private void Txt_CodPro_KeyDown(object sender, KeyEventArgs e)
        {
            switch (e.KeyCode)
            {
            case Keys.Enter:
                e.SuppressKeyPress = true;
                if (Txt_CodPro.Text.Trim() != "")
                {
                    if (FunPR.Existe(Convert.ToInt32(Txt_CodPro.Text)))
                    {
                        if (FunPR.StatudAI(Convert.ToInt32(Txt_CodPro.Text)))
                        {
                            Llenar_Lb_DesPro(Convert.ToInt32(Txt_CodPro.Text));
                            Llenar_Lb_UndUnm(Convert.ToInt32(Txt_CodPro.Text));
                            Llenar_Lb_PrePro(Convert.ToInt32(Txt_CodPro.Text));
                            Util.CambiarTxt(Txt_CodPro, Txt_CanMov);
                            Txt_CanMov.Text = "0";
                            Txt_CanMov.SelectAll();
                        }
                        else
                        {
                            MessageBox.Show("El producto se encuentra inativo.", "Atención", MessageBoxButtons.OK, MessageBoxIcon.Stop);
                            Txt_CodPro.SelectAll();
                        }
                    }
                    else
                    {
                        MessageBox.Show("El producto no extiste.", "Atención", MessageBoxButtons.OK, MessageBoxIcon.Stop);
                        Txt_CodPro.SelectAll();
                    }
                }
                else
                {
                    FormBUSQUEDAS f = new FormBUSQUEDAS();
                    f.ListaProductosAI();
                    f.ShowDialog();
                    if (f._CodPro != "")
                    {
                        Txt_CodPro.Text = f._CodPro;
                        Llenar_Lb_DesPro(Convert.ToInt32(Txt_CodPro.Text));
                        Llenar_Lb_UndUnm(Convert.ToInt32(Txt_CodPro.Text));
                        Llenar_Lb_PrePro(Convert.ToInt32(Txt_CodPro.Text));
                        Util.CambiarTxt(Txt_CodPro, Txt_CanMov);
                        Txt_CanMov.Text = "0";
                        Txt_CanMov.SelectAll();
                    }
                }
                break;

            case Keys.Escape:
                e.SuppressKeyPress = true;
                Util.CambiarTxt(Txt_CodPro, Txt_DotMov);
                MenulistView(false);
                Txt_CodPro.Text = "";
                break;
            }
        }
        private void MenulistViewReset()
        {
            Txt_CodPro.Clear();
            Txt_CodPro.Enabled   = false;
            Txt_CodPro.BackColor = Color.White;

            Txt_CanMov.Clear();
            Txt_CanMov.Enabled   = false;
            Txt_CanMov.BackColor = Color.White;

            Txt_CatMov.Clear();
            Txt_CatMov.Enabled   = false;
            Txt_CatMov.BackColor = Color.White;
        }
        private void AcOpcion()
        {
            FormOPCIONES F = new FormOPCIONES();

            F.Lb_Titulo1.Text = "Opciones";
            F.Lb_Titulo2.Text = "ESC - Salir";
            F.Opc             = new string[] { "Nuevo", "Modificar", "Eliminar" };
            //this.Hide();
            F.ShowDialog();
            this.Show();
            // MessageBox.Show(F.Returno);
            switch (F.Returno)
            {
            case "1":
                Evento2 = "Nuevo";
                MenulistView(true);
                MenulistViewReset();
                Txt_CodPro.Clear();
                Txt_CodPro.Enabled = true;
                Txt_CodPro.Focus();
                Txt_CodPro.SelectAll();
                Txt_CodPro.BackColor = Color.Turquoise;
                break;

            case "2":
                if (listView1.SelectedItems.Count > 0)
                {
                    Evento2 = "Modificar";
                    MenulistView(true);
                    MenulistViewReset();


                    Txt_CodPro.Text = listView1.SelectedItems[0].SubItems[0].Text;
                    Lb_DesPro.Text  = listView1.SelectedItems[0].SubItems[1].Text;
                    Lb_UndUnm.Text  = listView1.SelectedItems[0].SubItems[2].Text;
                    Txt_CanMov.Text = listView1.SelectedItems[0].SubItems[3].Text;
                    Txt_CatMov.Text = listView1.SelectedItems[0].SubItems[4].Text;
                    Lb_CosMov.Text  = listView1.SelectedItems[0].SubItems[5].Text;

                    Txt_CanMov.Enabled = true;
                    Txt_CanMov.Focus();
                    Txt_CanMov.SelectAll();
                    Txt_CanMov.BackColor = Color.Turquoise;
                    SwActivoM            = true;
                }
                break;

            case "3":
                foreach (ListViewItem item in listView1.SelectedItems)
                {
                    listView1.Items.Remove(item);
                }
                if (listView1.Items.Count == 0)
                {
                    Evento2 = "Nuevo";
                    MenulistView(true);
                    MenulistViewReset();

                    Txt_CodPro.Clear();
                    Txt_CodPro.Enabled = true;
                    Txt_CodPro.Focus();
                    Txt_CodPro.SelectAll();
                    Txt_CodPro.BackColor = Color.Turquoise;
                }
                break;

            default:
                //MessageBox.Show("ESCAPE");
                break;
            }
        }