--- title: "pdf till jpg" type: "forum-thread" url: "https://www.webforum.nu/amne/dotnet/137594-pdf-till-jpg" topic: ".NET" topic_url: "https://www.webforum.nu/amne/dotnet" author: "lucgo446" published: "2005-11-14T15:43:05.000Z" updated: "2005-11-15T21:24:09.000Z" replies: 5 views: 573 page: 1 pages: 1 language: "sv-SE" site: "webForum — webforum.nu" rights: "Upphovsrätten till varje inlägg tillhör dess författare." attribution: "Citera som: webForum, https://www.webforum.nu/amne/dotnet/137594-pdf-till-jpg" --- # pdf till jpg ## #1 — lucgo446, 2005-11-14T15:43Z heloooo, jag vill konvertera ett pdf doc till jpg bilder(varge sida en bild) med asp.net 2.0 Nån som gjort det? funkar det bra? fort? kodsnutt? Permalänk: https://www.webforum.nu/p/137594 ## #2 — Mc Fetto, 2005-11-15T10:30Z Ta en titt på ghostscript! Permalänk: https://www.webforum.nu/p/1710617 ## #3 — lucgo446, 2005-11-15T15:01Z Det verkar inte finnas mkt på kombinationen GS och .net... suck... **MEN** Jag har hittat en kodsnutt som funkar på winform. behöver BARA hitta vad motsvarigheten till Clipboard är i asp.net... nån som vet? OBS du måste ha Interop.Acrobat.dll i bin mappen ladda ner lösningen här: ``` using System; using System.IO; using System.Drawing; using System.Configuration; using System.Runtime.InteropServices; using System.Runtime.InteropServices.ComTypes; public partial class Default2 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { // Acrobat objects Acrobat.CAcroPDDoc pdfDoc; Acrobat.CAcroPDPage pdfPage; Acrobat.CAcroRect pdfRect; Acrobat.CAcroPoint pdfPoint; AppSettingsReader appSettings = new AppSettingsReader(); string pdfInputPath = appSettings.GetValue("pdfInputPath", typeof(string)).ToString(); string pngOutputPath = appSettings.GetValue("pngOutputPath", typeof(string)).ToString(); string templatePortraitFile = pdfInputPath + @"\pdftemplate_portrait.gif"; string templateLandscapeFile = pdfInputPath + @"\pdftemplate_portrait.gif"; ; try { // Get list of files to process from the input path // Could change to read list from database instead string[] files = Directory.GetFiles(pdfInputPath, "*.pdf"); for (int n = 0; n < files.Length; n++) { string inputFile = files[n].ToString(); string outputFile = pngOutputPath + files[n].Substring(files[n].LastIndexOf(@"\") + 1).Replace(".pdf", ".png"); /* Could skip if thumbnail already exists in output path FileInfo fi = new FileInfo(inputFile); if (!fi.Exists) {} */ // Create the document (Can only create the AcroExch.PDDoc object using late-binding) // Note using VisualBasic helper functions, have to add reference to DLL in // C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\Microsoft.VisualBasic.dll // Will always be available as .NET framework ships with all" pdfDoc = (Acrobat.CAcroPDDoc)Microsoft.VisualBasic.Interaction.CreateObject("AcroExch.PDDoc", ""); int ret = pdfDoc.Open(inputFile); if (ret == 0) { throw new FileNotFoundException(); } // Get the number of pages (to be used later if you wanted to store that information) int pageCount = pdfDoc.GetNumPages(); // Get the first page pdfPage = (Acrobat.CAcroPDPage)pdfDoc.AcquirePage(0); pdfPoint = (Acrobat.CAcroPoint)pdfPage.GetSize(); pdfRect = (Acrobat.CAcroRect)Microsoft.VisualBasic.Interaction.CreateObject("AcroExch.Rect", ""); pdfRect.Left = 0; pdfRect.right = pdfPoint.x; pdfRect.Top = 0; pdfRect.bottom = pdfPoint.y; // Render to clipboard, scaled by 100 percent (ie. original size) // Even though we want a smaller image, better for us to scale in .NET // than Acrobat as it would greek out small text // see http://www.adobe.com/support/techdocs/1dd72.htm [B]pdfPage.CopyToClipboard(pdfRect, 0, 0, 100); IDataObject clipboardData = Clipboard.GetDataObject();[/B] if (clipboardData.GetDataPresent(DataFormats.Bitmap)) { Bitmap pdfBitmap = (Bitmap)clipboardData.GetData(DataFormats.Bitmap); // Size of generated thumbnail in pixels int thumbnailWidth = 45; int thumbnailHeight = 59; string templateFile; // Switch between portrait and landscape if (pdfPoint.x < pdfPoint.y) { templateFile = templatePortraitFile; } else { templateFile = templateLandscapeFile; // Swap width and height (little trick not using third temp variable) thumbnailWidth = thumbnailWidth ^ thumbnailHeight; thumbnailHeight = thumbnailWidth ^ thumbnailHeight; thumbnailWidth = thumbnailWidth ^ thumbnailHeight; } // Load the template graphic Bitmap templateBitmap = new Bitmap(templateFile); // Render to small image using the bitmap class Image pdfImage = pdfBitmap.GetThumbnailImage(thumbnailWidth, thumbnailHeight, null, IntPtr.Zero); // Create new blank bitmap (+ 7 for template border) Bitmap thumbnailBitmap = new Bitmap(thumbnailWidth + 7, thumbnailHeight + 7, System.Drawing.Imaging.PixelFormat.Format32bppArgb); // To overlayout the template with the image, we need to set the transparency // http://www.sellsbrothers.com/writing/default.aspx?content=dotnetimagerecoloring.htm templateBitmap.MakeTransparent(); using (Graphics thumbnailGraphics = Graphics.FromImage(thumbnailBitmap)) { // Draw rendered pdf image to new blank bitmap thumbnailGraphics.DrawImage(pdfImage, 2, 2, thumbnailWidth, thumbnailHeight); // Draw template outline over the bitmap (pdf with show through the transparent area) thumbnailGraphics.DrawImage(templateBitmap, 0, 0); // Save as .png file thumbnailBitmap.Save(outputFile, System.Drawing.Imaging.ImageFormat.Png); Console.WriteLine("Generated thumbnail... {0}", outputFile); } pdfDoc.Close(); // Not sure how why it is to do this, but Acrobat is not the best behaved COM object // see http://blogs.msdn.com/yvesdolc/archive/2004/04/17/115379.aspx Marshal.ReleaseComObject(pdfPage); Marshal.ReleaseComObject(pdfRect); Marshal.ReleaseComObject(pdfDoc); } } } catch (System.Exception ex) { Console.Write(ex.ToString()); } } } ``` Permalänk: https://www.webforum.nu/p/1710742 ## #4 — Mc Fetto, 2005-11-15T18:01Z > **lucgo446 skrev:** > > Det verkar inte finnas mkt på kombinationen GS och .net... suck... Nej det som finnes är ett rätt bra program som du med olika parametrar kan göra olika saker. T ex skapa pdf av bilder eller tvärtom. Detta program kan du med lätthet anropa från .NET Permalänk: https://www.webforum.nu/p/1710817 ## #5 — lucgo446, 2005-11-15T18:05Z Hej Mc F Det braiga programmet är GS menar du? då ska jag kolla upp syntax och hur man anropar det.... Det är lite pyssel med det, nån annan lösning? nån? Permalänk: https://www.webforum.nu/p/1710821 ## #6 — emission, 2005-11-15T21:24Z Det finns många .NET-komponenter för ändamålet. En som är gratis och ruggigt bra är Om du vill generera med "mer kontroll" så får du välja en annan komponent eller köra med ImageMagick + GhostScript, startat mha System.Diagnostics.Process Permalänk: https://www.webforum.nu/p/1711032 --- Tråden på webben: https://www.webforum.nu/amne/dotnet/137594-pdf-till-jpg