This example demonstrates how to batch export form field data from multiple PDF files and combine them into a single JSON array. This is especially useful for data extraction workflows, form analytics, or integration with backend systems that require structured input. The code leverages Aspose.PDF for .NET to programmatically access and serialize form data, then uses built-in .NET JSON APIs to aggregate and persist the results.

Steps to Combine PDF Form Data into a JSON Array using C#

1. Define an array of input PDF file paths to process.
2. Initialize a JsonArray to hold the combined form data from all PDFs.
3. Iterate through each PDF file, check for existence, and load it using the Document class.
4. Export each PDF’s form fields to JSON format using the ExportToJson method into a MemoryStream.
5. Parse the exported JSON text into a JsonArray and add it as a nested element to the combined array.
6. Write the final combined JSON array to an output file with pretty-print formatting.

The steps above outline a robust pattern for extracting and consolidating form data across multiple documents. Each PDF contributes its own JSON array of form fields, resulting in a top-level array of arrays in the final output.

Code to Combine PDF Form Data into a JSON Array using C#

The example successfully demonstrates how to aggregate form data from several PDFs into a single JSON structure, preserving the per-document organization while enabling downstream processing or storage.