ImageGear .NET has the following samples (organized by category):
Before using an ASP.NET sample, you must edit the sample’s web.config file with the proper path to your binaries and Office Core folder. The settings are:
<appSettings>
  <add key="igSolutionName" value="Accusoft" />
  <add key="igSolutionKey" value="" />
  <add key="igLicenseKey" value="" />
  <add key="igComponent" value="~/bin/ImageGear24.Web.ImageDataProcessor.dll" />
  <add key="igPdfResources" value="" />
  <add key="igOfficeCoreDir" value="" />
  <add key="igBinaries" value="" />
  <add key="maxThreadsPerControl" value="4" />
  <add key="igVerifyDocuments" value="true" />
  <add key="igDisableFormats" value="dcraw, dcrawHeaderless" />
</appSettings>
Samples Location: $INSTALLDIR\Samples\Source Code\ASP.NET\...
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| CSharp > HTML5Viewer | HTML5 Viewer | How to display and navigate documents. | C#, ASP.NET | VS2010 VS2015  | 
| 
 CSharp > IsisScanningUsingASP.NET  | 
 WebForms  | 
 Scanning capabilities using ImageGear web components.  | 
 C#, ASP.NET  | 
 VS2010  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\ART\...
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| AddWatermarkToImage | WinForms | How to apply watermark to raster page. | C#, VB.NET | VS2010 VS2015 VS2017  | 
| 
 AddWatermarkToPDFPage  | 
 WinForms  | 
 Watermarking a PDF document by adding: 
 Images that support alpha channel transparency may be used.  | 
 C#, VB.NET  | 
 VS2010  | 
| AnnotateImageAndPDF_WPF | WPF | How to annotate images and PDF with ART marks. | C#, VB.NET | VS2010 VS2015 VS2017  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\[VS2010|VS2015|VS2017]\CAD\...
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| 
 CADViewer  | 
 WinForms  | 
 How to view and manipulate a CAD file and export it to other supported formats.  | 
 C#, VB.NET  | 
 VS2010  | 
| ConvertCADtoPDF | WinForms | How to open a CAD file and export it as a 2D or 3D PDF file. | C#, VB.NET | VS2010 VS2015 VS2017  | 
| CreateCADEntity | WinForms | How to create a blank CAD file and add entities to it. | C#, VB.NET | VS2010 VS2015 VS2017  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\[VS2010|VS2015|VS2017]\Conversion\...
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| 
 ConvertImage  | 
 WinForms  | 
 How to convert an image to a target format by setting compression, color space, bit-depth, and other saving options.  | 
 C#, VB.NET  | 
 VS2010  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\[VS2010|VS2015|VS2017]\ImageProcessing\...
For convenience, we added identical sample projects created with different versions of Visual Studio.
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| 
 ImageProcessingAndCleanup  | 
 WinForms  | 
 How to display and then manipulate an image in different ways.  | 
 C#, VB.NET  | 
 VS2010  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\[VS2010|VS2015|VS2017]\Viewing\...
For convenience, we added identical sample projects created with different versions of Visual Studio.
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| 
 ViewImagePropertiesAndMetadata  | 
 WinForms  | 
 How to view an image's metadata and properties such as dimensions, bit depth, color space, and resolution.  | 
 C#, VB.NET  | 
 VS2010  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\Licensing\...
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| OEMLicensing | Console | How to apply an OEM license using the ImageGear .NET API. | C#, VB.NET | VS2010 VS2015 VS2017  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\Medical\...
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| MedicalAndDICOM_WPF | WPF | A sample viewer for medical images and is intended for demonstration purposes ONLY. | C#, VB.NET | VS2010 VS2015 VS2017  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\...
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| 
 ConvertOfficeToPDF  | 
 WinForms  | 
 How to load and convert a Microsoft Office file to PDF.  | 
 C#, VB.NET  | 
 VS2010  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\[VS2010|VS2015|VS2017]\OCR\...
For convenience, we added identical sample projects created with different versions of Visual Studio.
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| OCRandMRC | WinForms | 
 How to perform OCR on an image file and output the resulting text to either a PDF, an Image Over Text PDF using MRC, or a TXT file.  | 
C#, VB.NET | VS2010 VS2015 VS2017  | 
| OCRUsingZones | WinForms | 
 How to perform OCR using zones and output the recognized text to a textbox.  | 
C#, VB.NET | VS2010 VS2015 VS2017  | 
| OCRLanguageSelection | WinForms | 
 How to enable / disable languages before performing OCR and sending the resulting data to a text box.  | 
C#, VB.NET | VS2010 VS2015 VS2017  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\[VS2010|VS2015|VS2017]\PDF\...
For convenience, we added identical sample projects created with different versions of Visual Studio.
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| AddImageToPDF | WinForms | How to add images to a PDF document with varying locations and opacity. | C#, VB.NET | VS2010 VS2015 VS2017  | 
| AddAndVerifyPDFSignatures | Console | How to add and verify digital signatures on a PDF document. | C#, VB.NET | VS2010 VS2015 VS2017  | 
| 
 ConvertDOCXtoPDF  | 
 WinForms  | 
 How to read a DOCX document page and save it as a PDF file.  | 
 C#, VB.NET  | 
 VS2010  | 
| 
 ConvertPDFtoSVG  | 
 WinForms  | 
 How to convert a PDF document to a SVG using Accusoft's API.  | 
 C#, VB.NET  | 
 VS2010  | 
| CreatePDFForm | Console | How to create and populate form fields on a new PDF. | C#, VB.NET | 
 VS2010  | 
| 
 EditFormFieldAppearances  | 
 WinForms  | 
 How to modify the visual appearance of fields and their annotations, such as, border color, style, and text color.  | 
 C#, VB.NET  | 
 VS2010  | 
| ExtractFormFieldData | Console | How to extract form field data from PDF files. | 
 C#, VB.NET  | 
VS2010 VS2015 VS2017  | 
| 
 ExtractTextFromPDF  | 
 WinForms  | 
 How to extract the text content from a PDF document and save it as a text file.  | 
 C#, VB.NET  | 
 VS2010  | 
| 
 ManipulatePDFAcroForms  | 
 WinForms  | 
 How to read, write, create, and remove AcroForm fields on a PDF document.  | 
 C#, VB.NET  | 
 VS2010  | 
| 
 PDFMerge  | 
 WinForms  | 
 How to merge two PDF documents into a one PDF document.  | 
 C#, VB.NET  | 
 VS2010  | 
| 
 PDFSecurity  | 
 WinForms  | 
 How to manage PDF security three ways: 
  | 
 C#, VB.NET  | 
 VS2010  | 
| 
 SaveCompressedPDF  | 
 Console  | 
 How to save a compressed PDF document.  | 
 C#, VB.NET  | 
 VS2010  | 
| 
 SavePDFtoImageGUI  | 
 WinForms  | 
 How to read a PDF document page by page, index, rasterize a page, and store the raster page as JPEG file.  | 
 C#, VB.NET  | 
 VS2010  | 
| 
 SplitPDFUsingMultipleThreads  | 
 Console  | 
 How to split PDFs using multiple threads.  | 
 C#, VB.NET  | 
 VS2010  | 
| 
 VerifyAndConvertToPDFA  | 
 WinForms  | 
 How to convert a PDF document into a PDFA standard and how to verify compliance with ISO-standard PDFA-1a.  | 
 C#, VB.NET  | 
 VS2010  | 
| 
 SavePDFtoMultiPageTIF.WPF  | 
 WPF  | 
 Converting a PDF into a multi-page TIF using WPF controls.  | 
 C#, VB.NET  | 
 VS2010  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\TWAIN\...
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| TWAINScanning | WinForms | How to scan a document with or without the TWAIN scanner's UI, view the document, then save as a PDF, TIFF, or JPG. | 
 C#, VB.NET  | 
VS2010 VS2015 VS2017  | 
Samples Location: $INSTALLDIR\Samples\Source Code\[CSharp|VBNET]\[VS2010|VS2015|VS2017]\Viewing\...
For convenience, we added identical sample projects created with different versions of Visual Studio.
| 
 Name  | 
 GUI  | 
 This Sample Demonstrates...  | 
 Languages  | 
 IDEs  | 
|---|---|---|---|---|
| 
 DisplayUsingWinForms  | 
 WinForms  | 
 How to display, navigate, zoom, rotate, and align documents in a GUI using WinForms.  | 
 C#, VB.NET  | 
 VS2010  | 
| DisplayUsingWPF | WPF | How to display, navigate, zoom, rotate, and align documents in a GUI using WPF. | 
 C#, VB.NET  | 
VS2010 VS2015 VS2017  |