.

Process.Start(proc)
Private Sub BtnKill_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnKill.Click
Dim proc As String
proc = ComboBox1.Text
Process.Start(proc)
ComboBox1.Items.Clear()
For Each p As Process In Process.GetProcesses
ComboBox1.Items.Add(p.ProcessName.ToLower)
Next
ComboBox1.Sorted = True
End Sub

proc = combobox1.text
Dim proc As String
proc = Combobox1.text + ".exe"
Process.Start(proc)
Combobox1.Items.Clear()
For Each p As Process In Process.GetProcesses
Combobox1.Items.Add(p.ProcessName.ToLower)
Next