private void B_ImportPNG_Click(object sender, EventArgs e) { OpenFileDialog ofd = new OpenFileDialog { Filter = "PNG File|*.png", FileName = "Background.png", }; if (ofd.ShowDialog() != DialogResult.OK) { return; } Bitmap img = (Bitmap)Image.FromFile(ofd.FileName); try { bg.SetImage(img); PB_Background.Image = bg.GetImage(); } catch (Exception ex) { WinFormsUtil.Error(ex.Message); } }