private void notificationToolStripMenuItem1_Click(object sender, EventArgs e)
 {
     if (!(this.ParentForm is ViewNotification))
     {
         this.ParentForm.Hide();
         ViewNotification form = new ViewNotification();
         form.ShowDialog();
         this.ParentForm.Close();
     }
 }
 private void picViewListDiary_Click(object sender, EventArgs e)
 {
     try
     {
         this.Hide();
         ViewNotification newForm = new ViewNotification(adopter);
         newForm.ShowDialog();
         this.Show();
     }
     catch (Exception)
     {
         // ignored
     }
 }