多页PrintDocument中的不同方向

using System.Drawing.Printing;
using System.Windows.Forms;

namespace MultiPagePrintDocument
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void PrintDocument()
        {
            PrintDocument printDocument = new PrintDocument();
            printDocument.PrintPage += PrintPage;
            printDocument.Print();
        }

        private void PrintPage(object sender, PrintPageEventArgs e)
        {
            // 在此处绘制页面内容
            // 示例：在页面中心绘制文本
            string text = "这是一个示例文本";
            Font font = new Font("Arial", 24);
            int textWidth = (int)e.Graphics.MeasureString(text, font).Width;
            int textHeight = (int)e.Graphics.MeasureString(text, font).Height;
            int x = (e.PageBounds.Width - textWidth) / 2;
            int y = (e.PageBounds.Height - textHeight) / 2;
            e.Graphics.DrawString(text, font, Brushes.Black, x, y);

            // 根据需要更改 PageSettings 的 Landscape 属性
            if (/* 判断是否需要横向打印 */)
            {
                printDocument.DefaultPageSettings.Landscape = true;
            }
            else
            {
                printDocument.DefaultPageSettings.Landscape = false;
            }
        }
    }
}