我需要在蓝色棱镜中创建几个消息框以进行演示。这是我已经走了多远:
1. I am using the code stage
2. In the Inputs tab I have declared my Message and have given it a value
3. In the Code tab I have declared: `MessageBox.Show(Message)`
当我验证代码时,我得到一个编译器错误:“
'MessageBox' 未声明“
非常感谢您的指导。提前致谢!