C#修改文件或文件夹的权限，为指定用户、用户组添加完全控制权限的具体代码介绍

//给Excel文件添加"Everyone,Users"用户组的完全控制权限 

FileInfo fi = new FileInfo(excelPath); 

System.Security.AccessControl.FileSecurity fileSecurity = fi.GetAccessControl(); 

fileSecurity.AddAccessRule(new FileSystemAccessRule("Everyone", FileSystemRights.FullControl, AccessControlType.Allow)); 

fileSecurity.AddAccessRule(new FileSystemAccessRule("Users", FileSystemRights.FullControl, AccessControlType.Allow)); 

fi.SetAccessControl(fileSecurity); 

//给Excel文件所在目录添加"Everyone,Users"用户组的完全控制权限 

DirectoryInfo di = new DirectoryInfo(Path.GetDirectoryName(excelPath)); 

System.Security.AccessControl.DirectorySecurity dirSecurity = di.GetAccessControl(); 

dirSecurity.AddAccessRule(new FileSystemAccessRule("Everyone", FileSystemRights.FullControl, AccessControlType.Allow)); 

dirSecurity.AddAccessRule(new FileSystemAccessRule("Users", FileSystemRights.FullControl, AccessControlType.Allow)); 

di.SetAccessControl(dirSecurity);