在.Net Core中获取文件扩展属性 [英] Obtaining file extended properties in .Net Core

问题描述

我想使用 .Net Core 从文件中读取扩展属性，例如产品版本， Author 等.

I want to read extended properties like Product Version, Author, etc. from a file using .Net Core.

诸如 FileVersionInfo 之类的类用于提供版本信息，Shell对象用于读取有关文件的更多信息，等等.

There were classes like FileVersionInfo that used to provide version information, Shell object to read more about file, etc.

现在，我再也找不到此类了.如何使用 .Net Core 读取此类信息?

Now, I don't find such classes any more. How do I read such info using .Net Core?

推荐答案

FileVersionInfo 可以在 System.Diagnostics 命名空间从一开始，所以您只需要安装该软件包:

FileVersionInfo can be easily found on NuGet, it's been located in System.Diagnostics namespace from the beginning, so you need just to install the package:

Install-Package System.Diagnostics.FileVersionInfo

并照常使用此类，获取一些 IFileProvider ，例如， PhysicalFileProvider :

using System.Diagnostics;

var provider = new PhysicalFileProvider(applicationRoot);
// the applicationRoot contents
var contents = provider.GetDirectoryContents("");
// a file under applicationRoot
var fileInfo = provider.GetFileInfo("wwwroot/js/site.js");
// version information
var myFileVersionInfo = FileVersionInfo.GetVersionInfo(fileInfo.PhysicalPath);
//  myFileVersionInfo.ProductVersion is available here

对于 Author 信息，您应该使用 FileSecurity 类，该类位于

For Author information you should use FileSecurity class, which is located in System.Security.AccessControl namespace, with type System.Security.Principal.NTAccount:

Install-Package System.Security.AccessControl
Install-Package System.Security.Principal

之后的用法类似:

using System.Security.AccessControl;
using System.Security.Principal;

var fileSecurity = new FileSecurity(fileInfo.PhysicalPath, AccessControlSections.All);
// fileSecurity.GetOwner(typeof(NTAccount)) is available here

现在的一般规则是，用谷歌搜索一个类的全限定名，并在其中添加 core 或 nuget ，因此，您肯定会获得所需的新文件位置.

General rule right now is to google the full qualified name for a class and add core or nuget to it, so you'll definitely get needed file with it's new location.

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