COM in .NET

[Michal]

Hi.

I've got a big problem :(... I wrote COM dll in c# for an application. This
application works fine with this dll until i'll close that application. Then
the error occurs:

..NET-BroadcastEventWindow.1.5000.0

The instruction at "0x04489f05" referenced memory at "0x00000030". The
memory could not be "read". Click on OK to terminate the program.
Can anybody help me ?

I'll be appreciative for any suggestions.

[Nicholas Paldino [.NET/C# MVP]]

Michael,

Without seeing the code for your COM object and the code that is calling
it (how it is used), it's (very) difficult to tell. Can you show the code?

--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Michal" <mi*****@o2.pl> wrote in message
news:ck**********@atlantis.news.tpi.pl...

Hi.

I've got a big problem :(... I wrote COM dll in c# for an application.
This
application works fine with this dll until i'll close that application.
Then
the error occurs:

.NET-BroadcastEventWindow.1.5000.0

The instruction at "0x04489f05" referenced memory at "0x00000030". The
memory could not be "read". Click on OK to terminate the program.
Can anybody help me ?

I'll be appreciative for any suggestions.

[Michal]

It's OK now, I figured it out :) Before I close my application, I run
GC.Collect() - garbage collector runs, cleans and the error doesn't apear :)

Greets

Michal
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in
message news:uS**************@TK2MSFTNGP15.phx.gbl...

Michael,

Without seeing the code for your COM object and the code that is calling it (how it is used), it's (very) difficult to tell. Can you show the

code?

[Nicholas Paldino [.NET/C# MVP]]

Michael,

That seems like only a stop-gap measure for code that didn't properly
clean itself up. Are you sure you are releasing all resources properly?

--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Michal" <mi*****@o2.pl> wrote in message
news:ck**********@atlantis.news.tpi.pl...

It's OK now, I figured it out :) Before I close my application, I run
GC.Collect() - garbage collector runs, cleans and the error doesn't apear
:)

Greets

Michal
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote
in
message news:uS**************@TK2MSFTNGP15.phx.gbl...

Michael,

Without seeing the code for your COM object and the code that is

calling

it (how it is used), it's (very) difficult to tell. Can you show the

code?

[Richard Blewett [DevelopMentor]]

Did you release the COM object with Marshal.ReleaseCOMObject when you were finished with it in your code? This is the equivelent of doing IUnknown::Release in .NET terms and will hopefully get the runtime callable wrapper to release the underlying COM object at that point rather than waiting for a GC to occur.

Regards

Richard Blewett - DevelopMentor
http://staff.develop.com/richardb/weblog

nntp://news.microsoft.com/microsoft.public.dotnet.languages.csharp/<ck**********@atlantis.news.tpi.pl>

It's OK now, I figured it out :) Before I close my application, I run
GC.Collect() - garbage collector runs, cleans and the error doesn't apear :)

Greets

Michal

[Alan Hamilton]

I've encountered this when using COM and multiple threads. You have
to change [STAThread] to [MTAThread] on your Main() function.