Question

    Console.WriteLine("Would you like to administer the program?")
    Dim answer1 As String = Nothing

    If Console.ReadLine = "yes" Then
        Console.WriteLine("ok. that's the spirit!")

    End If

        If Console.ReadLine = "no" Then
        Console.WriteLine("ok")

    End If

为什么第二个if语句不起作用？

我应该为第二个if语句包含其他内容吗？

Answer 1

您正在尝试两次读取控制台，因此第二次不同。将Console.ReadLine存储到变量中并进行检查

Console.WriteLine("Would you like to administer the program?")
Dim answer1 As String = Console.ReadLine

If answer1 = "yes" Then
    Console.WriteLine("ok. that's the spirit!")

End If

If answer1 = "no" Then
    Console.WriteLine("ok")
End If

或者使用开关......

Answer 2

不清楚的问题？什么不起作用？试试这个;

    Console.WriteLine("Would you like to administer the program?")

      Select Case Console.ReadLine.ToLower
            Case "yes"
                 Console.WriteLine("ok. that's the spirit!")

            Case "no"
                 Console.WriteLine("ok")

            Case else
               ' Do nothing
        End Select

我使用一个参数，然后使用一个有效的if语句，同一个参数的第二个if语句不起作用。

2 个答案: