//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);以上就是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的详细内容，更多请关注php中文网其它相关文章！
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