If you are looking for a solution of running code library cross environment, you probly think javascript, we need share code/logic through environment, and coding one and once only.
There are 2 ways of excution javascript
- Headless browser - Internet explorer without UI, you can run js in simulation envireonment.
- Js Engine/Framework - Excute javascript with engine support
The headless browser:
- WebKit.Net(free)
- Awesomium It is based on Chrome/WebKit and works like a charm. There is a free license available but also a commercial one and if need be you can buy the source code
- HTML Agility Pack (free) (An HTML Parser library, NOT a headless browser)
This helps with extracting information from HTML etc. and might be useful in your case (possibly in combination with HttpWebRequest) - PhantomJS - full featured headless web browser. Often used in pair with Selenium which allows you to access the browser from .NET application.
- Optimus - lightweight headless web browser. It's in beta but it is sufficient for some cases.
But they ALL dead(2021/1/22), so there is only one way posible.
The JS Engine
- Microsoft.AspNetCore.NodeServices is obsolted, it involve NodeJS run time
- microsoft/ClearScript ClearScript is a library that makes it easy to add scripting to your .NET applications. It currently supports JavaScript (via V8 and JScript) and VBScript.
- JavaScriptEngineSwitcher.ChakraCore Microsoft will continue to provide security updates for ChakraCore 1.11 until 9th March 2021 but do not intend to support it after that.
// create a script engine
using (var engine = new V8ScriptEngine())
{
// expose a host type
engine.AddHostType("Console", typeof(Console));
engine.Execute("Console.WriteLine('{0} is an interesting number.', Math.PI)");
// expose a host object
engine.AddHostObject("random", new Random());
engine.Execute("Console.WriteLine(random.NextDouble())");
// expose entire assemblies
engine.AddHostObject("lib", new HostTypeCollection("mscorlib", "System.Core"));
engine.Execute("Console.WriteLine(lib.System.DateTime.Now)");
// create a host object from script
engine.Execute(@"
birthday = new lib.System.DateTime(2007, 5, 22);
Console.WriteLine(birthday.ToLongDateString());
");
// use a generic class from script
engine.Execute(@"
Dictionary = lib.System.Collections.Generic.Dictionary;
dict = new Dictionary(lib.System.String, lib.System.Int32);
dict.Add('foo', 123);
");
// call a host method with an output parameter
engine.AddHostObject("host", new HostFunctions());
engine.Execute(@"
intVar = host.newVar(lib.System.Int32);
found = dict.TryGetValue('foo', intVar.out);
Console.WriteLine('{0} {1}', found, intVar);
");
// create and populate a host array
engine.Execute(@"
numbers = host.newArr(lib.System.Int32, 20);
for (var i = 0; i < numbers.Length; i++) { numbers[i] = i; }
Console.WriteLine(lib.System.String.Join(', ', numbers));
");
// create a script delegate
engine.Execute(@"
Filter = lib.System.Func(lib.System.Int32, lib.System.Boolean);
oddFilter = new Filter(function(value) {
return (value & 1) ? true : false;
});
");
// use LINQ from script
engine.Execute(@"
oddNumbers = numbers.Where(oddFilter);
Console.WriteLine(lib.System.String.Join(', ', oddNumbers));
");
// use a dynamic host object
engine.Execute(@"
expando = new lib.System.Dynamic.ExpandoObject();
expando.foo = 123;
expando.bar = 'qux';
delete expando.foo;
");
// call a script function
engine.Execute("function print(x) { Console.WriteLine(x); }");
engine.Script.print(DateTime.Now.DayOfWeek);
// examine a script object
engine.Execute("person = { name: 'Fred', age: 5 }");
Console.WriteLine(engine.Script.person.name);
// read a JavaScript typed array
engine.Execute("values = new Int32Array([1, 2, 3, 4, 5])");
var values = (ITypedArray)engine.Script.values;
Console.WriteLine(string.Join(", ", values.ToArray()));
}