Why Extract Customs Declaration with Csharp

Logistics companies process thousands of Customs Declaration documents monthly. Using Csharp to automate Customs Declaration data extraction eliminates manual entry, reduces errors, and speeds up document processing from minutes to seconds. With the Cargoffer OCR API, you can integrate Customs Declaration extraction into any Csharp application in under 10 lines of code.

Setting Up the Csharp Client

First, get your free API key from the dashboard. Then install the HTTP client for Csharp and configure authentication. The API uses Bearer token auth — pass your key in the Authorization header.

Uploading a Customs Declaration Document

Use the POST /api/upload endpoint to send the document file. The system auto-detects Customs Declaration format and routes it to the best extraction model. Upload in PDF, image, or Excel format.

Extracted Data Fields

declaration_number, customs_office, exporter, importer, hs_code, goods_description, gross_weight, invoice_value, incoterm, country_of_origin, duties, total_duties.

Csharp Code Example

The complete Csharp integration code handles file upload, extraction request, polling for results, and error management. Error types: 401 (invalid key), 402 (quota exceeded — upgrade your plan), 429 (rate limit — wait and retry), 422 (malformed request).

Pricing & Volume

Each Customs Declaration extraction costs from 0.002 EUR per page. The free plan includes 1 page. The Pro plan (49 EUR/month) covers 1,000 pages — enough for 500000 Customs Declaration documents. Manual Customs Declaration data entry costs 3-15 EUR per document — OCR saves 99%.

Related Integrations

See also: [Customs Declaration with Python](https://ocr.cargoffer.com/tutorials/documents/customs-declaration-extraction/integration/python) | [Customs Declaration with JavaScript](https://ocr.cargoffer.com/tutorials/documents/customs-declaration-extraction/integration/javascript) | [Customs Declaration with Java](https://ocr.cargoffer.com/tutorials/documents/customs-declaration-extraction/integration/java) | [Customs Declaration via REST API](https://ocr.cargoffer.com/tutorials/documents/customs-declaration-extraction)