//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);