VB.NET 窗体里动态添加几个GroupBox控件然后再GroupBox里动态添加几个PictureBox控件，重定路径有问题

Question

'大师们帮查看是不是缺少什么定义之类的，重点在最后面，PictureBox 重新定义路径有问题，

Dim Grou As New List(Of GroupBox)

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

For i As Integer = 1 To 3 '

Dim b As New GroupBox

With b '设置图片框属性

.Location = New Point((i - 1) * 362 + 12, 12)

.Size = New Point(357, 222)

.Text = "GroupBox" & i

.Name = "GroupBox" & i

End With

Me.Controls.Add(b) '在窗体上添加 控件

Grou.Add(b)

Next

end sub

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

Dim css As Int16

css = 0

For i As Integer = 1 To 6 '循环创建 图片框

Dim b As New PictureBox

With b '设置图片框属性

.Name = "PictureBox " & i

.Text = .Name

.Location = New Point((i - 1) * 51 + 38, 59)

.SizeMode = PictureBoxSizeMode.StretchImage

.Size = New Point(26, 22)

.Image = Image.FromFile(Application.StartupPath & "\1.JPG") '

End With

Me.Grou(css).Controls.Add(b)

Next

end sub

,想把第2个GroupBox里的第3个PictureBox重新定义图片路径，以下程序试过行不通

Me.Grou(0).Controls(8).Image = Image.FromFile(Application.StartupPath & "\3.JPG")
Me.Grou(1).Controls(2).Image = Image.FromFile(Application.StartupPath & "\3.JPG")

Answer 1

        If Grou(0).Controls.Count >= 8 AndAlso Grou(0).Controls(8).GetType.Name.Equals("PictureBox") Then
            Dim PictureBox As PictureBox = TryCast(Grou(0).Controls(8), PictureBox)
            PictureBox.Image = Image.FromFile(Application.StartupPath & "\3.JPG")
        End If