位置：首页 > 综合知识 >

vb，nettab顺序怎么写

综合知识1.59W

1.vb net tab page 隐藏和显示代码怎么写

见下面的代码

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

TabPage2.Parent = Nothing '隐藏TabPage2

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

TabPage2.Parent = TabControl1 '显示TabPage2

End Sub

End Class

2.vb net tab page 隐藏和显示代码怎么写

见下面的代码 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click TabPage2.Parent = Nothing '隐藏TabPage2 End Sub Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TabPage2.Parent = TabControl1 '显示TabPage2 End SubEnd Class。

3.vb.net文本框输入后按回车或tab判断是不是数字,不是就跳出提示

你用的都是vb6的代码，改成：

Private Sub TextBox1_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.LostFocus

If IsNumeric(TextBox1.Text) = False Then

MsgBox（"输入有非数字字符，请重新输入"， vbOKOnly， "友情提示"）

TextBox1.Focus()

Return

End If

End Sub