Windows applicatipn中的Java脚本问题 [英] java script in windows applicatipn problem

问题描述

我在Windows应用程序中使用了Java脚本.但我在
遇到错误

i used java script in windows application. but i got error at

this.result = provider.CompileAssemblyFromSource  
 i.e  Object reference not set to an instance of an object

怎么做?

how to do it?

 CodeDomProvider provider;
       CompilerParameters para;
       CompilerResults result;
       Assembly assembly;
       Type jsType;
       object jsObject;


public  string Message;

        public void ShowMessage()
        {
            MessageBox.Show(this.Message);
        }


        private void button1_Click_1(object sender, EventArgs e)
        {
            this.para = new CompilerParameters();
            this.para.GenerateInMemory = true;

            string text =
                    @"class JSSample
                            {
                                var obj;
                                function Main()
                                {
                                    obj.Message = 'Hello world!';
                                    obj.ShowMessage();
                                }
                            }";

            this.result = provider.CompileAssemblyFromSource(this.para, text);  // I got error here

            this.assembly = result.CompiledAssembly;

            this.jsType = assembly.GetType("JSSample");

            this.jsObject = Activator.CreateInstance(this.jsType);

            this.jsType.InvokeMember(
                "obj",
                BindingFlags.SetField,
                null,
                this.jsObject,
                new object[] { this });

            this.jsType.InvokeMember(
                "Main",
                BindingFlags.InvokeMethod,
                null,
                this.jsObject,
                null);
        }
    }

推荐答案

CodeDomProvider旨在用于已编译的jscript文件，因为它不是被编译为的"javascript".并使用CLR.

如果要在应用程序中使用JavaScript引擎，请尝试使用以下一种方法:
http://jint.codeplex.com/ [ ^ ]

http://javascript.codeplex.com/ [ ^ ]

http://jurassic.codeplex.com/ [ ^ ]

The CodeDomProvider is meant to be used for compiled jscript files, this is not "javascript" as it is compiled to .net and uses the CLR.

If you want a javascript engine within your application try using one of the following:
http://jint.codeplex.com/[^]

http://javascript.codeplex.com/[^]

http://jurassic.codeplex.com/[^]

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