VB.NET app compiled in Vista does not work on XP

[pmw]

Hi

I've got a problem with my current application. I currently use
Windows Vista with Visual Studio Express 2008. If I compile the
application on Vista, it works fine on Vista, but it doesn't work on
XP. If I compile it on XP (with the same source code [copied from
vista]), it runs without any problems.

The thing is: I only have a virtual machine to test my software on XP,
but I can't develop on it.
The error shows up, when I try to declare a public OleDb object. Here
the source:

Public DatabaseConnect ion As New OleDb.OleDbConn ection

This error only happens, when I try to fill up the ConnectionStrin g of
this OleDb Object.
The error message itself is not really helpful, so I won't post it
right now.
My Question is: Where is the problem, is there someone which had
similar problem with Vista and XP apps?
Thank you for your help.

--
pmw

[kimiraikkonen]

On Sep 22, 4:00*pm, pmw <[e-mail] wrote:

Hi

I've got a problem with my current application. I currently use
Windows Vista with Visual Studio Express 2008. If I compile the
application on Vista, it works fine on Vista, but it doesn't work on
XP. If I compile it on XP (with the same source code [copied from
vista]), it runs without any problems.

The thing is: I only have a virtual machine to test my software on XP,
but I can't develop on it.

The error shows up, when I try to declare a public OleDb object. Here
the source:

Public DatabaseConnect ion As New OleDb.OleDbConn ection

This error only happens, when I try to fill up the ConnectionStrin g of
this OleDb Object.

The error message itself is not really helpful, so I won't post it
right now.

My Question is: Where is the problem, is there someone which had
similar problem with Vista and XP apps?

Thank you for your help.

--
pmw

What's the error?

[PmW]

On 22 Sep., 16:04, kimiraikkonen <kimiraikkone.. [e-mail] e:

On Sep 22, 4:00*pm, pmw <[e-mail] wrote:

Hi

I've got a problem with my current application. I currently use
Windows Vista with Visual Studio Express 2008. If I compile the
application on Vista, it works fine on Vista, but it doesn't work on
XP. If I compile it on XP (with the same source code [copied from
vista]), it runs without any problems.

The thing is: I only have a virtual machine to test my software on XP,
but I can't develop on it.

The error shows up, when I try to declare a public OleDb object. Here
the source:

Public DatabaseConnect ion As New OleDb.OleDbConn ection

This error only happens, when I try to fill up the ConnectionStrin g of
this OleDb Object.

The error message itself is not really helpful, so I won't post it
right now.

My Question is: Where is the problem, is there someone which had
similar problem with Vista and XP apps?

Thank you for your help.

--
pmw

What's the error?- Zitierten Text ausblenden -

- Zitierten Text anzeigen -

Error Number 5 - The type initializer for
Project.ModuleG lobalVariables threw an exception

and the ex.InnerExcepti on.Message says: "Exception has been thrown by
the target of an invocation"

[kimiraikkonen]

On Sep 22, 5:16*pm, PmW <[e-mail] wrote:

On 22 Sep., 16:04, kimiraikkonen <kimiraikkone.. [e-mail] e:

On Sep 22, 4:00*pm, pmw <[e-mail] wrote:

Hi

I've got a problem with my current application. I currently use
Windows Vista with Visual Studio Express 2008. If I compile the
application on Vista, it works fine on Vista, but it doesn't work on
XP. If I compile it on XP (with the same source code [copied from
vista]), it runs without any problems.

The thing is: I only have a virtual machine to test my software on XP,
but I can't develop on it.

The error shows up, when I try to declare a public OleDb object. Here
the source:

Public DatabaseConnect ion As New OleDb.OleDbConn ection

This error only happens, when I try to fill up the ConnectionStrin g of
this OleDb Object.

The error message itself is not really helpful, so I won't post it
right now.

My Question is: Where is the problem, is there someone which had
similar problem with Vista and XP apps?

Thank you for your help.

--
pmw

What's the error?- Zitierten Text ausblenden -

- Zitierten Text anzeigen -

Error Number 5 - The type initializer for
Project.ModuleG lobalVariables threw an exception

and the ex.InnerExcepti on.Message says: "Exception has been thrown by
the target of an invocation"- Hide quoted text -

- Show quoted text -

Sorry, without seeing full code (if it's not too long), i can't make
out the reason beyond guessing the following:

1)Make sure you are using proper connection string syntax. Look at
http://www.connectionstrings.com for more info.

2)Try to put your code inside a Try-Catch block and catch the actual
error if it provides additional clue.
Like:

Try
'...All the code including connection string
' and stuff related to OleDb object
Catch ex As Exception
Msgbox(ex.Messa ge.ToString)
End Try

3)Try to initialize your disposable OleDb class within Using-End Using
to ensure there's no pending open connections.

All from me.

Hope this helps,

Onur Güzel

[Larry__Weiss]

Lets see if I got this right

compile on XP, run on XP is OK
compile on XP, run on Vista is OK
compile on Vista, run on Vista is OK
but, compile on Vista, run on XP is NOT OK

- Larry
pmw wrote:

Hi

I've got a problem with my current application. I currently use
Windows Vista with Visual Studio Express 2008. If I compile the
application on Vista, it works fine on Vista, but it doesn't work on
XP. If I compile it on XP (with the same source code [copied from
vista]), it runs without any problems.

The thing is: I only have a virtual machine to test my software on XP,
but I can't develop on it.

The error shows up, when I try to declare a public OleDb object. Here
the source:

Public DatabaseConnect ion As New OleDb.OleDbConn ection

This error only happens, when I try to fill up the ConnectionStrin g of
this OleDb Object.

The error message itself is not really helpful, so I won't post it
right now.

My Question is: Where is the problem, is there someone which had
similar problem with Vista and XP apps?

Thank you for your help.

--
pmw

[PmW]

On 22 Sep., 17:45, kimiraikkonen <kimiraikkone.. [e-mail] e:

>Sorry, without seeing full code (if it's not too long), i can't make
out the reason beyond guessing the following:

Sorry, I would love to give you the source code, but I can't. Not
because it's big, I just can't hand you over that code.

>1)Make sure you are using proper connection string syntax. Look at http://www.connectionstrings.com for more info.

That one has to be allright, because on Vista it works with the same
one. I also checked it by creating an *.udl file on the XP machine to
create the string.

>2)Try to put your code inside a Try-Catch block and catch the actual r
error if it provides additional clue. [...]

Already did that. There isn't really a good error message for that ...
makes it even harder to understand the problem.

>3)Try to initialize your disposable OleDb class within Using-End Using
to ensure there's no pending open connections.

Problem 1: I can't use "Using-End Using" with "OleDB.OleDbCon nection".
Problem 2: I'm using the object all over the application, so it has to
be a public one, declared in a module. (like I'm doing it right now).

Thank you anyway for your help! I really appreciate that.

[PmW]

On 22 Sep., 23:19, Larry__Weiss <l...@airmail.n etwrote:

compile on XP, run on XP is OK

True

compile on XP, run on Vista is OK

Not sure, didn't try that. But I expect that it is running on Vista.

compile on Vista, run on Vista is OK

True

but, compile on Vista, run on XP is NOT OK

True

--
PmW

[dgcarter1949]

On Sep 23, 7:01*am, PmW <[e-mail] wrote:

On 22 Sep., 17:45, kimiraikkonen <kimiraikkone.. [e-mail] e:>Sorry, without seeing full code (if it's not too long), i can't make

out the reason beyond guessing the following:

Sorry, I would love to give you the source code, but I can't. Not
because it's big, I just can't hand you over that code.

1)Make sure you are using proper connection string syntax. Look athttp://www.connections trings.comfor more info.

That one has to be allright, because on Vista it works with the same
one. I also checked it by creating an *.udl file on the XP machine to
create the string.

2)Try to put your code inside a Try-Catch block and catch the actual r
error if it provides additional clue. [...]

Already did that. There isn't really a good error message for that ...
makes it even harder to understand the problem.

3)Try to initialize your disposable OleDb class within Using-End Using
to ensure there's no pending open connections.

Problem 1: I can't use "Using-End Using" with "OleDB.OleDbCon nection".
Problem 2: I'm using the object all over the application, so it has to
be a public one, declared in a module. (like I'm doing it right now).

Thank you anyway for your help! I really appreciate that.

So you want help solving this problem but can't show us the code
that's causing it. Call me an old cynic, but that sounds like I've
got this homework please do it for me.

[PmW]

On 23 Sep., 10:05, "dgcarter1...@g ooglemail.com"
<dgcarter1...@g ooglemail.comwr ote:

On Sep 23, 7:01*am, PmW <[e-mail] wrote:

On 22 Sep., 17:45, kimiraikkonen <kimiraikkone.. [e-mail] e:>Sorry, without seeing full code (if it's not too long), i can't make

>out the reason beyond guessing the following:

Sorry, I would love to give you the source code, but I can't. Not
because it's big, I just can't hand you over that code.

>1)Make sure you are using proper connection string syntax. Look athttp://www.connections trings.comformo re info.

That one has to be allright, because on Vista it works with the same
one. I also checked it by creating an *.udl file on the XP machine to
create the string.

>2)Try to put your code inside a Try-Catch block and catch the actual r
>error if it provides additional clue. [...]

Already did that. There isn't really a good error message for that ...
makes it even harder to understand the problem.

>3)Try to initialize your disposable OleDb class within Using-End Using
>to ensure there's no pending open connections.

Problem 1: I can't use "Using-End Using" with "OleDB.OleDbCon nection".
Problem 2: I'm using the object all over the application, so it has to
be a public one, declared in a module. (like I'm doing it right now).

Thank you anyway for your help! I really appreciate that.

So you want help solving this problem but can't show us the code
that's causing it. *Call me an old cynic, but that sounds like I've
got this homework please do it for me.- Zitierten Text ausblenden -

- Zitierten Text anzeigen -

Err ... yeah sure ...

So you want to know why I can't show you the code? First it is a
commercial product, so I can't just show you some source codes without
permission. Second, I'm working in a workplace where I have to go
through 4 security doors. So now you can imagine, that I'm not just
working at a standard workplace. Two good reasons, why I can't show
you the sources.

[Larry__Weiss]

pmw wrote:

I've got a problem with my current application. I currently use
Windows Vista with Visual Studio Express 2008. If I compile the
application on Vista, it works fine on Vista, but it doesn't work on
XP. If I compile it on XP (with the same source code [copied from
vista]), it runs without any problems.

Is there any way you can compare the IL code generated from the Vista
and XP compiled code?

- Larry