using System; using System.Drawing; using System.IO; using System.Windows.Forms; class ImageOpen: Form { protected string strProgName; protected string strFileName; protected Image image; public static void Main() { Application.Run(new ImageOpen()); } public ImageOpen() { ResizeRedraw = true; Menu = new MainMenu(); Menu.MenuItems.Add("&File"); Menu.MenuItems[0].MenuItems.Add(new MenuItem("&Open...", new EventHandler(MenuFileOpenOnClick), Shortcut.CtrlO)); } void MenuFileOpenOnClick(object obj, EventArgs ea) { OpenFileDialog dlg = new OpenFileDialog(); dlg.Filter = "All Image Files|*.bmp;*.ico;*.gif;*.jpeg;*.jpg;" + "*.jfif;*.png;*.tif;*.tiff;*.wmf;*.emf|" + "Windows Bitmap (*.bmp)|*.bmp|" + "Windows Icon (*.ico)|*.ico|" + "Graphics Interchange Format (*.gif)|*.gif|" + "JPEG File Interchange Format (*.jpg)|" + "*.jpg;*.jpeg;*.jfif|" + "Portable Network Graphics (*.png)|*.png|" + "Tag Image File Format (*.tif)|*.tif;*.tiff|" + "Windows Metafile (*.wmf)|*.wmf|" + "Enhanced Metafile (*.emf)|*.emf|" + "All Files (*.*)|*.*"; if (dlg.ShowDialog() == DialogResult.OK) { try { image = Image.FromFile(dlg.FileName); } catch (Exception exc) { Console.WriteLine(exc.Message); return; } strFileName = dlg.FileName; Text = Path.GetFileName(strFileName); Invalidate(); } } protected override void OnPaint(PaintEventArgs pea) { Graphics grfx = pea.Graphics; if (image != null) grfx.DrawImage(image, 0, 0); } }