Question

第一个IF语句确实运行良好，后面的其他IF语句不起作用。当我点击按钮时没有任何反应。

 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    If TextBox1.Text.Trim = "What is your name?" Then
        Label1.Text = "Hi there kid! I will tell you later!"
        Return
        If TextBox1.Text.Trim = "What is your age?" Then
            Label1.Text = "I was made in January 31,2014 well that is my birth date!"
            Return



            If TextBox1.Text = "Hi" Then
                Label1.Text = "Hi there also!"

            Else
                Label1.Text = "Do you have anything you want to say other than that?"
            End If
        End If
    End If
End Sub

Answer 1

我认为你可以删除return并使用else，如果是另一个if。它应该没问题

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    If TextBox1.Text.Trim = "What is your name?" Then
        Label1.Text = "Hi there kid! I will tell you later!"

    else if TextBox1.Text.Trim = "What is your age?" Then
        Label1.Text = "I was made in January 31,2014 well that is my birth date!"

    else if TextBox1.Text = "Hi" Then
        Label1.Text = "Hi there also!"

    Else
        Label1.Text = "Do you have anything you want to say other than that?"

    End If

End Sub

Answer 2

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    If TextBox1.Text.Trim = "What is your name?" Then
        Label1.Text = "Hi there kid! I will tell you later!"
    End If
    If TextBox1.Text.Trim = "What is your age?" Then
        Label1.Text = "I was made in January 31,2014 well that is my birth date!"
    End If
    If TextBox1.Text = "Hi" Then
        Label1.Text = "Hi there also!"
    Else
        Label1.Text = "Do you have anything you want to say other than that?"
    End If
End Sub

试试

第一个IF声明工作正常，而下一个声明不再适用

2 个答案: