在单个文件上设置安全性？

Question

我试图在单个文件上实现安全性,以防止访问该文件或删除它是代码:

//Create file
FileStream oFileStreamDec = new FileStream(@"C:\Decrypted_AMS.cfg", FileMode.Create, FileAccess.ReadWrite, FileShare.None);
oFileStreamDec.Write(DecryptedXML, 0, DecryptedXML.Length);
//Create access rules
FileSystemAccessRule oAccessRuleFullControl = new FileSystemAccessRule(WindowsIdentity.GetCurrent().Name, FileSystemRights.FullControl, AccessControlType.Allow);
//Create file security and apply rules to it
FileSecurity oFileSecurity = new FileSecurity(@"C:\Decrypted_AMS.cfg", AccessControlSections.All);
oFileSecurity.AddAccessRule(oAccessRuleFullControl);
//Here is the problem !!!!!!!
oFileStreamDec.SetAccessControl(oFileSecurity);
oFileStreamDec.Close();

我已经尝试在关闭流并设置访问控制后再次打开文件但是发生了同样的问题,我也尝试过除了文件流以外的普通文件也是如此,我有一个拥有所有权限的管理员帐户有什么问题以及如何解决它？

Answer 1

试试这个,

FileStream oFileStreamDec = new FileStream(@"C:\Decrypted_AMS.cfg", FileMode.Create, FileAccess.ReadWrite, FileShare.None);
oFileStreamDec.Write(DecryptedXML, 0, DecryptedXML.Length);
// Close the File first
oFileStreamDec.Close();
//Create file security and apply rules to it
FileSecurity oFileSecurity = new FileSecurity();
oFileSecurity.AddAccessRule(new System.Security.AccessControl.FileSystemAccessRule("Everyone", System.Security.AccessControl.FileSystemRights.FullControl, System.Security.AccessControl.AccessControlType.Allow));
System.IO.File.SetAccessControl(@"C:\Decrypted_AMS.cfg", oFileSecurity);