TypeBuilder CreateDynamicType()

`CreateDynamicType()` 方法是一个私有静态方法，用于创建一个动态实体类的 `TypeBuilder` 对象。以下是该方法的完整代码： ``` static TypeBuilder CreateDynamicType() { AssemblyName assemblyName = new AssemblyName("DynamicAssembly"); AssemblyBuilder assemblyBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run); ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule("DynamicModule"); TypeBuilder typeBuilder = moduleBuilder.DefineType("MyClass", TypeAttributes.Public); typeBuilder.DefineField("id", typeof(int), FieldAttributes.Private); typeBuilder.DefineField("name", typeof(string), FieldAttributes.Private); PropertyBuilder propertyBuilder1 = typeBuilder.DefineProperty("Id", PropertyAttributes.None, typeof(int), null); MethodBuilder getterBuilder1 = typeBuilder.DefineMethod("get_Id", MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig, typeof(int), Type.EmptyTypes); ILGenerator ilGenerator1 = getterBuilder1.GetILGenerator(); ilGenerator1.Emit(OpCodes.Ldarg_0); ilGenerator1.Emit(OpCodes.Ldfld, typeBuilder.GetField("id", BindingFlags.NonPublic | BindingFlags.Instance)); ilGenerator1.Emit(OpCodes.Ret); propertyBuilder1.SetGetMethod(getterBuilder1); PropertyBuilder propertyBuilder2 = typeBuilder.DefineProperty("Name", PropertyAttributes.None, typeof(string), null); MethodBuilder getterBuilder2 = typeBuilder.DefineMethod("get_Name", MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig, typeof(string), Type.EmptyTypes); ILGenerator ilGenerator2 = getterBuilder2.GetILGenerator(); ilGenerator2.Emit(OpCodes.Ldarg_0); ilGenerator2.Emit(OpCodes.Ldfld, typeBuilder.GetField("name", BindingFlags.NonPublic | BindingFlags.Instance)); ilGenerator2.Emit(OpCodes.Ret); propertyBuilder2.SetGetMethod(getterBuilder2); return typeBuilder; } ``` 该方法首先创建一个 `AssemblyName` 对象，然后使用 `DefineDynamicAssembly()` 方法创建一个动态程序集的 `AssemblyBuilder` 对象。接下来，使用 `DefineDynamicModule()` 方法创建一个动态模块的 `ModuleBuilder` 对象。然后，使用 `DefineType()` 方法创建一个动态实