PLS HELP: ActiveX control / apartment threading error

[Sreejumon [MVP]]

Hi,

If you want to use the activex controls in your asp.net
page, you ahev to use the single aprtment thread model.
For that please add the "aspcompat=true" attribute the
page directive.

Let me know the result.

Regards
Sreejumon
DOTNET makes IT happen

>-----Original Message-----
>I am using an ActiveX control in a VB.NET user control.

I'm using this

>VB.NET user control inside of an ASP.NET webform. When I

run the webform I

>get this error:
>Could not instantiate ActiveX control 'd940e4d2-6079-11ce-

88cb-0020af6845f6'

>because the current thread is not in a single-threaded

apartment.

>
>In my VB.NET usercontrol I put this (after researching on

the internet):

><STAThread()> Public Sub Main()
> System.Threading.Thread.CurrentThread.ApartmentSta te =
>Threading.ApartmentState.STA
>End Sub
>
>Still get the same error. I know NOTHING about COM.
>
>Any ideas?
>
>Thanks,
>Robert
>
>
>.
>

[Alvin Bruney]

try manually re-registering the component again.
this seems to be a registration problem before being a thread problem unless
you are doing some complex stuff

"VB Programmer" <growNO-SPAM@go-intech.com> wrote in message
news:OPbE7VZRDHA.2148@TK2MSFTNGP11.phx.gbl...

> I am using an ActiveX control in a VB.NET user control. I'm using this
> VB.NET user control inside of an ASP.NET webform. When I run the webform

I

> get this error:
> Could not instantiate ActiveX control

'd940e4d2-6079-11ce-88cb-0020af6845f6'

> because the current thread is not in a single-threaded apartment.
>
> In my VB.NET usercontrol I put this (after researching on the internet):
> <STAThread()> Public Sub Main()
> System.Threading.Thread.CurrentThread.ApartmentSta te =
> Threading.ApartmentState.STA
> End Sub
>
> Still get the same error. I know NOTHING about COM.
>
> Any ideas?
>
> Thanks,
> Robert
>
>

[VB Programmer]

Thanks for your response.

The good news is that I don't get that error anymore after adding that
directive to my aspx page. The bad news is that my user control (created in
VB.NET & contains the non-managed ActiveX control) doesn't show up on the
page. In fact, at design time it shows up at the bottom of the webform, I
guess because I dont have a "custom designer" or something.

Any ideas why this control doesn't show up?

"Sreejumon [MVP]" <sreeju_uss@hotmail.com> wrote in message
news:060101c3459f$eb15d8e0$a301280a@phx.gbl...

> Hi,
>
> If you want to use the activex controls in your asp.net
> page, you ahev to use the single aprtment thread model.
> For that please add the "aspcompat=true" attribute the
> page directive.
>
> Let me know the result.
>
> Regards
> Sreejumon
> DOTNET makes IT happen
>

> >-----Original Message-----
> >I am using an ActiveX control in a VB.NET user control.

> I'm using this

> >VB.NET user control inside of an ASP.NET webform. When I

> run the webform I

> >get this error:
> >Could not instantiate ActiveX control 'd940e4d2-6079-11ce-

> 88cb-0020af6845f6'

> >because the current thread is not in a single-threaded

> apartment.

> >
> >In my VB.NET usercontrol I put this (after researching on

> the internet):

> ><STAThread()> Public Sub Main()
> > System.Threading.Thread.CurrentThread.ApartmentSta te =
> >Threading.ApartmentState.STA
> >End Sub
> >
> >Still get the same error. I know NOTHING about COM.
> >
> >Any ideas?
> >
> >Thanks,
> >Robert
> >
> >
> >.
> >