Programacion

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Media;

namespace Timbre_escolar_DTMF_01
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

DateTime hora;
        byte cnt = 0;
        SoundPlayer dtmf;

private void Form1_Load(object sender, EventArgs e)
        {
            hora = DateTime.Now;
            lblHora.Text = hora.ToString("HH:mm:ss");
        }

private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
        {
            DateTime horaTimbre = dateTimePicker1.Value;
        }

private void btnAgregar_Click(object sender, EventArgs e)
        {
            lstActivaciones.Items.Add(dateTimePicker1.Value.ToString("HH:mm:ss"));
        }

private void lstActivaciones_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (lstActivaciones.SelectedIndex != -1)
                btnEliminar.Enabled = true;
            else
                btnEliminar.Enabled = false;
        }

private void btnEliminar_Click(object sender, EventArgs e)
        {
            lstActivaciones.Items.RemoveAt(lstActivaciones.SelectedIndex);
        }

private void btnActivar_Click(object sender, EventArgs e)
        {
            cnt = 1;
        }

private void timer1_Tick(object sender, EventArgs e)
        {
            if (cnt > 0 && cnt <= nudTiempo.Value)
            {
                lblMonitor.Text = "Timbre: ACTIVADO";
                dtmf = new SoundPlayer("DTMF_1.wav");
                if (cnt == 1)
                    dtmf.Play();
                cnt++;
            }
            else
            {
                lblMonitor.Text = "Timbre: Desactivado";
                dtmf = new SoundPlayer("DTMF_D.wav");
                if (cnt == nudTiempo.Value + 1)
                    dtmf.Play();
                cnt = 0;
            }
            hora = DateTime.Now;
            lblHora.Text = hora.ToString("HH:mm:ss");
            if (lstActivaciones.Items.Count > 0)
            {
                int indice = lstActivaciones.FindString(lblHora.Text);
                if (indice != -1)
                    cnt = 1;
            }
        }
    }
}

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