要查看完整的PowerShell文件对象的属性，其实不需要去翻MSDN，然后把System.IO.FileInfo类的属性找出来，那样太麻烦了，而且貌似在PowerShell中，并不能完全按照.NET框架中提供的信息来操作。（www.jb200.com 脚本学堂）
PS C:Userssplaybow> Get-Item d:1.txt | Get-Member -MemberType property
TypeName: System.IO.FileInfo
Name MemberType Definition
---- ---------- ----------
Attributes Property System.IO.FileAttributes Attributes {get;set;}
CreationTime Property System.DateTime CreationTime {get;set;}
CreationTimeUtc Property System.DateTime CreationTimeUtc {get;set;}
Directory Property System.IO.DirectoryInfo Directory {get;}
DirectoryName Property System.String DirectoryName {get;}
Exists Property System.Boolean Exists {get;}
Extension Property System.String Extension {get;}
FullName Property System.String FullName {get;}
Is
readonly Property System.Boolean IsReadOnly {get;set;}
LastAccessTime Property System.DateTime LastAccessTime {get;set;}
LastAccessTimeUtc Property System.DateTime LastAccessTimeUtc {get;set;}
LastWriteTime Property System.DateTime LastWriteTime {get;set;}
LastWriteTimeUtc Property System.DateTime LastWriteTimeUtc {get;set;}
Length Property System.Int64 Length {get;}
Name Property System.String Name {get;}
