Public Class Form1
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles MyBase.Load
        Process.Start("cmd.exe")
    End Sub
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles Button1.Click
        Dim p() As Process = Process.GetProcessesByName("cmd")
        Stop
        p(0).Kill()
    End Sub
End Class