各位大大，小弟小白刚学代码，想把textbox数量根据自己需求动态增加和减少，代码如下：
Public Class Form1
Private N As Integer
Private PL As Integer 'textbox相对于窗体的duLeft
Private PT As Integer 'textbox相对于窗体的Top

Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles TextBox1.TextChanged
    TextBox1.Text = N
    For i = 1 To N
        Dim newtextbox As New TextBox
        newtextbox.Left = PL
        newtextbox.Top = PT
        Me.Controls.Add(newtextbox)
        PT += newtextbox.Height + 10 '各 newtextbox上下间隔10-------PL不变是希望左对齐
    Next
End Sub

End Class
可是调试之后，在textbox里面写数字，却不见新得文本框出现呢？？