I'm still coding in vb.net 2008, but was having that error pop up when i entered the following code:
Dim con As SqlCeConnection
con = New SqlCeConnection("Data Source=|DataDirectory|ConUser.sdf")
Dim cmd As SqlCeCommand = con.CreateCommand()
[code]....
Do While rdr2.Read()
Dim var1 As String = rdr2.Item("Week").ToString
Dim var2 As String = rdr2.Item("L1").ToString
Dim var3 As String = rdr2.Item("L2").ToString
It generates the following error: A first chance exception of type 'System.Data.SqlServerCe.SqlCeException' occurred in System.Data.SqlServerCe.dll
Interestingly, if I use a numeric value for the variable it for LSArraytemp, it writes to the database no problem at all.
There was a syntax error while converting from one data type to another. [ Expression = -1 ].
This part of the code where the issue starts is here: Do While JVReader.Read()
Here is the
CODE:
I made a simple sql ce database with one table with the data explorer. Then I added the reference System.Data.SqlServerCe.dll to my project and I added this code:
Imports System.Data.Common
Imports System.Data.SqlServerCe
Public Class Form1
[Code]...
What do I wrong? The sql server ce (3.5 sp1) is fully installed with the vb express edition.
I am working with Wizard generated dataset. I added this code to a button for update:
transDetailTA.Update(abars.TransactionDetails)
I'm making the changes to a datagridview bound to one of the tables in my dataset and when I make changes and click the update button i receive the following message even though I'm the only one using the DB (I'm working on a laptop):
System.Data.DBConcurrencyException was unhandled
Message="Concurrency violation: the UpdateCommand affected 0 of the expected 1 records."
RowCount=1
[code]....
I cannot seem to figure out why VB keep throwing me this exception but here is the code
[Code]...
get out from the below loop
Shared Function GetIPAddress() As String
Dim sam As System.Net.IPAddress
Dim sam1 As String
[code]....
When I run my project I get "An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll"
Public Class frmViewReport
Dim objForm As New frmViewReport
Private Sub frmViewReport_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
objForm.ViewReport("C:a2.rtp", , "@parameter1=test�mter2=10")
[code]....
I keep getting an eroor this error says: An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in system.windows.forms.dll Additional information: Specified argument was out of the range of valid values.
Option Strict On
Public Class frmWeeklyReport
Inherits System.Windows.Forms.Form
[code].....
ok 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
[Code]...
also, where is game3.my.myproject, obviously its a line of code but what is it in.
I have created a vb.net console application when i am running the source code it will work fine.But when i am running the Executable file it is throwing an exeption like "System.TypeInitializationException was unhandled".In my application i have used MCL PrinterMonitorComponent
my code is:
Imports PrinterQueueWatch
Imports SpoolMonitoringIPC
Imports System.Data.SqlClient
[code]....
I 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
[code]....
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
[code]....
at 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:
[code].....
An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll it also says make sure you do not have infinate loop or infinate recursion il give all code in order that they are executed in Check the chechbox and it disables all irelevent stuff and populates the combobox
Private Sub CheckBox_Spray_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox_Spray.CheckedChanged
If Me.CheckBox_Spray.Checked = True Then
[code]....
In this screen I want to let the user decide which elements are on shown on a label. When I hit the update button (BDUpdate_Click; see below), it first checks whether the Barcode sample text is empty. Afterwards I want to invole the refresh of the label preview. The strange thing is that the first time it works fine, but when I alter the sample text and hit the button again, I get the Error "System.ArgumentException was unhandled. Parameter is not valid." The error points to the DrawSting function in the LabelPreview_Paint Sub
Dim BarcodeLabelUpdate As Boolean
Private Sub BDUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BDUpdate.Click
If BDBarcodeSample.Text = "" Then
MsgBox("Please enter a sample text", MsgBoxStyle.Information Or MsgBoxStyle.OkOnly, ProgramTitle)
[code]....
I am working on a multi-form code. For some reason, this randomly began happening just about the time I finished my code. The intial form loads just fine, but when I go to click on any of the selected buttons, the code crashes. and I get an unhandled exception of type 'System.stackoverflowexception' occured. Does anyone have any ideas? I have checked for any subs calling subs that call subs and I don't have anything of that nature. It is breaking at the point that is bolded and underlined.
Public Class Add_Description
Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
[code]....
I always get this error during the Paint event: System.AccessViolationException was unhandled. The weird thing is that it doesn't happen the first time it goes through.
Here's the code.
Friend CustomFont As Font = GetCustomFont()
Private Function GetCustomFont() As Drawing.Font
Try
Dim PFC As Drawing.Text.PrivateFontCollection
[CODE]...
Symbols is just a 2 dimensional array of characters.
I'm getting the following exception when I try to run up my Winforms app and haven't been able to find a solution to it:
System.ArgumentNullException was unhandled
Message=Value cannot be null.
Parameter name: activationContext
[code]....
I've added a handler for the "unhandled error" event in the applicationevents class but it never reaches that stage and there is no source code running that I can break into and diagnose.
The application was fine until I added a user control (nothing fancy, just a standard windows user control) and then dragged it onto a form in the app (user control and form were in the same application). The application builds and compiles without any errors or warnings but when I attempt to run it up I get the above error straight away.
Does anyone have any idea what it could be or even how I can go about investigating it? I'm a bit stumped on this one as I'm not sure how to investigate it. I removed the user control from the form and then I removed the user control from the application entirely but the error hasn't gone away. In all honesty the addition of the user control might be a red herring but the problem manifested straight after adding it.
I am working on a multi-form code. For some reason, this randomly began happening just about the time I finished my code. The intial form loads just fine, but when I go to click on any of the selected buttons, the code crashes. and I get an unhandled exception of type 'System.stackoverflowexception' occured. I have checked for any subs calling subs that call subs and I don't have anything of that nature. It is breaking at the point that is bolded and underlined.
[Code]...
Dll libray with VC++
.h file
__declspec (dllexport) unsigned long QueryUser(const wchar_t* AccountName,
wchar_t FullUserName[100],
[code]....
an error : An unhandled exception of type 'System.ExecutionEngineException' occurred in TestLib.exe
I have problem in calling DLL file in VB.Net that I had Created it in C++... it give me this error message: "An unhandled exception of type 'System.EntryPointNotFoundException' occurred in test_dll_1.exe. Additional information: Unable to find an entry point named 'add_1' in DLL 't1.dll'."
This is my code in C++ (header file)
[CODE]............
The one in the main
#include "header_1.h"
double add_1(double a, double b){
return (a+b);
[CODE].....................
This code only for creating dll and I did created it correctly and i had tested it in c++ and it did works.... but in the Vb.net I had no luck with it...This is the code that I wrote it in the VB.net
Imports System.Runtime.InteropServices
Public Class Form1
<DllImport("t1.dll")> Public Shared Function add_1(ByVal a1 As Double, ByVal a2 As Double) As Double
End Function
[CODE].....................
And, I did put the .dll file in the bin folder, but also with no luck...
program supost to control (projector - done..., webcam - idk how do i read FPS of the camera ..., arduino - will take me 5 min...)
here is the code of form1:
[code]...
it chrashes here is the error : An unhandled exception of type 'System.StackOverflowException' occurred in Unknown Module.
An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in STUB_CREATOR.exe Additional information: Exception from HRESULT: 0x800A0036 (CTL_E_BADFILEMODE)
This is the line that creates the error
Dim f As New Scripting.FileSystemObject
starter = f.OpenTextFile(stub_path.Text + "" + cpp_file, Scripting.IOMode.ForWriting)
I have just previously opened the file for writing. but however i have closed the textstream with which i was writing into the file.
I've spent a substantial amount of time trying to figure this out, but I keep getting the same error
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A first chance exception of type 'System.NullReferenceException' occurred in project1.exe
This happens when I try to use the DataReader.my code is
Public Function Identification() As List(Of Integer)
Dim returnIndex As New List(Of Integer)
Dim dbCount As String = "SELECT Bookingid FROM bookdetail WHERE Date =" & getCurrentTimeString() & " 12:00:00 a.m."
Dim count As Integer = 0
[code]....
During Runtime when it tries to open the connection it throws up this error.System.Data.OleDb.OleDbException was unhandled'
View 9 Repliesi am trying to connect to an MS Access database and I am getting an erro message on the following line of
searchtable_command = New SqlClient.SqlCommand(searchtable_string, testsearch_connection)
Error:'System.Data.Odbc.OdbcConnection' cannot be converted to 'System.Data.SqlClient.SqlConnection'.
Here my connection string:
Dim testsearch_connection As New Odbc.OdbcConnection("Provider=MSDASQL;Driver={Microsoft Access Driver (*.mdb)};Dbq=C:CesarAccessdatabase.mdb;Uid=admin;Pwd=;")
What am I missing?
I'm I created a SQL Compact database for a program I'm working on and built the tables and forms. I'm trying to add the values entered into the textbox in to my SQL DB, but I keep getting the following Error Message.
"SqlException was unhandled:
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)" Below is my code....Its erroing at the cnx.open()
Private Sub btnSend_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSend.Click
Dim cnx = New SqlConnection(My.Settings.TestDBConnectionString)
Dim sQuery = "INSERT INTO tblMain (Date) VALUES (@Date)"[code]......
I am having some trouble getting some code to work. Here it is:
[Code]...
An unhandled exception of type 'System.IO.IOException' occurred in mscorlib.dll Additional information: The process cannot access the file "c:Fax524b2cfa00.tif" because it is being used by another process.
[Code]....
i am making an application that grabs an image from a folder, sets it to a picture box, then has the option to delete the folder... when i click the delete folder button i get the error:
[Code]...