FileAttributes attributes = File.GetAttributes(filePath);
//var FileInfo = new FileInfo(filePath);
//var attributes = FileInfo.Attributes;
var IsHidden = (attributes & FileAttributes.Hidden) == FileAttributes.Hidden;

//文件夹一样的方法
//var DirInfo = new DirectoryInfo(dirPath);
//var IsHidden = (DirInfo.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden;