GroupDocsGists

// Edit PPT/PPTX presenatations in C# using GroupDocs presentation editing and automation API
using (FileStream fs = File.OpenRead("path/presentation.pptx"))
{
    // Load Presentation
    Options.PresentationLoadOptions loadOptions = new PresentationLoadOptions();
    loadOptions.Password = "P@$$w0Rd";

    // Edit Presentation
    using (Editor editor = new Editor(delegate { return fs; }, delegate { return loadOptions; }))
    {

GroupDocsGists

// Apply Image Watermark to specific page(s) of Word file using Java
Watermarker watermarker = new Watermarker("path/document.docx");

ImageWatermark watermark = new ImageWatermark("path/watermark-logo.png");
watermark.setOpacity(0.7);
watermark.setHorizontalAlignment(HorizontalAlignment.Center);
watermark.setVerticalAlignment(VerticalAlignment.Center);

// Add watermark to the last page
WordProcessingContent content = watermarker.getContent(WordProcessingContent.class);

GroupDocsGists

// Add Watermark Image to specific page(s) of Word document using C#
using (Watermarker watermarker = new Watermarker("path/multipage-document.docx"))
{
    ImageWatermark watermark = new ImageWatermark("path/image.png")
    {
        Opacity = .5,
        HorizontalAlignment = HorizontalAlignment.Center,
        VerticalAlignment = VerticalAlignment.Center
    };

GroupDocsGists

/*
 * Update password of the protected spreadsheet files using Java
 */
LoadOptions loadOptions = new LoadOptions("mySECRETpassWORD");
UpdatePasswordOptions updateOptions = new UpdatePasswordOptions("TOPSECRET_pa22WORD");

Merger merger = new Merger("path/protected-spreadsheet.xlsx", loadOptions);
merger.updatePassword(updateOptions);
merger.save("path/pwd-changed-spreadsheet.xlsx");

GroupDocsGists

/*
 * Change password of protected Excel spreadsheets using C#
 */
string filePath = @"path/protected-spreadsheet.xlsx";

LoadOptions loadOptions = new LoadOptions("mySECRETpassWORD");
UpdatePasswordOptions updateOptions = new UpdatePasswordOptions("TOPSECRET_pa22WORD");

using (Merger merger = new Merger(filePath, loadOptions))
{

GroupDocsGists

// Merge Selective Pages of Word Documents using Java
Merger merger = new Merger("source_document.docx"))
{
    // Set the merging options
    JoinOptions joinOptions = new JoinOptions(2,3); // Specify the starting and ending page number
    
    // Merge the documents
    merger.join("document_to_merge.docx", joinOptions); // using joining settings
    merger.join("another_document_to_merge.docx", new JoinOptions(new int[] { 2, 4, 6 })); // Specifying page number(s)
    

GroupDocsGists

// Merge Selective Pages of Word Documents using C#
using (Merger merger = new Merger("source_document.docx"))
{
    // Set the merging options
    JoinOptions joinOptions = new JoinOptions(2,3); // Specify the starting and ending page number
    
    // Merge the documents
    merger.Join("document_to_merge.docx", joinOptions); // using joining settings
    merger.Join("another_document_to_merge.docx", new JoinOptions(new[] { 2, 4, 6 })); // Specifying page number(s)
    

GroupDocsGists

// Scan Barcode using Java
try(Parser parser = new Parser("/path/barcode.png"))
{
    // Extract all Barcodes.
    Iterable<PageBarcodeArea> barcodes = parser.getBarcodes();
  
    // Iterate
    for(PageBarcodeArea barcode : barcodes)
    {
        // Print the Identified Barcode values

GroupDocsGists

// Scan Barcode using C#
using (Parser parser = new Parser("/path/barcode.png"))
{
    // Extract all Barcodes.
    IEnumerable<PageBarcodeArea> barcodes = parser.GetBarcodes();

    // Iterate over Barcodes
    foreach (PageBarcodeArea barcode in barcodes)
    {
        // Print the Identified Barcode values

GroupDocsGists

// Accept and reject identified changes by comparing PDF documents using Java

Comparer comparer = new Comparer("path/document-1.pdf");
comparer.add("path/document-2.pdf");

ChangeInfo[] changes = comparer.getChanges();

changes[0].setComparisonAction(ComparisonAction.REJECT);
changes[1].setComparisonAction(ComparisonAction.ACCEPT);