使用.NET的Reflection.Emit生成一个接口

AssemblyBuilder assemblyBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(new AssemblyName("MyDynamicAssembly"), AssemblyBuilderAccess.Run);
ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule("MyDynamicModule");

TypeBuilder typeBuilder = moduleBuilder.DefineType("MyInterface", TypeAttributes.Interface | TypeAttributes.Abstract | TypeAttributes.Public);

// 添加方法和属性到接口中
MethodBuilder methodBuilder = typeBuilder.DefineMethod("MyMethod", MethodAttributes.Public | MethodAttributes.Abstract | MethodAttributes.Virtual, typeof(void), new Type[] { typeof(string) });
typeBuilder.DefineMethodOverride(methodBuilder, typeof(object).GetMethod("ToString"));

PropertyBuilder propertyBuilder = typeBuilder.DefineProperty("MyProperty", PropertyAttributes.HasDefault, typeof(string), null);
MethodBuilder getMethodBuilder = typeBuilder.DefineMethod("get_MyProperty", MethodAttributes.Public | MethodAttributes.Abstract | MethodAttributes.SpecialName | MethodAttributes.Virtual, typeof(string), Type.EmptyTypes);
MethodBuilder setMethodBuilder = typeBuilder.DefineMethod("set_MyProperty", MethodAttributes.Public | MethodAttributes.Abstract | MethodAttributes.SpecialName | MethodAttributes.Virtual, typeof(void), new Type[] { typeof(string) });
typeBuilder.DefineProperty("MyProperty", PropertyAttributes.HasDefault, typeof(string), new MethodBuilder[] { getMethodBuilder, setMethodBuilder });

Type interfaceType = typeBuilder.CreateType();