如何使用Reflection.Emit注入文字表达式？

using System;
using System.Reflection;
using System.Reflection.Emit;

public class Program
{
    public static void Main()
    {
        // 创建动态程序集
        AssemblyName assemblyName = new AssemblyName("DynamicAssembly");
        AssemblyBuilder assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
        
        // 创建动态模块
        ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule("DynamicModule");
        
        // 创建动态类型
        TypeBuilder typeBuilder = moduleBuilder.DefineType("DynamicType", TypeAttributes.Public);
        
        // 创建动态方法
        MethodBuilder methodBuilder = typeBuilder.DefineMethod("DynamicMethod", MethodAttributes.Public | MethodAttributes.Static, typeof(void), null);
        
        // 创建IL生成器
        ILGenerator ilGenerator = methodBuilder.GetILGenerator();
        
        // 注入文字表达式
        ilGenerator.Emit(OpCodes.Ldstr, "Hello, Reflection.Emit!");
        ilGenerator.Emit(OpCodes.Call, typeof(Console).GetMethod("WriteLine", new Type[] { typeof(string) }));
        
        // 完成方法的定义
        ilGenerator.Emit(OpCodes.Ret);
        
        // 完成类型的定义
        Type dynamicType = typeBuilder.CreateType();
        
        // 创建对象并调用方法
        object instance = Activator.CreateInstance(dynamicType);
        MethodInfo dynamicMethod = dynamicType.GetMethod("DynamicMethod");
        dynamicMethod.Invoke(instance, null);
    }
}