

Here I give you the source code to make a shuffle number like image above(random numpad).
IDE: Microsoft Visual Studio
Programming Language: VB.NET
First, you open your visual studio and create new project. Then, put 9 Buttons into your form and type this code below to your vb file project.
Public Class RandomNumpad
Private Sub RandomNumpad_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim temp, index As String
Dim Buttons() As Control = {Button1, Button2, Button3, Button4, Button5, Button6, Button7, Button8, Button9}
Dim Rand As New Random
For i As Integer = 0 To 8
index = Rand.Next(1, 9)
temp = Buttons(i).Text
Buttons(i).Text = Buttons(index).Text
Buttons(index).Text = temp
Next
End Sub
End Class