# [.net] FolderBrowserDialog not working

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Jnz86    228
Hi, i use the following code to ask user for folder:
FolderBrowserDialog* fb = new FolderBrowserDialog();
System::Windows::Forms::DialogResult res = fb-&gt;ShowDialog();

if (fb != DialogResult::OK)
return;


And this is what i get: Well, as you can see it doesn't work. Maybe someone had similar problem ? And btw, i checked the msdn... [Edited by - Jnz86 on July 19, 2005 8:43:58 AM]

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jods    367
I remember seeing this before. It's a known bug.

Unfortuneately for you, I don't remember the whereabouts, but I'm sure you'll find the answer quite easily with google.

Regards,
jods

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ernow    732
The Folderbrowser dialog is a very special dialog for two reasons:
1. It needs special security permissions. So if your code is not running under Full trust (use caspol.exe -rsg to find out about that) you might need to assign the file/folderbrowser permission to your app.
2. It is an ActiveX (COM) control that needs the [STAThread] attribute on the main thread. (Did you remove that???)

Cheers

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Jnz86    228
Quote:
 2. It is an ActiveX (COM) control that needs the [STAThread] attribute on the main thread. (Did you remove that???)

my WinMain looks like this:

System::Threading::Thread::CurrentThread->ApartmentState = System::Threading::ApartmentState::STA;Application::Run(new ptIDE::FormIDE());

so if i understood well the STAThread attribute is OK, right? (Sorry I am new to .NET)

Quote:
 1. It needs special security permissions. So if your code is not running under Full trust (use caspol.exe -rsg to find out about that) you might need to assign the file/folderbrowser permission to your app.

I need to check that...

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ernow    732
Your STA attribute seems to be ok.

Are you running from a (mapped) network drive a share or something like that?

Cheers

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Jnz86    228
Quote:
 Are you running from a (mapped) network drive a share or something like that?

No, i am running locally on my PC.

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Jnz86    228
Quote:
 1. It needs special security permissions. So if your code is not running under Full trust (use caspol.exe -rsg to find out about that) you might need to assign the file/folderbrowser permission to your app.

Tell me more about it, maybe it's the problem...
Also, maybe you know some kind of link, or smthing which can help me :)