将Windows窗体转换为pdf文件

Question

我如何将Windows窗体转换为与表单上相同设计的pdf（pdf文档）格式

Answer 1

我测试了这个，它的工作原理。我不喜欢它创建临时文件的事实。

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 
using System.Drawing.Imaging; 
using System.Drawing.Printing; 
using System.IO; 

namespace WindowsFormsApplication4 
{ 
    public partial class Form1 : Form 
    { 
     private System.IO.Stream streamToPrint; 

     string streamType; 

     [System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")] 
     private static extern bool BitBlt 
     (
      IntPtr hdcDest, // handle to destination DC 
      int nXDest, // x-coord of destination upper-left corner 
      int nYDest, // y-coord of destination upper-left corner 
      int nWidth, // width of destination rectangle 
      int nHeight, // height of destination rectangle 
      IntPtr hdcSrc, // handle to source DC 
      int nXSrc, // x-coordinate of source upper-left corner 
      int nYSrc, // y-coordinate of source upper-left corner 
      System.Int32 dwRop // raster operation code 
     ); 


     private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e) 
     { 
      System.Drawing.Image image = System.Drawing.Image.FromStream(this.streamToPrint); 

      int x = e.MarginBounds.X; 
      int y = e.MarginBounds.Y; 

      int width = image.Width; 
      int height = image.Height; 
      if ((width/e.MarginBounds.Width) > (height/e.MarginBounds.Height)) 
      { 
       width = e.MarginBounds.Width; 
       height = image.Height * e.MarginBounds.Width/image.Width; 
      } 
      else 
      { 
       height = e.MarginBounds.Height; 
       width = image.Width * e.MarginBounds.Height/image.Height; 
      } 
      System.Drawing.Rectangle destRect = new System.Drawing.Rectangle(x, y, width, height); 
      e.Graphics.DrawImage(image, destRect, 0, 0, image.Width, image.Height, System.Drawing.GraphicsUnit.Pixel); 
     } 


     private void button1_Click(object sender, EventArgs e) 
     { 
      String filename = System.IO.Path.GetTempFileName(); 

      Graphics g1 = this.CreateGraphics(); 
      Image MyImage = new Bitmap(this.ClientRectangle.Width, this.ClientRectangle.Height, g1); 
      Graphics g2 = Graphics.FromImage(MyImage); 
      IntPtr dc1 = g1.GetHdc(); 
      IntPtr dc2 = g2.GetHdc(); 
      BitBlt(dc2, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height, dc1, 0, 0, 13369376); 
      g1.ReleaseHdc(dc1); 
      g2.ReleaseHdc(dc2); 
      MyImage.Save(filename, ImageFormat.Png); 
      FileStream fileStream = new FileStream(filename, FileMode.Open, FileAccess.Read); 
      StartPrint(fileStream, "Image"); 
      fileStream.Close(); 
      if (System.IO.File.Exists(filename)) 
      { 
       System.IO.File.Delete(filename); 
      } 
     } 

     public void StartPrint(Stream streamToPrint, string streamType) 
     { 

      this.printDocument1.PrintPage += new PrintPageEventHandler(printDocument1_PrintPage); 

      this.streamToPrint = streamToPrint; 

      this.streamType = streamType; 

      System.Windows.Forms.PrintDialog PrintDialog1 = new PrintDialog(); 

      PrintDialog1.AllowSomePages = true; 
      PrintDialog1.ShowHelp = true; 
      PrintDialog1.Document = printDocument1; 
      DialogResult result = PrintDialog1.ShowDialog(); 
      if (result == DialogResult.OK) 
      { 
       printDocument1.Print(); 
      } 
     } 

     public Form1() 
     { 
      InitializeComponent(); 
     } 

    } 

}

Answer 2

看看这个问题（我已经回答），因为你的问题似乎很相似：

How Can i Print Array of Images in Winform App in c#

希望这有助于。

Answer 3

这里可能同样的问题被问过，有这个问题的一些有用的提醒：Save WinForm to PDF & print multipage WinForm