最近有个项目需要把文件(word、excel、txt、image等)转换为pdf文件，搜了一下资料，有很多实现方式，如通过调用虚拟打印机来转换，利用第三方组件(itextsharp、sharppdf等)实现。现两个都用到了，html转换为pdf文件时，我是先把html截取为图片然后转换为pdf，若各位有好的建议，可以一起探讨。
Pdf文件转Excel等文件各位有啥好的实现方法？
先贴上一些源码，下载地址：http://download.csdn.net/source/2646952
- C# code
/// <summary> /// excel转换为pdf /// </summary> /// <param name="file_inputname"></param> public void PrintSheetToPDF(string fileInputName) { try { GetPrinterName(ref PrinterName, ref obj_printer_settings, ref oType); PrintDocument prtdoc = new PrintDocument(); currentPrinterName = prtdoc.PrinterSettings.PrinterName; //获取默认的打印机名 //更改默认打印机 SetDefaultPrinter(PrinterName.Trim()); //通知更改 SendNotifyMessage(HWND_BROADCAST, WM_WININICHANGE, 0, "windows"); if (fileInputName == "") { return; } filePath = fileSavePath + "\\" + GetFileName(fileInputName) + ".pdf"; oType.InvokeMember("Init", System.Reflection.BindingFlags.InvokeMethod, null, obj_printer_settings, null); oType.InvokeMember("SetValue", System.Reflection.BindingFlags.InvokeMethod, null, obj_printer_settings, new object[] { "output", filePath }); oType.InvokeMember("SetValue", System.Reflection.BindingFlags.InvokeMethod, null, obj_printer_settings, new object[] { "showsettings", "never" }); oType.InvokeMember("SetValue", System.Reflection.BindingFlags.InvokeMethod, null, obj_printer_settings, new object[] { "ShowPDF", "no" }); oType.InvokeMember("SetValue", System.Reflection.BindingFlags.InvokeMethod, null, obj_printer_settings, new object[] { "ShowProgress", "no" }); oType.InvokeMember("SetValue", System.Reflection.BindingFlags.InvokeMethod, null, obj_printer_settings, new object[] { "ShowProgressFinished", "no" }); oType.InvokeMember("SetValue", System.Reflection.BindingFlags.InvokeMethod, null, obj_printer_settings, new object[] { "SuppressErrors", "yes" }); oType.InvokeMember("SetValue", System.Reflection.BindingFlags.InvokeMethod, null, obj_printer_settings, new object[] { "ConfirmOverwrite", "no" }); oType.InvokeMember("WriteSettings", System.Reflection.BindingFlags.InvokeMethod, null, obj_printer_settings, new object[] { true }); if (File.Exists(filePath) == true) { File.Delete(filePath); } object objMissing = System.Type.Missing; object objValue = true; Microsoft.Office.Interop.Excel.Application objExcel = new Microsoft.Office.Interop.Excel.Application(); Microsoft.Office.Interop.Excel.Workbook objWorkbook = objExcel.Workbooks.Open(fileSavePath+"\\"+fileInputName, objMissing, objValue, objMissing, objMissing,objMissing, objMissing, objMissing, objMissing, objMissing, objMissing, objMissing, objMissing, objMissing, objMissing); objExcel.Visible = false; for (int i = 1; i < objWorkbook.Worksheets.Count; i++) { _Worksheet active_workbook = (_Worksheet)objExcel.Worksheets.get_Item(i); active_workbook.PageSetup.Zoom = false; active_workbook.PageSetup.FitToPagesWide = 1; active_workbook.PageSetup.FitToPagesTall = 10; } objExcel.ActiveWorkbook.PrintOut(objMissing, objMissing, objMissing, objMissing, objMissing, objMissing, objMissing, objMissing); for (int f_intStep = 1; f_intStep < 20000; f_intStep++) { System.Threading.Thread.Sleep(100); if (File.Exists(filePath) == true) { break; } } objWorkbook.Close(false, fileInputName, false); objExcel.Quit(); objWorkbook = null; objExcel = null; int k = 0; IntPtr t = new IntPtr(objExcel.Hwnd); GetWindowThreadProcessId(t, out k); System.Diagnostics.Process p = System.Diagnostics.Process.GetProcessById(k); p.Kill(); obj_printer_settings = null; //更改默认打印机 SetDefaultPrinter(currentPrinterName.Trim()); //通知更改 SendNotifyMessage(HWND_BROADCAST, WM_WININICHANGE, 0, "windows"); } catch (Exception e) { obj_printer_settings = null; //throw e; } }