kill and start program in vb.net

The following VB.NET program allows starting multiple calculator applications and later it kills the same instances of all calculator applications.

The Process component is a useful tool for starting, stopping, controlling, and monitoring applications. A process is a running application and a thread is the basic unit to which the operating system allocates processor time. Using the Process component, you can obtain a list of the processes that are running, or you can start a new process.

GetProcessesByName(String) - Creates an array of new Process components and associates them with all the process resources on the local computer that share the specified process name.

  Dim _proceses As Process()

  _proceses = Process.GetProcessesByName("calc")

The above syntax retrieve all the process associated with "calc" application in the _proceses array. System.Diagnostics provides access to local and remote processes and enables you to start and stop local system processes.

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Public Class Form1

                Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

                                System.Diagnostics.Process.Start("calc")

                End Sub

                Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

                                Dim _proceses As Process()

                                _proceses = Process.GetProcessesByName("calc")

                                For Each proces As Process In _proceses

                                                proces.Kill()

                                Next

                End Sub

End Class