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 Public Class Form1

 
    ' Dim picArr(10) As String = {WindowsApplication1.My.Resources.Resources.Koala, WindowsApplication1.My.Resources.Resources.Jellyfish}
    Dim flag As Integer = 0
 
    Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
 
 
 
        If flag = 0 Then
 
            PictureBox1.ImageLocation = "c:\1.jpg"
            PictureBox2.ImageLocation = "c:\2.jpg"
            flag = flag + 1
        Else
 
            PictureBox1.ImageLocation = "c:\2.jpg"
            PictureBox2.ImageLocation = "c:\1.jpg"
            flag = 0
        End If
 
 
 
    End Sub
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Timer1.Stop()
 
 
 
    End Sub
End Class