C＃：运算符'+'不能应用于'string'和'method group'类型的操作数 [英] C#: Operator '+' cannot be applied to operands of type 'string' and 'method group'

问题描述

messageBox.Show("student First Name: " + aryStudent[i].getFirstName + "\r\n student Last Name: " + aryStudent[i].getLastName() + "\r\n student number: " + aryNumber[i].getNumber, "student " +i.tostring(), MessageboxButtons...

"Student First Name: " +aryStudent[i].getFirstName

- 红色下划线

如果我把括号放在.getFirstName之后然后是红线涵盖.getNumber



i控制了其他一切。

将学生姓名和号码放入我班级的文本框中在TAFE

如果你看到了，请帮忙我错了

-is the red underlined
if i put the brackets after .getFirstName then the red line covers up to .getNumber

i have everything else under control.
it is to place a student name and number into a textbox for my class at TAFE
Please help if you see anything wrong

推荐答案

我想 getFirstName 和 getNumber 是方法。所以，你必须使用括号来调用它们。类似于：

I guess that getFirstName and getNumber are methods. So, you have to call them using parenthesis. Something like:

messageBox.Show("student First Name: " + aryStudent[i].getFirstName() + "\r\n student Last Name: " + aryStudent[i].getLastName() + "\r\n student number: " + aryNumber[i].getNumber(), "student " +i.tostring());

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