Set file permissions in C #

Question

I want to set permissions for a file to "cannot be deleted" in C #, read-only. But I do not know how to do this. Can you help me?

Answer 1

See File.SetAttributes () . There are many examples online about how to use it.

Taken from this MSDN page:

FileAttributes attributes = File.GetAttributes(path); if ((attributes & FileAttributes.Hidden) == FileAttributes.Hidden) { // Show the file. attributes = RemoveAttribute(attributes, FileAttributes.Hidden); File.SetAttributes(path, attributes); Console.WriteLine("The {0} file is no longer hidden.", path); } else { // Hide the file. File.SetAttributes(path, File.GetAttributes(path) | FileAttributes.Hidden); Console.WriteLine("The {0} file is now hidden.", path); } 

Answer 2

You forgot to copy in the RemoveAttribute method, which:

  private static FileAttributes RemoveAttribute(FileAttributes attributes, FileAttributes attributesToRemove) { return attributes & ~attributesToRemove; } 

Answer 3

Is it about attributes (see jb. Answer) or permissions, i.e. read and write access, etc.? In the latter case, see File.SetAccessControl .

From MSDN:

 // Get a FileSecurity object that represents the // current security settings. FileSecurity fSecurity = File.GetAccessControl(fileName); // Add the FileSystemAccessRule to the security settings. fSecurity.AddAccessRule(new FileSystemAccessRule(account, rights, controlType)); // Set the new access settings. File.SetAccessControl(fileName, fSecurity); 

See How to grant full permission to a file created by my application for ALL users? for a more specific example.

In the original question, it sounds like you want to deny the FileSystemRights.Delete right.