SVN post-commit hook doesn't open up GUI

I've created a form application in .NET which will be used in the post-commit hook. the problem is that the UI of the application is not shown.

What may be the problem?

Thanks.

EDIT

my UI should show Issue numbers of the developer. from there he should 开发者_Go百科choose the Issue number that will be inserted to the log message. I've completed the script. But the UI is not shown.

Are you aware that the post-commit hook script is executed on the subversion server, right? It's not executed on the client side. As Sander states above, there shouldn't be any interaction. Usual things you do within a post-commit hook:

• Send email
• Trigger an automated build

Not really an answer to your question, but if you are using TortoiseSVN this piece about issue tracker integration might help.

Subversion hook scripts are designed as scripts, they shouldn't show user interface, or require user interaction.

Can you explain what you're trying to achieve?