STA Thread Appartment - .NET Framework

Hey guys,
I am stuck in a problem very bad. I am using .net Remoting for my project to communicate within the TCP network. And after the process is done I have a function that displays a form (Upload Form) which upload the data file to our server. It used to work fine before I added remoting part into it (to make it able to communicate within TCP network).

The problem is, when my application tries to show the upload form, it throws this exception:
Current thread must be set to single thread apartment (STA) mode before OLE calls can be made. Ensure that your Main function has STAThreadAttribute marked on it.

By googling the error I found that I need to set the STAThread attribute right on the Main class. But I don’t know where to add this statement in my form. No matter wherever I add it. It still gives me the error.

Can anyone help me here PLEASE. Thanks very much.

Pulkit Zery

Jun 29 '07 #1

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7381

PulkitZery

Hey Guys,

I am getting this error when my application tries to show a form:
Current thread must be set to single thread apartment (STA) mode before OLE calls can be made. Ensure that your Main function has STAThreadAttribute marked on it.
By googling the exception message I found that I have to set the thread apartment to STA, so I added this code into my form_load event:
Threading.Thread.CurrentThread.SetApartmentState(T hreading.ApartmentState.STA)

But it throws the exception: Failed to set the specified COM apartment state.

I did some further research and found that I need to add <STAThread> to the main function. I created a new module and defined my main function and set the attribute to STAThread… But that did not help either and I got the first error message again.

I have no idea why is this happning. BTW this happens only if I use .net Remoting library to communicate in network.

I need to solve it ASAP. Can any one please help me out here. Thanks very much in advance for your help and time.

Thanks,
Pulkit Zery

Jun 29 '07 #2

kenobewan

4,871

Expert 4TB

My first step would be to check that all your references are correct.

Jun 30 '07 #3

kenobewan

4,871

Expert 4TB

Please do not multi post it is against site rules as stated in the FAQs. Thanks.

Jun 30 '07 #4

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