Problem with FolderBrowserDialog in c#

[jambon]

When I use FolderBrowserDialog functions, treview of computer doesn't appear in the window.

It works properly without TestStand but as soons as this function is executed in TestStand just the OK, Cancel,

and Create a New Folder buttons are available.

[James_Grey]

The first thing to try for a problem like this is to put the step that displays the dialog in a subsequence. In the call to the subsequence, configure the sequence to run in a new thread and select the Edit Sequence Call>>Settings...>>Use Single-Threaded Apartment option.  You can insert a Wait step after the sequence call to keep the parent sequence from proceeding until the subsequence completes.

If this fixes it, it is because the dialog uses an ActiveX control that requires a Single-Threaded Apartment thread.

[jambon]

ouahhhhh!!! It works!!! Thank you

The only disadvantage is that I must create another sequence,  can I directly use this step by changing his mode function or anything else?

[Scott_Richardson]

jambon -
All execution thread are initialized to be MTA (multi-threaded apartment) and the sequence call that you did is the only way to get an STA threading. The only other option would be to write a code module that launches a separate thread that initializes to STA and waits for the thread to complete. This is typically not as easy as just doing a sequence call.

[jambon]

ok thanks for all