C#执行Javascript代码的几种方法总结

一、开源项目 javascript .net

地址： 它是google chrome v8引擎在.net上的封装，功能完善，性能相对较高，推荐使用! (缺点就是asp.net web应用上，好象会报错)

示例代码：

using noesis.javascript;
using system;
using system.collections.generic;

namespace jscsharp
{
    class program
    {
        static void main(string[] args)
        {
            using (javascriptcontext ctx = new javascriptcontext())
            {
                var i = ctx.run("1+2");
                console.writeline(i);//3
                ctx.run("var d = new date(2013,9-1,2,20,30,15)");
                var d = ctx.getparameter("d");
                console.writeline(d);//2013/9/2 20:30:15
                var j = ctx.run("function add(x,y){return x+y;};add(5,10);");
                console.writeline(j);//15
                ctx.run("var obj = {};obj.name='jimmy';obj.sex='male';obj.name='杨俊明'");
                var obj = ctx.getparameter("obj") as dictionary<string, object>;
                foreach (var key in obj.keys)
                {
                    console.writeline(string.format("{0}:{1}", key, obj[key]));
                    //name:杨俊明
                    //sex:male
                }
                var jsonarr = ctx.run("[{airport:'pek',name:'北京首都机场'},{airport:'xiy',name:'西安咸阳机场'}]") as array;
                foreach (var item in jsonarr)
                {
                    var json = item as dictionary<string, object>;
                    foreach (var key in json.keys)
                    {
                        console.writeline(string.format("{0}:{1}", key, json[key]));
                        //airport:pek
                        //name:北京首都机场
                        //airport:xiy
                        //name:西安咸阳机场
                    }
                }
                ctx.setparameter("x", 7);
                ctx.run("function add(x,y){return x+y;}; function sub(x,y){return x-y;};k = add(2,x);var t = sub(9,1);");
                var k = ctx.getparameter("k");
                console.writeline(k);//9
                var t = ctx.getparameter("t");
                console.writeline(t);//8
                console.read();
            }

        }

    }
}

部署时要注意，msvcp100.dll、msvcr100.dll这二个文件，要复制到bin目录下

二、利用microsoft.jscript.vsa

先添加microsoft.jscript、microsoft.vsa二个程序集的引用，然后就能用了，示例代码如下:

using microsoft.jscript;
using microsoft.jscript.vsa;
using system;

namespace jscsharp
{
    class program
    {
        static vsaengine engine = vsaengine.createengine();

        static void main(string[] args)
        {
            var i = (int)evaljscript("1+2;");
            console.writeline(i);//3
            var d = (dateobject)evaljscript("var d = new date(2013,9-1,2,20,30,15)");
            console.writeline(d);//mon sep 2 20:30:15 utc+8 2013
            var j = evaljscript("function add(x,y){return x+y;};add(5,10);");
            console.writeline(j);//15
            var obj = evaljscript("var obj = {};obj.name='jimmy';obj.sex='male';");
            console.writeline(obj);//male 注：只返回最后一条执行的语句结果
            console.read();
        }

 
        static object evaljscript(string jscript)
        {
            object result = null;
            try
            {
                result = microsoft.jscript.eval.jscriptevaluate(jscript, engine);
            }
            catch (exception ex)
            {
                return ex.message;
            }
            return result;

        }
    }
}

vsa的功能比较有限，多条语句执行时，只返回最后一条语句的执行结果。