[3booody]

كود :

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       Dim Num As Integer = 1231231
       For i As Integer = 0 To 100
           Application.DoEvents()
           TextBox1.Text &= Num & Format(i, "000") & vbNewLine
       Next
   End Sub