private void buttonAdd_Click(object sender, EventArgs e)
        {
            ConfectionerSet confectionerSet = new ConfectionerSet();

            confectionerSet.FirstName  = textBoxFirstName.Text;
            confectionerSet.MiddleName = textBoxMiddleName.Text;
            confectionerSet.LastName   = textBoxLastName.Text;
            confectionerSet.Phone      = textBoxPhone.Text;
            Program.wftDb.ConfectionerSet.Add(confectionerSet);
            Program.wftDb.SaveChanges();
            ShowConfectioner();
        }
        private void buttonEdit_Click(object sender, EventArgs e)
        {
            if (listViewConfectioner.SelectedItems.Count == 1)
            {
                ConfectionerSet confectionerSet = listViewConfectioner.SelectedItems[0].Tag as ConfectionerSet;

                confectionerSet.FirstName  = textBoxFirstName.Text;
                confectionerSet.MiddleName = textBoxMiddleName.Text;
                confectionerSet.LastName   = textBoxLastName.Text;
                confectionerSet.Phone      = textBoxPhone.Text;
                Program.wftDb.SaveChanges();
                ShowConfectioner();
            }
        }
 private void listViewClient_SelectedIndexChanged(object sender, EventArgs e)
 {
     if (listViewConfectioner.SelectedItems.Count == 1)
     {
         ConfectionerSet confectionerSet = listViewConfectioner.SelectedItems[0].Tag as ConfectionerSet;
         textBoxFirstName.Text  = confectionerSet.FirstName;
         textBoxMiddleName.Text = confectionerSet.MiddleName;
         textBoxLastName.Text   = confectionerSet.LastName;
         textBoxPhone.Text      = confectionerSet.Phone;
     }
     else
     {
         textBoxFirstName.Text  = " ";
         textBoxMiddleName.Text = " ";
         textBoxLastName.Text   = " ";
         textBoxPhone.Text      = " ";
     }
 }
        private void buttonDel_Click(object sender, EventArgs e)
        {
            try
            {
                if (listViewConfectioner.SelectedItems.Count == 1)
                {
                    ConfectionerSet confectionerSet = listViewConfectioner.SelectedItems[0].Tag as ConfectionerSet;
                    Program.wftDb.ConfectionerSet.Remove(confectionerSet);
                    Program.wftDb.SaveChanges();
                    ShowConfectioner();
                }

                textBoxFirstName.Text  = " ";
                textBoxMiddleName.Text = " ";
                textBoxLastName.Text   = " ";
                textBoxPhone.Text      = " ";
            }
            catch
            {
                MessageBox.Show("Невозможно удалить, эту запись используется!", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }