Is there any way to open the specified directory and locate the file?

[nasterhe]

It's easy to do under Windows, but I don't know what to do with Linux? Is there any generic code that can be implemented?Thanks.

[thevortexcloud]

Can you elaborate more on what you want to do? Avalonia's file picker APIs are the same for all platforms.

[nasterhe]

When I generate a disk file in the program, I need to open the operating system window outside the software and select the file, so that the user can see it immediately and easily manipulate the file.

[thevortexcloud]

So you want to open the OS file browser? That's sort of complicated on Linux. There is no single or defacto file browser for Linux. Some file browsers may not even support the functionality you want. If you are targeting a specific distribution you can make some assumptions (even though they may still be wrong, EG it's possible to install Nautilus on KUbuntu, which out of the box uses Dolphin). The easiest generic thing you can probably do is run xdg-open FOLDERPATH to open the folder. Assuming the user:

1. Has a file browser installed
2. Has xdg-open installed

It will probably work. If you give it the file path however it will try to open the actual file. The next more complicated thing you can is try to use dbus. Avalonia already uses dbus on Linux so it should be possible to do without pulling in extra dependencies. Apparently if you send a message to org.freedesktop.FileManager1 on the session bus and call org.freedesktop.FileManager1.ShowItems it will do exactly what you want. It seems to work for me on Dolphin, but I can't say I have ever tried this on other file managers. According to the official docs only Dolphin and Nautlis implement it. But I suspect that list is fairly old. In any case, if a file manager does not implement the dbus interface it also wont work.

https://www.freedesktop.org/wiki/Specifications/file-manager-interface/
https://unix.stackexchange.com/questions/364997/open-a-directory-in-the-default-file-manager-and-select-a-file

tl;dr It's possibly possible but complicated and you should assume it may never work.

[nasterhe]

Thanks.It seems that I have no choice but to give up.

[thevortexcloud]

As I mentioned, it's easier to display a folder than display a folder with a specific file. I would say you should still try to cater to the majority of desktop users. Most of which use Gnome or KDE. Both of which ship with file browsers that do what you want. But trying to cater to every edge case on Linux is in most cases practically impossible.

Also: If it does not work you can always fallback to displaying a dialogue with the file path which someone can manually copy and paste.

[nasterhe]

@thevortexcloud Another question, is there a way to make Linux and Windows open files with default programs through code. Just like in a Windows program, Office will start and open the file through the code below.Thanks.

System.Diagnostics.Process.Start(@"d:\1.xls");