred in your application. Unable to find an entry point named 'CalcGraph' in DLL 'Model.dll'I'm fairly new to programming, so please be patient with me That said, I'm prepared to do the leg-work, and have already spent quite a while reading around on this and other sites. Nothing seems to match quite well enough to help me understand what's going wrong.
this is the error I started getting only when I added a splashscreen to my application. Please note that I haven't added any code there - on the contrary - I removed everything from the Splash class. The issue seems not to occur when debugging - I got it from my Virtual machine - what makes the problem a bit more complicated as I have no idea which line may cause it. The problem shows up between splash_screen_dispose and main_show (when I click continue all is ok).
The details of my err. message:See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text ************** System.InvalidOperationException: Collection was modified; enumeration operation may not execute. at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous) at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args)
i am in project of medical billing.i am on LogIn form in vb.but i have Erro - "InvalidOperationException was unhandle " and while i was run program it didn't say which line i had error.
here is my code.
Imports System.Data.OleDb Public Class login Inherits System.Windows.Forms.Form
I am in another Great problem, When I am running on my own machine then there is no problem creating but when I am running my project another machine then the project generating problem which caused not to open any form on running mode/compile mode. what problem is creating I attached with note file?
When I try to run my VB.net 2010 project I get the error.
"System.InvalidOperationException occured in PCDoctor.exe
Additional Inormation: An error occured creating the form. See Exception.InnerException for details. The error is: Conversion from string "" to type Double is not valid.I even tried placing break points in the startup form but this error happens before any of the startup form code is excecuted. The project was working fine before I added code to a form. I even removed this new code and tried to run the project. but still doesn't work.
I know its generally a big No-No to modify a collection that you are iterating through but unfortunately i didn't design the code that i'm trying to modify. All over the place the following is done:
for each log in Logs logs.Delete(log.LogId) Next
Delete pretty much just deletes the log from the database and removes it from the collection. Previously the Logs object was using a Non-Generic collection. I changed it to use a Collection(Of Log) so i can LINQify the object. Now every time i call next/.MoveNext is called after the first delete the following error happens:
InvalidOperationException:"Collection was modified; enumeration operation may not execute."
I understand why i'm getting the error but i don't understand why it never happened with the Non-Generic version. Is there anyway to get around this error? There really is no way i can take the time to change every place where the delete logs like this (codebase is large). Id like to just remove the code in the Delete function where it removes it from the current collection because i'm assuming no code does anything with the collection after its done but you know what happens when you assume.
I have a loop that will determine if a certain value is within the specification limits that I assign. The problem is, when the loop starts, I get the following exception:system.InvalidOperationException was unhandled Message=Cell provided already belongs to a grid. This operation is not valid.
I'm not sure exactly why I am getting this exception...OF COURSE the cell is already part of a grid! I just want to color it! Anyway, here is the code I am using:
Private Sub ColorAllCells() For row As Integer = 0 to dgvCurSetLanes.Rows.Count - 1
[code]....
The exception occurs as soon as I call ColorAllCells
I defined a picture column as Image type. Created the Datasource and placed an Image control on a form. When I input the picture of a client in the input form every thing works fine but when I Open a second form (the search form) and try to search for a client with picture I get the following message:Inconvertible type mismatch between SourceColumn 'Picture' of Byte[] and the DataColumn 'Picture' of String
I have designed a application in VB.net using the MS Office spreadsheet component.When launching the app on the client PC it gives a 'Windows has encountered a problem and needs to close' error, when clicked on Debug the error says 'An Unhandled exception occured ('System.InvalidOperationException') in 'ApplicationName.exe'.The client PC runs WinXP SP3 with .NET framework 3.5 with SP1 and Office Web Components, also has Office 2007 installed.When I remove the spreadsheet componenet from the app and redeploy the app to the client it works fine!
