Public Shared minLen As Double = 1000.0
Public Shared maxLen As Double = 5000.0
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim random As New Random(DateTime.Now.Millisecond)
Dim randInt As Integer = random.[Next](0, 100)
Dim Len = minLen + (maxLen - minLen) * randInt / 100
MsgBox(Len)
End Sub
End Class
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