private void openToolStripMenuItem_Click(object sender, EventArgs e) { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "TIM2 files|*.tm2"; if (openFileDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK) { LIBKH.ALL.TM2 tm2 = new LIBKH.ALL.TM2(openFileDialog.FileName); panelImage.BackgroundImage = tm2.Image; } }