标签：des style blog http io ar color os 使用
首先需要声明一个程序集名称，
// specify a new assembly name var assemblyName = new AssemblyName("Kitty");
从当前应用程序域获取程序集构造器，
// create assembly builder var assemblyBuilder=AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.RunAndSave);
有几种动态程序集构造访问限制：
在程序集中构造动态模块，
// create module builder var moduleBuilder = assemblyBuilder.DefineDynamicModule("KittyModule", "Kitty.exe");
模块即是代码的集合，一个程序集中可以有多个模块。并且理论上讲，每个模块可以使用不同的编程语言实现，例如C#/VB。
构造一个类型构造器，
// create type builder for a class var typeBuilder = moduleBuilder.DefineType("HelloKittyClass", TypeAttributes.Public);
通过类型构造器定义一个方法，获取方法构造器，获得方法构造器的IL生成器，通过编写IL代码来定义方法功能。
// create method builder var methodBuilder = typeBuilder.DefineMethod( "SayHelloMethod", MethodAttributes.Public | MethodAttributes.Static, null, null); // then get the method il generator var il = methodBuilder.GetILGenerator(); // then create the method function il.Emit(OpCodes.Ldstr, "Hello, Kitty!"); il.Emit(OpCodes.Call, typeof(Console).GetMethod("WriteLine", new Type[] { typeof(string) })); il.Emit(OpCodes.Call, typeof(Console).GetMethod("ReadLine")); il.Emit(OpCodes.Pop); // we just read something here, throw it. il.Emit(OpCodes.Ret);
创建类型，
// then create the whole class type var helloKittyClassType = typeBuilder.CreateType();
如果当前程序集是可运行的，则设置一个程序入口，
// set entry point for this assembly assemblyBuilder.SetEntryPoint(helloKittyClassType.GetMethod("SayHelloMethod"));
将动态生成的程序集保存成磁盘文件，
// save assembly assemblyBuilder.Save("Kitty.exe");
此时，通过反编译工具，将Kitty.exe反编译成代码，
using System; public class HelloKittyClass { public static void SayHelloMethod() { Console.WriteLine("Hello, Kitty!"); Console.ReadLine(); } }
运行结果，
using System; using System.Reflection; using System.Reflection.Emit; namespace EmitIntroduction { class Program { static void Main(string[] args) { // specify a new assembly name var assemblyName = new AssemblyName("Kitty"); // create assembly builder var assemblyBuilder = AppDomain.CurrentDomain .DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.RunAndSave); // create module builder var moduleBuilder = assemblyBuilder.DefineDynamicModule( "KittyModule", "Kitty.exe"); // create type builder for a class var typeBuilder = moduleBuilder.DefineType( "HelloKittyClass", TypeAttributes.Public); // create method builder var methodBuilder = typeBuilder.DefineMethod( "SayHelloMethod", MethodAttributes.Public | MethodAttributes.Static, null, null); // then get the method il generator var il = methodBuilder.GetILGenerator(); // then create the method function il.Emit(OpCodes.Ldstr, "Hello, Kitty!"); il.Emit(OpCodes.Call, typeof(Console).GetMethod( "WriteLine", new Type[] { typeof(string) })); il.Emit(OpCodes.Call, typeof(Console).GetMethod("ReadLine")); il.Emit(OpCodes.Pop); // we just read something here, throw it. il.Emit(OpCodes.Ret); // then create the whole class type var helloKittyClassType = typeBuilder.CreateType(); // set entry point for this assembly assemblyBuilder.SetEntryPoint( helloKittyClassType.GetMethod("SayHelloMethod")); // save assembly assemblyBuilder.Save("Kitty.exe"); Console.WriteLine( "Hi, Dennis, a Kitty assembly has been generated for you."); Console.ReadLine(); } } }
标签：des style blog http io ar color os 使用
原文地址：http://www.cnblogs.com/bruceleeliya/p/4122473.html
