.net - InvalidOperationException Was Unhandled By User Code
Oct 14, 2011I am trying to save changes made to a list(of xxx) in a function... Am I over looking something because it barfs on the UpdateModel(e) with saying:
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InvalidOperationException Was Unhandled By User Code?
Aug 23, 2010'm tryng to execute code from the DoWork event of a background worker but get the following error:InvalidOperationException was unhandled by user codeCross-threadoperation not valid: Control 'RTB_SndMsg' accessed from a thread other than the thread it was created on.How can i fix this error?
Imports System.IO
Imports System.IO.StreamReader
Imports System.IO.StreamWriter
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InvalidOperationException Was Unhandled
Oct 23, 2009All 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).
InvalidOperationException Was Unhandled ?
Mar 2, 2011I 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?
Error - InvalidOperationException Was Unhandled
Jul 21, 2010i 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
[code].....
System.InvalidOperationException Was Unhandled?
Sep 6, 2008Code:
System.InvalidOperationException was unhandled
Message="An error occurred creating the form. See Exception.InnerException for details. The
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VS 2010 InvalidOperationException Was Unhandled
Aug 13, 2011I'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
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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...
Error : System.InvalidOperationException Was Unhandled
Jul 17, 2010I am working on an application with a friend and I am getting an error.The error says:
System.InvalidOperationException was unhandled
Message=An error occurred creating the form. See Exception.InnerException for details. The error is: The process cannot access the file 'C:UsersAdministratorNotesWebSiteNotes.txt' because it is being used by another process.
Source=Website Notes
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Now I know why it is throwing this error but nothing I do will stop it from showing up.At the top of our form we have a module that we use to check if a file exists on the computer and if it doesn't then it will create the file.I have tried accessing that module from the form load event but with no luck as it still throws the error.
This is the source:
Imports System.IO
Imports System.Environment
Module CheckFiles
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Error System.InvalidOperationException Was Unhandled
May 10, 2010at my visual studio class we made a data base program! i was using VB 2008 on a win xp x86 machine i copy the project on a usb stick because i want at home to work on visual aspects! my pc have win 7 x64 and now my project doesnt work! it shows me an error i cant get to the second form from project!here is the error:
System.InvalidOperationException was unhandled
Message="The 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine."
Source="System.Data"
StackTrace:
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Forms :: Error : InvalidOperationException Was Unhandled
Dec 25, 2010I need to make Mastermind for school (vb.net).It must work as single-player (thats already finished), but we also must make it work multiplayer. We got the server with the task, and don't have to program its ourselves.I can't find why I get this error.
View 1 RepliesMysterious InvalidOperationException Was Unhandled Occurs
Sep 23, 2010I am working on a program that opens forms from within the startup form. It is doing nothing usual that I am aware of. It was working fine an hour ago but now when I try to open one particular form I get the InvalidOperationException and I have no idea why. I've rebuilt the project, restarted VS2008 and restarted the computer. The other forms open without any trouble.
View 1 RepliesVS 2008 System.InvalidOperationException Was Unhandled
Nov 28, 2009I got the error after I added forms from another project into a new project. Theres no error in my code so it doesn't show where the error occurred.. out and explain what this exception means?
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[2008] Error: InvalidOperationException Was Unhandled
Mar 5, 2009I 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."
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Upload File - System.InvalidOperationException Was Unhandled
Aug 30, 2010I wrote this code to upload a file but I get this error
System.InvalidOperationException was unhandled
Message="Het adres voor UploadFile moet een bestandsnaam bevatten."
The address for UploadFile needs to contain a filename.
IndexOutOfRangeException Was Unhandled By User Code?
Oct 8, 2009i have a string with data when i tried to retrive character by character in a for loop but the size of the string is just 256 but the actual size is more than that... as soon as it passes 256 it throws IndexOutOfRangeException while its printing well in msgbox. I have removed newline, tab using
details = details.Replace(vbCrLf,
"")
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InvalidOperaionalException Was Unhandled By User Code
Oct 15, 2011I have this problem.. I keep getting this error: Cross-thread operation not valid: Control 'ListView1' accessed from a thread other than the thread it was created on.
Here is my code:
Imports System.IO.Directory
Imports System.IO
Public Class Video_to_Mp3
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New Db - Enter A Record - End & Receive - Error: InvalidOperationException Was Unhandled
Dec 31, 2011Error: InvalidOperationException was unhandled "Update requires a valid UpdateCommand when passed DataRow collection with modified rows."
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Windows 7 Task Scheduler / System.InvalidOperationException Was Unhandled
Nov 19, 2009I'm upgrading from Windows XP 32-bit to Windows 7 64-bit, and I'm using VB in VS 2008. Under XP, I used the Task Scheduler to run a program at 3pm every weekday, and it ran fine. Now in W7, when the Task Scheduler runs the programs, it encounters an exception when it gets to the code MyForm.ShowDialog(). The error is:
System.InvalidOperationException was unhandled
Message="Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application."
Source="System.Windows.Forms"
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When I run the program from a shortcut with the same parameters as in the Task Scheduler (i.e. the shortcut runs the .exe file with some paramters after it), it runs fine, so I'm guessing there is some setting in the Windows 7 Task Scheduler I need to set, but I can't find it. I've tried checking "Run with highest privledges" (and unchecking it), but that didn't help. I have tried it with the "Hidden" box unchecked and checked and that didn't help. I've also tried it with "Configure for" set either way (Windows 7 or Vista). So how do I get rid of this error?
Error = NullReferenceException Was Unhandled By User Code?
May 11, 2011Error occuring at line: SqlDataSource3.UpdateParameters("TechID").DefaultValue() = CInt(technicianRow("TechID"))
Here is full VB code:
[code]....
System.MissingMemberException Was Unhandled By User Code
Apr 28, 2010I'm using this code:
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VS 2008 Webexception Was Unhandled By User Code?
Apr 9, 2009im running the following bit of code in a background worker and it is coming up with the following error
"The remote server returned an error: (503) Bad sequence of commands."the code is My.Computer.Network.DownloadFile(strFTP & aryfiles(i), My.Settings.strLocalTemp & aryfiles(i), strPUserName, strPPassword, False, 100, True) It runs fine the first time through but 5 mins later when it runs again it always throws this error.
[VB 2010] InvalidCastException Was Unhandled By User Code
Dec 10, 2011I use this code to populate combobox1&2:
'Main form on load events
Private Sub frm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
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Error : ArgumentOutOfRangeException Was Unhandled By User Code Value Of '-1' Is Not Valid For 'Value'
Mar 27, 2011I Was Coding A Tabbed Web Browser With A Progress Bar In Visual Basic 2010 Express Edition. I Started De-Bugging The Browser When It Pointed To This Sub: Private Sub Loading(ByVal sender As Object, ByVal e As Windows.Forms.WebBrowserProgressChangedEventArgs)
ToolStripProgressBar1.Maximum = e.MaximumProgress
ToolStripProgressBar1.Value = e.CurrentProgress
End Sub
And Showed This Error Message: ArgumentOutOfRangeException Was Unhandled By User Code Value of '-1' Is Not Valid For 'Value'. 'Value' Should Be Between 'Minimum' And 'Maximim'
Null Reference Exception Was Unhandled By User Code?
Feb 19, 2010i develop the following code in vs2005, now i just using this module in my new project @ vs 2008..But this error was araised. I cant able to fix this problem...
Private Sub DataAccess()
Dim errHandle As New ErrorHandler
Dim lobjCommon As New eCopsCommonFunctions
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Inserting Word Watermark - System.MissingMemberException Was Unhandled By User Code
Mar 8, 2012With oWordDoc
.Activate()
.Sections(1).Range.Select()
.ActiveWindow.ActivePane.View.SeekView = Word.WdSeekView.wdSeekCurrentPageHeader
.Selection.HeaderFooter.Shapes.AddTextEffect(
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It throws at this line...
.Selection.HeaderFooter.Shapes.AddTextEffect(Office.MsoPresetTextEffect.msoTextEffect1, "UNCONTROLLED", "Calibri", 1, Office.MsoTriState.msoFalse, Office.MsoTriState.msoFalse, 0, 0).Select()
This is the error...
System.MissingMemberException was unhandled by user code
Message=Public member 'Selection' on type 'DocumentClass' not found.
Source=Microsoft.VisualBasic
System.Data.OleDb.OleDbException Was Unhandled By User Code ErrorCode=-2147217900 Message=Syntax Error In INSERT INTO Statement
Jul 8, 2011I cannot seem to figure out why VB keep throwing me this exception but here is the code
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System.InvalidOperationException Was Unhandled The Error Is: An Error Occurred Creating The Form. See Exception.InnerException For Details
May 8, 2012ok so i viewed some other question that are ruffly the same and i am still confused, here is the stacktrace
at Game3.My.MyProject.MyForms.Create__Instance__[T](T Instance) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 190
at Game3.My.MyProject.MyForms.get_Character_Creator()
at Game3.My.MyApplication.OnCreateMainForm() in C:UsersMasonDocumentsVisual Studio 2010ProjectsGame3Game3My ProjectApplication.Designer.vb:line 35
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also, where is game3.my.myproject, obviously its a line of code but what is it in.
.net P2p Chat "InvalidOperationException Was Unhandled." Error
Apr 7, 2011I'm a beginner in VB.net, I'm trying to develop P2P based Chat application from this thread. The chat application has server side and client side. Serverside items: Form1.vb, BB_Server, RTS_Listener, and RTS_SocketClient. And for Clientside items: Form1.vb, BB_Client, RTS_SocketClient. Below is the code of simple form I tried to build. I'm still trying to establish a connection for the server, so the form only has txtDisplay, txtSend, and btnSend controls.
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"ExternalException Was Unhandled By User Code"
Jul 21, 2011I'm new to .Net, OOP and this forum but love it!
View 4 RepliesDataSet.Designer.vb Curious Code Causing System.InvalidOperationException?
Mar 3, 2012I'm using a DataSet to interact with an accdb file in an application. While debugging, the app occasionally closes, without warning and returns the stack below. The code causing the exception is in the DataSet.Designer.vb file (automatically generated). What's curious is the line that reads:
If (previousConnectionState = Global.System.Data.ConnectionState.Closed) Thencommand.Connection.Close()End If Why would the code try to close an already closed connection?I just change the "=" to "<>"? Will it stick? (since it's auto-generated, I'm sure it will revert if I modify the dataset, right?)
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