File.Move does not inherit permissions from target directory?

Question

In case something goes wrong in creating a file, I've been writing to a temporary file and then moving to the destination. Something like:

        var destination = @"C:\foo\bar.txt";         var tempFile = Path.GetTempFileName();         using (var stream = File.OpenWrite(tempFile))         {             // write to file here here         }          string backupFile = null;         try         {             var dir = Path.GetDirectoryName(destination);             if (!Directory.Exists(dir))             {                 Directory.CreateDirectory(dir);                 Util.SetPermissions(dir);             }              if (File.Exists(destination))             {                 backupFile = Path.Combine(Path.GetTempPath(), new Guid().ToString());                 File.Move(destination, backupFile);             }              File.Move(tempFile, destination);              if (backupFile != null)             {                 File.Delete(backupFile);             }         }         catch(IOException)         {             if(backupFile != null && !File.Exists(destination) && File.Exists(backupFile))             {                 File.Move(backupFile, destination);             }         } 

The problem is that the new "bar.txt" in this case does not inherit permissions from the "C:\foo" directory. Yet if I create a file via explorer/notepad etc directly in the "C:\foo" there's no issues, so I believe the permissions are correctly set on "C:\foo".

Update

Found Inherited permissions are not automatically updated when you move folders, maybe it applies to files as well. Now looking for a way to force an update of file permissions. Is there a better way overall of doing this?

Answer 1

Found what I needed was this:

var fs = File.GetAccessControl(destination); fs.SetAccessRuleProtection(false, false); File.SetAccessControl(destination, fs); 

This resets the file permissions to inherit.