private void addbutton_Click(object sender, EventArgs e)
        {
            MemoryStream ms = new MemoryStream();

            pictureBox.Image.Save(ms, pictureBox.Image.RawFormat);
            byte[]      picturebyte = ms.ToArray();
            Entity.Item item1       = new Entity.Item(postServices.GetCount() + 1, typecombo.Text, locationtext.Text
                                                      , dateTime.Value, descriptiontext.Text, picturebyte);
            postServices.AddPost(item1);

            AddQuestion frm = new AddQuestion();

            frm.IIdtext.Text = item1.getIID().ToString();
            frm.ShowDialog();
            this.Close();
        }
 static void frm_formclosed(object sender, FormClosedEventArgs e)
 {
     frm = null;
 }