Getting text from richtextbox and Timer to detect changes

//https://stackoverflow.com/questions/24928472/getting-text-from-richtextbox-and-timer-to-detect-changes

 private void Form1_Load(object sender, EventArgs e)
    {
        timer1.Enabled = true;
    }
                private void running_process()
    {
            Process[] processes = Process.GetProcesses("ITWORKSPC152");
            for (int i = 0; i < listView1.Items.Count; i++)
            {
                if (flag == false)
                {
                    listView1.Items[i].SubItems.Add("Inactive");
                    if(i == listView1.Items.Count - 1)
                        flag = true;
                }
                foreach (Process p in processes)
                {
                    if (!listBox1.Items.Contains(listView1.Items[i].Text))
                    {
                        listView1.Items[i].SubItems[1].Text = " ";
                        listView1.Items[i].SubItems[1].Text = "Inactive";
                        listView1.Items[i].BackColor = Color.Red;
                    }

                    if (listView1.Items[i].Text == p.ProcessName)
                    {
                        listBox1.Items.Add(p.ProcessName);
                        listView1.Items[i].SubItems[1].Text = "Inactive";
                        for (int j = 0; j < listBox1.Items.Count; j++)
                        {
                            if (listBox1.Items[j].ToString() == listView1.Items[i].Text)
                            {
                                listView1.Items[i].SubItems[1].Text = "Active";
                                listView1.Items[i].BackColor = Color.FromArgb(66, 181, 33);
                                //m_boolIsDown = false;
                            }

                        }
                    }
                 }
                if (listView1.Items[i].SubItems[1].Text == "Inactive")
                {
                    richTextBox1.Text = richTextBox1.Text + listView1.Items[i].Text + " was inactive at " + DateTime.Now.ToString("hh':'mm tt") + "\n";
                    File.AppendAllText(@"C:\Documents and Settings\pamojica\My Documents\InactiveProgramLogs\DASHBOARD.txt", richTextBox1.Text);
                }
            }
      }
    private void timer1_Tick(object sender, EventArgs e)
    {
        listBox1.Items.Clear();
        richTextBox1.Clear();
        running_process();
    }