public void button3_Click(object sender, EventArgs e)
 {
     TextureListContent tl = new TextureListContent();
     tl.Pack = packs.packs[0];
     if (tl.createpropertieswindow(packs.packs[0], tv) == System.Windows.Forms.DialogResult.OK)
     {
         packs.packs[0].Attach(tl);
         FormMainPackExplorer.Instance.UpdateData();
     }
     if (sender == null) this.Close();
 }