PDF/WORD/EXCEL 图片预览

一、PDF/WORD/EXCEL 转 XPS 转 第一页内容 转 图片

  • WORD、EXCEL转XPS (Office2010)
 public bool WordToXPS(string sourcePath, string targetPath)
{
bool result = false;
Microsoft.Office.Interop.Word.WdExportFormat exportFormat = Microsoft.Office.Interop.Word.WdExportFormat.wdExportFormatXPS;
Microsoft.Office.Interop.Word.ApplicationClass application = null; Microsoft.Office.Interop.Word.Document document = null;
try
{
application = new Microsoft.Office.Interop.Word.ApplicationClass();
application.Visible = false;
document = application.Documents.Open(sourcePath);
document.SaveAs2();
document.ExportAsFixedFormat(targetPath, exportFormat);
result = true;
}
catch (Exception e)
{
Console.WriteLine(e.Message);
result = false;
}
finally
{
if (document != null)
{
document.Close();
document = null;
}
if (application != null)
{
application.Quit();
application = null;
}
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
}
return result;
}
  • PDF转XPS (将机器上默认打印机设置为Microsoft XPS Document Writer)
        //Win32 Api定义
[DllImport("user32.dll")]
static extern IntPtr FindWindow(string lpClassName, string lpWindowName); [DllImport("user32.dll")]
static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfeter, string lpszClass, string lpszWindow); [DllImport("user32.dll")]
static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, String lParam); [DllImport("user32.dll")]
static extern bool PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam); //Win32消息定义
const uint WM_SETTEXT = 0x000c;
const uint WM_IME_KEYDOWN = 0x0290;
const uint WM_LBUTTONDOWN = 0x0201;
const uint WM_LBUTTONUP = 0x0202; private void button3_Click(object sender, EventArgs e)
{
string pdf_filepath = @"d:\原文件.pdf"; // 需要转换的PDF文件
string xps_filepath = @"d:\目标文件.xps"; // 目标XPS文件 System.Diagnostics.Process p = new System.Diagnostics.Process();
//不现实调用程序窗口,但是对于某些应用无效
p.StartInfo.CreateNoWindow = true;
p.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden; //采用操作系统自动识别的模式
p.StartInfo.UseShellExecute = true; //要打印的文件路径,可以是WORD,EXCEL,PDF,TXT等等
p.StartInfo.FileName = pdf_filepath;
//p.StartInfo.FileName = @"C:\Documents and Settings\Administrator\桌面\MouseWithoutBorders\2.bmp"; //指定执行的动作,是打印,即print,打开是 open
p.StartInfo.Verb = "print"; //开始
p.Start(); System.Threading.Thread.Sleep( * ); IntPtr hWnd = FindWindow("#32770", "文件另存为");
IntPtr hChild;
// 由于输入框被多个控件嵌套,因此需要一级一级的往控件内找到输入框
hChild = FindWindowEx(hWnd, IntPtr.Zero, "DUIViewWndClassName", String.Empty);
hChild = FindWindowEx(hChild, IntPtr.Zero, "DirectUIHWND", String.Empty);
hChild = FindWindowEx(hChild, IntPtr.Zero, "FloatNotifySink", String.Empty);
hChild = FindWindowEx(hChild, IntPtr.Zero, "ComboBox", String.Empty);
hChild = FindWindowEx(hChild, IntPtr.Zero, "Edit", String.Empty); // File name edit control
// 向输入框发送消息,填充目标xps文件名
SendMessage(hChild, WM_SETTEXT, IntPtr.Zero, xps_filepath);
// 等待1秒钟
System.Threading.Thread.Sleep();
// 找到对话框内的保存按钮
hChild = IntPtr.Zero;
hChild = FindWindowEx(hWnd, IntPtr.Zero, "Button", "保存(&S)");
// 向保存按钮发送2个消息,以模拟click消息,借此来按下保存按钮
PostMessage(hChild, WM_LBUTTONDOWN, IntPtr.Zero, IntPtr.Zero);
PostMessage(hChild, WM_LBUTTONUP, IntPtr.Zero, IntPtr.Zero); /***** 跟踪打印机队列中的文件打印状况,知道文件打印完成为止 *****/
// 调用本地打印机队列
System.Printing.LocalPrintServer prtSrv = new System.Printing.LocalPrintServer();
System.Printing.PrintQueue queue = prtSrv.GetPrintQueue("Microsoft XPS Document Writer"); //一直监视打印队列,知道打印队列中没有打印任务时结束
do
{
// 等待处理
System.Threading.Thread.Sleep();
// 读取队列的最新信息
queue.Refresh();
} while (queue.NumberOfJobs > ); MessageBox.Show("完成");
}
  • XPS转图片
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Xps.Packaging;
using Microsoft.Win32;
using System.Drawing.Imaging;
using System.Drawing;
using System.IO; namespace Xps_Reader
{
/// <summary>
/// Interaction logic for Window1.xaml
/// </summary>
public partial class Window1 : Window
{
BitmapEncoder bitmapEncoder = null;
MemoryStream memoryStream = new MemoryStream();
public Window1()
{
InitializeComponent(); AddCMD(ApplicationCommands.Open, MenuItem_Checked);
AddCMD(ApplicationCommands.Close, exitMenu_Checked);
AddCMD(ApplicationCommands.Save, saveMenu_Checked);
}
private XpsDocument xpsDocument; //绑定菜单命令
private void AddCMD(ICommand cmd,ExecutedRoutedEventHandler e) { var cb = new CommandBinding(cmd);
cb.Executed += new ExecutedRoutedEventHandler(e);
CommandBindings.Add(cb);
} public MemoryStream OutputStream
{
get;
private set;
}
//打开xps文件
private void MenuItem_Checked(object sender, ExecutedRoutedEventArgs e)
{ OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "xps|*.xps";
//dlg.Filter = "jpg|*.jpg";
if (dlg.ShowDialog() == true) {
try
{
if (xpsDocument != null) xpsDocument.Close(); xpsDocument = new XpsDocument(dlg.FileName, System.IO.FileAccess.Read);
FixedDocumentSequence documentPageSequence = xpsDocument.GetFixedDocumentSequence();
documentPageView1.Document = documentPageSequence;
bitmapEncoder = new JpegBitmapEncoder();
//for (int i = 0; i < documentPageSequence.DocumentPaginator.PageCount;i++ )
//{
// DocumentPage documentPage = documentPageSequence.DocumentPaginator.GetPage(i);
// RenderTargetBitmap targetBitmap = new RenderTargetBitmap((int)documentPage.Size.Width, (int)documentPage.Size.Height, 96.0, 96.0, PixelFormats.Pbgra32);
// targetBitmap.Render(documentPage.Visual);
// bitmapEncoder.Frames.Add(BitmapFrame.Create(targetBitmap));
//}
////bitmapEncoder.Save(memoryStream); DocumentPage documentPage = documentPageSequence.DocumentPaginator.GetPage();
RenderTargetBitmap targetBitmap = new RenderTargetBitmap((int)documentPage.Size.Width, (int)documentPage.Size.Height, 96.0, 96.0, PixelFormats.Pbgra32);
targetBitmap.Render(documentPage.Visual);
bitmapEncoder.Frames.Add(BitmapFrame.Create(targetBitmap)); xpsDocument.Close();
}
catch(Exception ex)
{
throw (ex);
} }
} private void exitMenu_Checked(object sender, ExecutedRoutedEventArgs e)
{
this.Close();
}
private void saveMenu_Checked(object sender, ExecutedRoutedEventArgs e)
{
//创建一个保存对话框对象
SaveFileDialog sfd = new SaveFileDialog();
//XpsImage image = new XpsImage(); string a; //设置对话框的各项属性
sfd.Title = "转化为";
sfd.OverwritePrompt = true;
sfd.CheckPathExists = true;
sfd.Filter = "gif|*.gif"; if (sfd.ShowDialog() == true)
{
string strFileName = sfd.FileName;
bitmapEncoder.Save(memoryStream); Bitmap bitMap = new Bitmap(memoryStream);
bitMap.Save(strFileName); //this.OutputStream = memoryStream;
//bitmap.Save(strFileName, ImageFormat.Jpeg);
//this.Text = "Image Converter: " + strFileName; }
} private void MenuItem_Click(object sender, RoutedEventArgs e)
{ }
}
}

二、WORD/EXCEL 转PDF 转 第一页内容 转 图片

  • WORD/EXCEL 转 PDF (Office2010)
        /// <summary>
/// 把Word文件转换成为PDF格式文件
/// </summary>
/// <param name="sourcePath">源文件路径</param>
/// <param name="targetPath">目标文件路径</param>
/// <returns>true=转换成功</returns>
public bool WordToPDF(string sourcePath, string targetPath)
{
bool result = false;
Microsoft.Office.Interop.Word.WdExportFormat exportFormat = Microsoft.Office.Interop.Word.WdExportFormat.wdExportFormatXPS;
Microsoft.Office.Interop.Word.ApplicationClass application = null; Microsoft.Office.Interop.Word.Document document = null;
try
{
application = new Microsoft.Office.Interop.Word.ApplicationClass();
application.Visible = false;
document = application.Documents.Open(sourcePath);
document.SaveAs2();
document.ExportAsFixedFormat(targetPath, exportFormat);
result = true;
}
catch (Exception e)
{
Console.WriteLine(e.Message);
result = false;
}
finally
{
if (document != null)
{
document.Close();
document = null;
}
if (application != null)
{
application.Quit();
application = null;
}
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
}
return result;
}
  • PDF 转 图片 (Adobe Acrobat 9 Pro)
public static void ConvertPdf2Image(string pdfFilePath, string imageDirectoryPath,
int beginPageNum, int endPageNum, ImageFormat format, double zoom = )
{
Acrobat.CAcroPDDoc pdfDoc = null;
Acrobat.CAcroPDPage pdfPage = null;
Acrobat.CAcroRect pdfRect = null;
Acrobat.CAcroPoint pdfPoint = null; //生成操作Pdf文件的Com对象 pdfDoc = (Acrobat.CAcroPDDoc)Microsoft.VisualBasic.Interaction.CreateObject("AcroExch.PDDoc", ""); //检查输入参数
if (!pdfDoc.Open(pdfFilePath))
{
throw new FileNotFoundException(string.Format("源文件{0}不存在!", pdfFilePath));
} if (!Directory.Exists(imageDirectoryPath))
{
Directory.CreateDirectory(imageDirectoryPath);
} if (beginPageNum <= )
{
beginPageNum = ;
} if (endPageNum > pdfDoc.GetNumPages() || endPageNum <= )
{
endPageNum = pdfDoc.GetNumPages();
} if (beginPageNum > endPageNum)
{
throw new ArgumentException("参数\"beginPageNum\"必须小于\"endPageNum\"!");
} if (format == null)
{
format = ImageFormat.Png;
} if (zoom <= )
{
zoom = ;
} //转换
for (int i = beginPageNum; i <= endPageNum; i++)
{
//取出当前页
pdfPage = (Acrobat.CAcroPDPage)pdfDoc.AcquirePage(i - );
//得到当前页的大小
pdfPoint = (Acrobat.CAcroPoint)pdfPage.GetSize();
//生成一个页的裁剪区矩形对象
pdfRect = (Acrobat.CAcroRect)Microsoft.VisualBasic.Interaction.CreateObject("AcroExch.Rect", ""); //计算当前页经缩放后的实际宽度和高度,zoom==1时,保持原比例大小
int imgWidth = (int)((double)pdfPoint.x * zoom);
int imgHeight = (int)((double)pdfPoint.y * zoom); //设置裁剪矩形的大小为当前页的大小
pdfRect.Left = ;
pdfRect.right = (short)imgWidth;
pdfRect.Top = ;
pdfRect.bottom = (short)imgHeight; //将当前页的裁剪区的内容编成图片后复制到剪贴板中
pdfPage.CopyToClipboard(pdfRect, , , (short)( * zoom)); IDataObject clipboardData = Clipboard.GetDataObject(); //检查剪贴板中的对象是否是图片,如果是图片则将其保存为指定格式的图片文件
if (clipboardData.GetDataPresent(DataFormats.Bitmap))
{
Bitmap pdfBitmap = (Bitmap)clipboardData.GetData(DataFormats.Bitmap); pdfBitmap.Save(
Path.Combine(imageDirectoryPath, i.ToString("") + "." + format.ToString()), format); pdfBitmap.Dispose();
}
} //关闭和释放相关COM对象
pdfDoc.Close();
Marshal.ReleaseComObject(pdfRect);
Marshal.ReleaseComObject(pdfPoint);
Marshal.ReleaseComObject(pdfPage);
Marshal.ReleaseComObject(pdfDoc); }

三、第三方组件

其他参考:

C#实现MS-Office文档转Pdf(Word、Execel、PowerPoint、Visio、Project)

用C#实现Word,PPT,EXECL 图片输出

上一篇:C#委托和事件讲解


下一篇:《RedHatLinux系统修复视频(通过本地镜像)》