Converting Word Documents to PDF Programmatically
Question:
Is there a cost-effective or free programmatic approach to converting Word (.doc) files to PDFs using C# or VB.NET?
Answer:
Option 1: Utilizing foreach Loop
Implement a foreach loop instead of a for loop to address the issue:
int j = 0; foreach (Microsoft.Office.Interop.Word.Page p in pane.Pages) { var bits = p.EnhMetaFileBits; var target = path1 +j.ToString()+ "_image.doc"; try { using (var ms = new MemoryStream((byte[])(bits))) { var image = System.Drawing.Image.FromStream(ms); var pngTarget = Path.ChangeExtension(target, "png"); image.Save(pngTarget, System.Drawing.Imaging.ImageFormat.Png); } } catch (System.Exception ex) { MessageBox.Show(ex.Message); } j++; }
Option 2: Utilize Word 2007 with Save As PDF Add-in
Employ the following code utilizing Word 2007 and the Save As PDF add-in:
// Create a new Microsoft Word application object Microsoft.Office.Interop.Word.Application word = new Microsoft.Office.Interop.Word.Application(); // C# doesn't have optional arguments so we'll need a dummy value object oMissing = System.Reflection.Missing.Value; // Get list of Word files in specified directory DirectoryInfo dirInfo = new DirectoryInfo(@"\server\folder"); FileInfo[] wordFiles = dirInfo.GetFiles("*.doc"); word.Visible = false; word.ScreenUpdating = false; foreach (FileInfo wordFile in wordFiles) { // Cast as Object for word Open method Object filename = (Object)wordFile.FullName; // Use the dummy value as a placeholder for optional arguments Document doc = word.Documents.Open(ref filename, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing); doc.Activate(); object outputFileName = wordFile.FullName.Replace(".doc", ".pdf"); object fileFormat = WdSaveFormat.wdFormatPDF; // Save document into PDF Format doc.SaveAs(ref outputFileName, ref fileFormat, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing); // Close the Word document, but leave the Word application open. // doc has to be cast to type _Document so that it will find the // correct Close method. object saveChanges = WdSaveOptions.wdDoNotSaveChanges; ((_Document)doc).Close(ref saveChanges, ref oMissing, ref oMissing); doc = null; } // word has to be cast to type _Application so that it will find // the correct Quit method. ((_Application)word).Quit(ref oMissing, ref oMissing, ref oMissing); word = null;
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