How do I know one application is opening?

Hi everyone
How could my windows service program knows one application is opening or not?. For example if i wanted to know that one person is opening windows media player or any other application in a system where I installed my windows service app. . How can it be done?

PLease help

hi
No is there to help me?
pleaseeeeee..

You can use the Process class to determine what processes are running. I suggest a bit of reading.

try this one.

VB Code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim pro() As Process = Process.GetProcesses
        For Each p As Process In pro
            If p.ProcessName = "calc" Then
                MessageBox.Show("The calculator was running")
            End If
        Next
    End Sub