Use of .NET classes like Path in winJS

Question

Can I use .Net classes, like Path (in my case for Path.Combine, or Path.GetExtension) in WinJS application?

Thanks for help,

Greetings.

Answer 1

You can use a Windows Runtime Component written in .Net. You cannot use .Net directly in a JavaScript app.

See Walkthrough: Creating a simple component in C# or Visual Basic and calling it from JavaScript

See .NET for Windows Store apps for info on the parts of .Net available to Windows Store apps. Path.Combine and Path.GetExtention are both present.

--Rob

Answer 2

Be aware that combining a WinRT component written in a .NET language with JavaScript introduces a significant memory overhead, as you now have two managed environments (two garbage collectors) in the same process. I have a blog post that gives some details: http://kraigbrockschmidt.com/blog/?p=497.

There's no rule against doing components in C#, but the overhead is something to be aware of. You'll want to decide whether using the APIs from .NET is worth that cost.

Kraig

Author, Programming Windows 8 Apps with HTML, CSS, and JavaScript, a free ebook from Microsoft Press