how can view multiple pdf in one window form in c#

Seeing as no solution was provided, you can view multi page PDFs within one windows form project via the DocumentViewer class provided by the LEADTOOLS SDK. The Document Viewer will allow you to view all the pages within your PDF and will show you thumbnails of the multiple pages. You can try building on the following code to view this:

private DocumentViewer _documentViewer;
private void Init()
{
// Initialize the user interface
InitUI(); // UI shown in documentation
// Init the cache. This is optional, but it can speed up viewing of large documents
DocumentFactory.Cache = new FileCache();
// Init the document viewer, pass along the panels
var createOptions = new DocumentViewerCreateOptions
{
// The middle panel for the view
ViewContainer = this.Controls.Find("middlePanel", false)[0],
// The left panel for the thumbnails
ThumbnailsContainer = this.Controls.Find("leftPanel", false)[0],
// The right panel is for bookmarks
BookmarksContainer = this.Controls.Find("rightPanel", false)[0],
};
// Create the document viewer
_documentViewer = DocumentViewerFactory.CreateDocumentViewer(createOptions);
// Use SVG viewing
_documentViewer.View.PreferredItemType = DocumentViewerItemType.Svg;
// Load a document
var fileName = @"C:\LEADTOOLS21\Resources\Images\test.pdf"; // input pdf here
var document = DocumentFactory.LoadFromFile(
fileName,
new LoadDocumentOptions { UseCache = DocumentFactory.Cache != null });
_documentViewer.Operation += (sender, e) =>
{
if (e.Operation == DocumentViewerOperation.LoadingBookmarks)
{
// Disable the bookmarks when we are loading, enable when we are done
var rightPanel = this.Controls.Find("rightPanel", true)[0];
if (rightPanel.InvokeRequired)
{
rightPanel.Invoke((MethodInvoker)delegate { rightPanel.Enabled = e.IsPostOperation; });
}
else
{
rightPanel.Enabled = e.IsPostOperation;
}
}
_documentViewer.SetDocument(document);
};

https://www.leadtools.com/help/sdk/v21/dh/doxui/documentviewer.html

2 Replies

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Marvin Reid5y ago
Seeing as no solution was provided, you can view multi page PDFs within one windows form project via the DocumentViewer class provided by the LEADTOOLS SDK. The Document Viewer will allow you to view all the pages within your PDF and will show you thumbnails of the multiple pages. You can try building on the following code to view this:
private DocumentViewer _documentViewer;

   private void Init()
   {
      // Initialize the user interface
      InitUI(); // UI shown in documentation

      // Init the cache. This is optional, but it can speed up viewing of large documents
      DocumentFactory.Cache = new FileCache();

      // Init the document viewer, pass along the panels
      var createOptions = new DocumentViewerCreateOptions
      {
         // The middle panel for the view
         ViewContainer = this.Controls.Find("middlePanel", false)[0],
         // The left panel for the thumbnails
         ThumbnailsContainer = this.Controls.Find("leftPanel", false)[0],
         // The right panel is for bookmarks
         BookmarksContainer = this.Controls.Find("rightPanel", false)[0],
      };

      // Create the document viewer
      _documentViewer = DocumentViewerFactory.CreateDocumentViewer(createOptions);

      // Use SVG viewing
      _documentViewer.View.PreferredItemType = DocumentViewerItemType.Svg;

      // Load a document
      var fileName = @"C:\LEADTOOLS21\Resources\Images\test.pdf";  // input pdf here
      var document = DocumentFactory.LoadFromFile(
         fileName,
         new LoadDocumentOptions { UseCache = DocumentFactory.Cache != null });

      _documentViewer.Operation += (sender, e) =>
      {
         if (e.Operation == DocumentViewerOperation.LoadingBookmarks)
         {
            // Disable the bookmarks when we are loading, enable when we are done
            var rightPanel = this.Controls.Find("rightPanel", true)[0];
            if (rightPanel.InvokeRequired)
            {
               rightPanel.Invoke((MethodInvoker)delegate { rightPanel.Enabled = e.IsPostOperation; });
            }
            else
            {
               rightPanel.Enabled = e.IsPostOperation;
            }
         }
           _documentViewer.SetDocument(document);
      };
https://www.leadtools.com/help/sdk/v21/dh/doxui/documentviewer.html
0
Uchiha Itachi12y ago
I never imagined such a problem. This supposed to be something like the memory violation problem for your pdf file is comparatively large. I'd like to change something like to apply some kind of 3rd party pdf viewer control in the project. And maybe some UI form control is also needed. Hope your problem soon be fixed. I also want to get the quickest solution.
0