/// <summary> /// /// </summary> /// <param name="formHijo"></param> private void monocromoToolStripMenuItem_Click_1(object sender, EventArgs e) { try { ImageForm Image1 = (ImageForm)ActiveMdiChild; ImageForm Image2 = new ImageForm(); Image2.Text = "Imagen en monocromo"; Image2.MdiParent = this; Image2.toMonocrom(Image1.getPicture()); Image2.Show(); writePanel(); } catch (NullReferenceException) { MessageBox.Show("No hay ninguna foto seleccionada"); } }