C#中的图像Image类与打印Printing类用法

Image img0 = Image.FromFile(@"C:\1.jpg");
Image img1 = Image.FromStream(File.OpenRead(@"C:\1.jpg"));
Image img2 = new Bitmap(@"C:\1.jpg");

using (Image img = new Bitmap(@"C:\1.jpg"))
{
    System.Drawing.Graphics g = Graphics.FromImage(img);
    g.DrawImage(img, new System.Drawing.Rectangle(0, 0, img.Width, img.Height));
}

Image img1 = new Bitmap(@"C:\1.jpg");
using (Image smallImage = new Bitmap(img1, new Size(img1.Width / 2, img1.Height / 2)))
{
    //...
}

Bitmap myBitmap = new Bitmap("Climber.jpg");
Image myThumbnail = myBitmap.GetThumbnailImage(40, 40, null, IntPtr.Zero);
e.Graphics.DrawImage(myThumbnail, 150, 75);

Image img = Bitmap.FromFile(@"C:\music.bmp");
PictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
PictureBox1.Image = img;
//旋转
img.RotateFlip(RotateFlipType.Rotate180FlipY);
PictureBox1.Image = img;

//创建一个与窗体工作区大小相同的空位图
using (Bitmap image = new Bitmap(ClientRectangle.Width, ClientRectangle.Height))//创建位图实例
{
    Graphics g = Graphics.FromImage(image);//以此图像做画布，画图形
    g.FillRectangle(Brushes.White, ClientRectangle);
    g.DrawImage(image, ClientRectangle);  //在窗体中绘制出内存中的图像
}

img.Save("c:/1.jpg", ImageFormat.Jpeg);
img.Save("c:/1.gif", ImageFormat.Gif);

PrintDocument pd = new PrintDocument();
pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
PrintPreviewDialog ppd = new PrintPreviewDialog();
ppd.Document = pd;
ppd.ShowDialog();

PrintDocument pd = new PrintDocument();
pd.DefaultPageSettings.PrinterSettings.PrinterName = "ZDesigner GX430t";       //打印机名称
pd.DefaultPageSettings.Landscape = true;  //设置横向打印，不设置默认是纵向的
pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
pd.Print();

private string text = string.Empty;
private int top = 0;
private Size textSize = Size.Empty;


private void button1_Click(object sender, EventArgs e)
{
    text = this.textBox1.Text;
    PrintDocument pd = new PrintDocument();
    pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
    pd.BeginPrint += new PrintEventHandler(pd_BeginPrint);

    using (System.windows.Forms.PrintPreviewDialog dlg = new PrintPreviewDialog())
    {
        dlg.Document = pd;
        dlg.WindowState = FormWindowState.Maximized;
        dlg.AllowTransparency = true;
        dlg.AutoScaleMode = AutoScaleMode.Dpi;
        dlg.ShowDialog();
    }
}

private void pd_BeginPrint(object sender, PrintEventArgs e)
{
    textSize = Size.Empty;
    top = 0;
}

private void pd_PrintPage(object sender, PrintPageEventArgs e)
{
    if (textSize == Size.Empty)
    {
        textSize = Size.Round(e.Graphics.MeasureString(text, Font, e.MarginBounds.Width));
    }
    e.Graphics.SetClip(e.MarginBounds);
    e.Graphics.DrawString(text, this.Font, Brushes.Black, new Rectangle(e.MarginBounds.Location.X, e.MarginBounds.Location.Y + top * -1, textSize.Width, textSize.Height)); ;
    if (top + e.MarginBounds.Height < textSize.Height)
    {
        top = top + e.MarginBounds.Height;
        e.HasMorePages = true;
    }
}