How to create a thumbnail viewer

This sample shows how you can create a thumbnail viewer for your PDF application and it builds on the SimpleViewer code sample. The ThumbnailsViewer class creates an interface from which you can easily get an overview of all the pdf pages in the document. In short, the ThumbnailsViewer has a LayoutManager which manages how the thumbnails are ordered, and a link is made to the PageViewer to synchronize the views and a link is made to the PDF document.

PDF Controls Thumbnail Viewer

TallComponents.Interaction.LayoutManagers.AutoColumnGridLayoutManager autoColumnGridLayoutManager1 = 
new TallComponents.Interaction.LayoutManagers.AutoColumnGridLayoutManager();
TallComponents.PDF.Spacing spacing1 = new TallComponents.PDF.Spacing();
TallComponents.PDF.Spacing spacing2 = new TallComponents.PDF.Spacing();

this.thumbnailsViewer1.ActionHandler = null;
this.thumbnailsViewer1.Dock = System.Windows.Forms.DockStyle.Fill;
          
//couple the thumbnailsViewer to the pdf document
this.thumbnailsViewer1.Document = this.document1;
         
//draw a red rectangle to indicate what parts of the pdf pages are visible
this.thumbnailsViewer1.DrawPagesViewerRectangles = true;
this.thumbnailsViewer1.HideHorizontalScrollbar = false;
this.thumbnailsViewer1.HideVerticalScrollbar = false;
autoColumnGridLayoutManager1.ColumnCount = 1;
autoColumnGridLayoutManager1.Indent = 0;
spacing1.Bottom = 75;
spacing1.Left = 75;
spacing1.Right = 75;
spacing1.Top = 75;
autoColumnGridLayoutManager1.Margin = spacing1;
spacing2.Bottom = 75;
spacing2.Left = 75;
spacing2.Right = 75;
spacing2.Top = 75;
autoColumnGridLayoutManager1.Spacing = spacing2;
this.thumbnailsViewer1.LayoutManager = autoColumnGridLayoutManager1;
this.thumbnailsViewer1.Location = new System.Drawing.Point(0, 0);
this.thumbnailsViewer1.MaxZoom = 0.8;
this.thumbnailsViewer1.MinZoom = 0.02;
this.thumbnailsViewer1.Name = "thumbnailsViewer1";

//couple the thumbnailsViewer to the pagesViewer to couple clicking actions
this.thumbnailsViewer1.PagesViewer = this.pagesViewer1;
this.thumbnailsViewer1.Size = new System.Drawing.Size(199, 431);
this.thumbnailsViewer1.TabIndex = 0;
this.thumbnailsViewer1.Text = "thumbnailsViewer1";
this.thumbnailsViewer1.VisibleLeft = 0;
this.thumbnailsViewer1.VisibleTop = 0;
this.thumbnailsViewer1.ZoomFactor = 0.125;
Download PDFControls.NET 2.0
We will send you a download link
Why do we ask your email address?
We send tips that speed up your evaluation
We let you know about bug fixes
You can always unsubscribe with one click
We never share your address with a 3rd party
Thank you for your download

We have sent an email with a download link. Alternatively, you may want to use the NuGet package manager to install our library.

Nuget ID

Use the NugetID and start right away, or download the package and install it handmatically