The Type Initializer For 'System.Data.SqlClient.SqlConnection' Threw An Exception
May 4, 2007
Is there something wrong with my connection string that I would get this exception thrown back at me from my code? I have the string saved in the code and when I try to create an SqlConnection I get the exception above thrown and below is my connection string which is actually the address to my DB file.
Connection = "Data Source=.SQLEXPRESS;AttachDbFilename= C:Documents and SettingsTTTMy DocumentsBASEO.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
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Apr 27, 2011
I am having trouble deploying a dll to a Windows 7 machine. The app works fine on my Vista machine.
The dll is RAPI2.DLL The target machine encounters an exception when the object is instanciated:
System.TypeInitializationException: The type initializer for 'System.Devices.RemoteDeviceManager' threw an exception. ---> System.Runtime.InteropServices.COMException (0x80040154): Retrieving the COM class factory for component with CLSID {35440327-1517-4B72-865E-3FFE8E97002F}
[Code]...
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Dec 22, 2009
I'm using express 2008 build the windows app. and in the app, it calls a webservice which was built by VS2003.It works fine on most PCs. however, there is one PC, it always shows this error:
System.TypeInitializationException: The type initializer for 'System.ServiceModel.ClientBase' 1' threw an exception
....
System.configuration.ConfigurationErrorException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException:
Unrecognized configuration section system.serviceModel
.....
however, the configuration file was generated by express 2008, and it seems there is no error.
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Feb 9, 2011
an error throws up on the line:
con.open()
it says "The type initializer for 'System.Transactions.Diagnostics.DiagnosticTrace' threw an exception."
Private Sub BtnLoad_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnLoad.Click
Dim Con As New OleDb.OleDbConnection
Dim DbProvider As String
[code]....
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Aug 15, 2011
We have just converted a large VB6 desktop app to VB.NET 2008. First via the VB 2005 (open project), then days of fixing errors, etc. Then opened the VB 2005 in VB 2008 so now it is a 2008 solution.The more we try to test the worse it gets. It did start and crash with typical errors but now it does not even get off the ground.[code]The more we try to fix the earlier it crashes. The 1st form load does not even start (break point not stopped on but it did before and failed on AppFrameWorkOn = True where AppFramWorkOn is just a boolean in another module.Except same code works in other programs.We have written several dozen other VB.Net 2005 programs but this one just doesn't make sense.There is also no Configuration Manager in the Build menu.
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Sep 20, 2011
We have just converted a large VB6 desktop app to VB.NET 2008. First via the VB 2005 (opened the project), then days of fixing errors, etc. Then opened the VB 2005 in VB 2008 so now it is a 2008 solution. There are about 30 forms with code behind and about 40 other modules.
Message InvalidOperationException was unhandled.
... The type initializer for .... threw an error.
on
[code].....
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Jul 19, 2010
The Type Initializer for <Module> threw an exception?What does this error mean.
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Jun 4, 2009
We have a VB .Net windows application developed with VS 2005, framework 2.0.
The executable when run on a different machine throws the above error. It cannot be caught with the IDE due none of the developers experiencing it.
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Mar 16, 2011
I have project which is implemented in VB.Net using VS 2008. I install build on Win 7 64 bit machine an see a splash screen after which it thorws exception saying "The type initializer '<class name>'for threw an exception". The class is NotInheritable and the method which I'm trying to access is shared. The same project works fine on win 7 32 bit machine. The build is also compiled using x86.
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Mar 27, 2009
I am creating a medium/largish program in VB Express 2008. To keep it more simple i have created each section of the program in individual projects/solutions and then when they all work well, copy the code from each project into one Big project. Everything was fine, but when i put the global variables all together in 1 module, i get the following error:'The type initializer for 'WindowsApplication1.Module1' threw an exception.' This appears everytime a line of code is ran that reads/writes to a var in the module.
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Apr 24, 2011
I just make one login SQL form and one module global variables. This is the code in module
Imports System
Imports System.IO
Imports System.Text
Imports System.Data
Imports System.Data.SqlClient
Module globalVAR
[Code] .....
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Nov 13, 2010
Ok, so I'm making a small system that deals with route making. Effectively all I'm trying to do is open the connection to my SQL database at the moment and this error turns up.
The data it says is the problem is:
{System.Collections.ListDictionaryInternal}
[code]......
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Jun 22, 2012
I've been writing an application, and all has been going smoothly; I tried to debug my application, after many previous debugging sessions and from nowhere, I received an error. I've not changed the module in which the error is coming from, but I can't narrow the error down either.
Here's the error: The type initializer for 'HG520b.MHProgramming' threw an exception.
This occurs any time I attempt to debug my application and linked to a function, property or enum which resides in my module.I don't know where to start looking for this error seen as it's all random...
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Jan 22, 2009
I am just trying to get the system to open a database and I get this error:
A first chance exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll
here's the entire code of the main form
=======================================
Imports System
Imports System.Data
Imports System.Data.SqlClient
[code]....
the error is generated at the open method note* this same code works fine in another computer, the main difference is that this one has a 64 bit OS.
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Feb 9, 2010
I just created this program 2 weeks ago, and stop doing for two weeks... before, it perfectly run and has no errors on all of my instance variable that i declared, though in is not finish...
[Code]...
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Jan 26, 2009
i 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?
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Jan 27, 2012
I encountered this exception when I trying to load a certain page. It doesn't show me which line of code has problem, which makes me kind of dizzy now..What is a type initializer? What is it used for? and how can I troubleshoot this problem?
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Mar 10, 2009
I have imports namespace System.Data.SqlClient.I just create object of SqlConnection,But error is there-
'SqlConnection' is ambiguous in the namespace 'System.Data.SqlClient'.
[Code]...
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Jan 23, 2011
I am creating class libraries in my project so that I can update code without having to update the whole app.I created a class library project and added some code to it. I also added a reference to System.Data.SqlClient and also imported it into the class file.I am getting an error and I have never seen it before. Been looking online and not able to find an answer yet.
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Aug 9, 2009
My colleague gave me a DLL that manage all database business. I wanted to invoke a function that uses Stored Procedure and return the search result. In the function receive a parameter type in ystem.Data.IDataParameter[]. Below is my codes.
[Code]...
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Nov 18, 2011
Exception Message happens when my splash screen shows: The type initializer for 'App_Name.GlobalThings' threw an exception GlobalThings is not a class, but just a module name (Module Globalthings). I get the error above at run time (.exe) but not during debug.Because I am brand new not only to visual studio and to visual basic, but also to programming, I have no how to figure out what is actually throwing this error since it occurs only at run time.
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Oct 5, 2011
I've got a visual basic 2008 application that is giving me a type initializer exception when I run it in debug. The application is running on windows server 2008.There are some .dll files that are added as references and I have some global declarations files.When I run this on my PC (XP) the application runs. When I run it in the server environment, I get the exception.The details are: -[code].....Do I need to install something additonally to the server to get this running?
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Sep 2, 2011
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]....
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Nov 20, 2009
The application works fine on Vista but throws this error on Windows 7:
- The type initializer threw an exception.
This is the code that causes it:
Public UserName As String = String.Empty
UserName = Environment.UserName
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Sep 4, 2011
i need to clear this error
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
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May 5, 2011
I am using VS 2008, Office 2007, and Win7 Home Premium on my system.I have a simple application which should be a breeze to build. All I am attempting to do is pull data from an Access database with four small tables into a data grid on a windows project. Should be simple, set up the data connection, choose a datagrid from the table in the data source view, drag it onto the page and done, right?I can't get it to work. It will all work fine until I attempt to run or debug the project. The data will not show up. The data grid does, but I get this error: A first chance exception of type 'System.InvalidOperationException' occurred in System.Data.dll
As I said, the project seems to build fine, but it will not pull the data. After the initial build I get the message that Windows will show this page in Compatibility View. Is it something with Win7 Home Premium, or a setting somewhere?
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Jan 27, 2010
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.
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Apr 27, 2009
I have a VB.net 2005 application that will use both Access and SQL server databases. I have DSN namesfor both access and sql server database. I used OleDb.OleDbConnection to open the Access database and it works fine. I am trying to make it work with sql server database. Do I have to have to have separate source codes using Sqlclient.SqlConnection and its related name spaces? Can I use odbc.OdbcConnection name space
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Sep 27, 2008
I am trying to perform a simple bound connection between an Access database and a text box on a form. This is actually Chapter 18 of the "Microsoft Visual Basic 2008" book.I get the same error message when trying to create my own project "MY ADO Form" or the "ADO Form" project supplied from the DVD provided with the book. I am running the 90 Day Trial Version of Visual Studio 2008 with SP1 and Net 3.5 SP1.
My operating system is the 64 bit Version of Vista with all updates.The error when I try to run the application in the debug mode is:"A first chance exception of type 'System.InvalidOperationException' occurred in System.Data.dll"and as a result no data shows up in the text box from the database and the data selection bar is grayed out in the form. The underlying database "Students Data Set" appears to be fine as I have seen the correct data for the fields "Instructor" and "PhoneNumber" prior to running the program and when connecting with the database.
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Aug 7, 2011
When testing the followng code from Mastering VB2010, I get an Unable to cast object of type 'System.String' to type 'System.IFormatProvider' exception.In the Button1_Click event code Dim strmOut As New System.IO.StringWriter(SaveFileDialog1.FileName)the 'SaveFileDialog1. FileName' is underlined with a green squiggle and displays the following tool tip:Runtime errors might occur when converting 'String' to'System. Iformat Provider'.This is apparrently the problem but what does it mean and how do I fix it to get the code to work? 'Code being tested that runs the exception:Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click.[code]
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