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关于Visual Studio ,vb.net语言代码

答案:1  悬赏:10  手机版
解决时间 2021-06-09 03:00
  • 提问者网友:抽煙菂渘情少年
  • 2021-06-08 15:51

为什么设计窗体的时候,见下图,调试出来的窗体左下角的label没法显示时间。

代码如下。

Public Class Form1

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

If DateTime.Now.Hour > 6 And DateTime.Now.Hour < 12 Then
Me.Text = "上午好"
ElseIf DateTime.Now.Hour > 12 And DateTime.Now.Hour < 18 Then
Me.Text = "下午好"
ElseIf DateTime.Now.Hour > 18 And DateTime.Now.Hour < 20 Then
Me.Text = "晚上好"
Else
Me.Text = "您好"

End If


Me.Width = 410
Me.Height = 300
Me.Text = "首页"
MessageBox.Show("欢迎使用学生档案信息系统")

End Sub

如果在if里按照书上介绍修改成,

If DateTime.Now.Hour > 6 And DateTime.Now.Hour < 12 Then
Me.Labe1.Text = "上午好"
ElseIf DateTime.Now.Hour > 12 And DateTime.Now.Hour < 18 Then
Me.Labe1.Text = "下午好"
ElseIf DateTime.Now.Hour > 18 And DateTime.Now.Hour < 20 Then
Me.Labe1.Text = "晚上好"
Else
Me.Labe1.Text = "您好"

则是错误的。该怎么修改。

最佳答案
  • 五星知识达人网友:神的生死簿
  • 2021-06-08 16:27

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load


If DateTime.Now.Hour > 6 And DateTime.Now.Hour < 12 Then
Labe1.Text = "上午好"
ElseIf DateTime.Now.Hour > 12 And DateTime.Now.Hour < 18 Then
Labe1.Text = "下午好"
ElseIf DateTime.Now.Hour > 18 And DateTime.Now.Hour < 20 Then
Labe1.Text = "晚上好"
Else
Labe1.Text = "您好"


End If


Me.Width = 410
Me.Height = 300
Me.Text = "首页"
MessageBox.Show("欢迎使用学生档案信息系统")


End Sub

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