c#使用GDI+简单绘图(二)

        // Create the in-memory bitmap where you will draw the image.        // This bitmap is 300 pixels wide and 50 pixels high.        Bitmap image = new Bitmap(300, 50);        // get the graphics context        Graphics g = Graphics.FromImage(image);        // Draw a solid white rectangle.        // Start from point (1, 1).        // Make it 298 pixels wide and 48 pixels high.        g.FillRectangle(Brushes.White, 1, 1, 298, 48);        // load a font and use it to draw a string        Font font = new Font("Impact", 20, FontStyle.Regular);        g.DrawString("This is a test.", font, Brushes.Blue, 10, 5);        // write the image to the output stream.        image.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif);        // dispose of the context and the bitmap        g.Dispose();        image.Dispose();

        // Create the in-memory bitmap where you will draw the image.        // This bitmap is 450 pixels wide and 100 pixels high.        Bitmap image = new Bitmap(450, 100);        Graphics g = Graphics.FromImage(image);        // Ensure high-quality curves.        g.SmoothingMode = SmoothingMode.AntiAlias;        // Paint the background.        g.FillRectangle(Brushes.White, 0, 0, 450, 100);        // Add an ellipse.        g.FillEllipse(Brushes.PaleGoldenrod, 120, 13, 300, 50);        g.DrawEllipse(Pens.Green, 120, 13, 299, 49);        // Draw some text using a fancy font.        Font font = new Font("Harrington", 20, FontStyle.Bold);        g.DrawString("Oranges are tasty!", font, Brushes.DarkOrange, 150, 20);        // Add a graphic from a file.        System.Drawing.Image orangeImage =          System.Drawing.Image.FromFile(Server.MapPath("oranges.gif"));        g.DrawImageUnscaled(orangeImage, 0, 0);        // Render the image to the output stream.        image.Save(Response.OutputStream,         System.Drawing.Imaging.ImageFormat.Jpeg);        // Clean up.        g.Dispose();        image.Dispose();