GroupDocsGists

foreach (string filePath in Directory.GetFiles(@"C:\Documents"))                        
{                                                                                       
    using (Watermarker watermarker = new Watermarker(filePath))                         
    {                                                                                   
        TextWatermark watermark = new TextWatermark("top secret", new Font("Arial", 36));
        watermark.ForegroundColor = Color.Red;
        watermark.HorizontalAlignment = HorizontalAlignment.Center;
        watermark.VerticalAlignment = VerticalAlignment.Center;
 
        watermarker.Add(watermark);                                            

GroupDocsGists

Document doc = ... // Loading a template document.
CsvDataSource dataSource = ... // Loading CSV.
DocumentAssembler assembler = new DocumentAssembler();
assembler.AssembleDocument(doc, dataSource, "persons");

GroupDocsGists

// Create list of annotations
List<AnnotationBase> annotations = new List<AnnotationBase>()
{
    new AreaAnnotation()
    {
        PageNumber = 0,
        Box = new Rectangle(100, 100, 100, 100),
        Message = "area"
    },
                 

GroupDocsGists

// Creating annotation list
List<AnnotationInfo> annotations = new List<AnnotationInfo>()
{
    new AnnotationInfo()
    {
        PageNumber = 0,
        Box = new Rectangle(100, 100, 100, 100),
        Type = Domain.AnnotationType.Area,
        Text = "area"
    },

GroupDocsGists

// For complete examples and data files, please go to https://github.com/groupdocs-conversion/GroupDocs.Conversion-for-Java
ConversionHandler conversionHandler = new ConversionHandler(Utilities.getConfiguration()); 

CellsLoadOptions loadOptions = new CellsLoadOptions();
loadOptions.setSkipEmptyRowsAndColumns(true);
loadOptions.setOnePagePerSheet(true);

PdfSaveOptions saveOptions = new PdfSaveOptions(); 

ConvertedDocument result = conversionHandler.<String>convert(sourceFileName, loadOptions, saveOptions);

GroupDocsGists

// For complete examples and data files, please go to https://github.com/groupdocs-conversion/GroupDocs.Conversion-for-.NET
Contracts.Func<LoadOptions> getLoadOptions = () => new SpreadsheetLoadOptions
{
    SkipEmptyRowsAndColumns = true,
    OnePagePerSheet = true
};
using (Converter converter = new Converter("sample.xlsx", getLoadOptions))
{
    PdfConvertOptions options = new PdfConvertOptions();
    converter.Convert("converted.pdf", options);

GroupDocsGists

string indexFolder = @"c:\MyIndex\";
string documentsFolder1 = @"c:\MyDocuments\";
string documentsFolder2 = @"c:\MyDocuments2\";
// Creating an index in the specified folder
Index index = new Index(indexFolder);
// Indexing documents from the specified folders
index.Add(documentsFolder1);
index.Add(documentsFolder2);
// Getting indexed paths from the index
string[] indexedPaths1 = index.GetIndexedPaths();

GroupDocsGists

string indexFolder = @"c:\MyIndex";
string documentFolder = @"c:\MyDocuments";
// Creating index
Index index = new Index(indexFolder);
// Setting blended character type for Chinese characters
HashSet<char> hashSet = new HashSet<char>();
for (char character = (char)0x4E00; character <= 0x9FFF; character++) // Common
{
    hashSet.Add(character);
}

GroupDocsGists

string indexFolder = @"c:\MyIndex";
string documentFolder = @"c:\MyDocuments";
// Creating index
Index index = new Index(indexFolder);
// Adding documents to index
index.Add(documentFolder);
// Searching
SearchResult result = index.Search("hobbit");
// Highlighting found terms in short HTML snippets
if (result.DocumentCount > 0)

GroupDocsGists

string indexFolder = @"c:\MyIndex\";
string documentsFolder = @"c:\MyDocuments\";
// Creating an index in the specified folder
Index index = new Index(indexFolder);
// Indexing documents from the specified folder
index.Add(documentsFolder);
// Creating a search options object
SearchOptions options = new SearchOptions();
options.FuzzySearch.Enabled = true; // Enabling the fuzzy search
options.FuzzySearch.FuzzyAlgorithm = new TableDiscreteFunction(2); // Setting the number of possible differences for each word