Hi Torsten, There are a number of options:
1) You can modify the ACL using WMI in the System.Management namespace 2) Use p/Invoke directly 3) There's a component that comes with the ADSI SDK (adssecurity.dll) On the WMI route, there are some samples available in MSDN and some good postings on the subject if you search groups.google.com. I recommend looking for GetSecurityDescriptor - that's the function you'll need to call to change the ACLs. There's quite a long thread on microsoft.public.dotnet.languages.csharp with some great info. It takes a while to write the code, and a lot of testing. I've seen some strange behaviour that I haven't been able to determine the source of. If you can, I would try and avoid dynamically changing the ACLs. Can you setup a special directory that already have full control, and write your file there? Unless you're application is somehow changing the permissions dynamically, this is a much easier route. Jeff -----Original Message----- From: Torsten Kramer [mailto:[EMAIL PROTECTED]] Sent: May 06, 2002 6:10 AM To: [EMAIL PROTECTED] Subject: Modify ACL from .NET Hi! Does anyone know how to modify the Access Control List (ACL) of a NTFS file or directory under .NET? I want to create a file and then give the Users group the Full Control permission for the file. Thanks, Torsten You can read messages from the DOTNET archive, unsubscribe from DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com. You can read messages from the DOTNET archive, unsubscribe from DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.