Search Text by Keyword

Introduction

In this tutorial, we will delve into using GroupDocs.Parser for .NET to search text by keyword within documents. GroupDocs.Parser is a powerful library that enables developers to extract text, metadata, and other information from various file formats, such as PDFs, Microsoft Office documents, and more. Searching for specific keywords within these documents can be essential for applications dealing with large volumes of textual data.

Prerequisites

Before we begin, ensure you have the following set up:

  1. Development Environment: Visual Studio or any preferred .NET IDE.
  2. GroupDocs.Parser for .NET: Download the library from here.
  3. Access to Sample Files: Prepare a sample file (e.g., PDF, DOCX) to test the keyword search functionality.

Import Namespaces

First, you need to include the necessary namespaces in your project.

using System;
using System.Collections.Generic;
using System.Text;
using GroupDocs.Parser.Data;

Step 1: Instantiate the Parser Class

Begin by creating an instance of the Parser class and provide the path to your sample file.

using (Parser parser = new Parser("YourSampleFile.pdf"))
{
    // Search a keyword
    IEnumerable<SearchResult> searchResults = parser.Search("test");
    // Iterate over search results
    foreach (SearchResult result in searchResults)
    {
        // Print the index and found text
        Console.WriteLine($"At {result.Position}: {result.Text}");
    }
}

Step 2: Search for a Keyword

Within the using block, call the Search method on the parser object, passing the desired keyword as an argument.

IEnumerable<SearchResult> searchResults = parser.Search("test");

Replace "test" with the keyword you wish to search for within the document.

Step 3: Iterate over Search Results

Next, iterate over the search results obtained from the Search method using a foreach loop.

foreach (SearchResult result in searchResults)
{
    Console.WriteLine($"At {result.Position}: {result.Text}");
}

For each SearchResult object result, you can access its Position (index) and Text (the found text).

Conclusion

In this tutorial, we explored how to use GroupDocs.Parser for .NET to search text by keyword within documents effortlessly. Leveraging the Search method of the Parser class allows for efficient retrieval of relevant text snippets based on specific search terms.

FAQ’s

Is GroupDocs.Parser compatible with various document formats?

Yes, GroupDocs.Parser supports a wide range of file formats, including PDF, DOCX, XLSX, PPTX, and more.

Can I perform advanced text extraction operations using GroupDocs.Parser?

Absolutely! Apart from text search, GroupDocs.Parser enables metadata extraction, structured text extraction, and more.

Where can I find detailed documentation for GroupDocs.Parser?

Explore the complete documentation here.

Visit the GroupDocs forum for support and discussions here.

Is there a trial version available to evaluate GroupDocs.Parser before purchasing?

Yes, you can access the free trial here.

Extract Text Structure Search Text by Pages