Write a scanning control app in VB or c#

Scanning Application to control scanning of batches to a database, creating receipts with QR Codes A desktop application written as a DLL to control the scanning one or more documents and write the results to a SQL database. The application must be written in VB or C# and must work with any intelligent scanner (TWAIN device). The process is as follows: - Capture a source (alpha), and a reference number (up to 16 digits), and the number of documents in the ‘batch’ - Control the scanning of the documents ‘Please scan document 1’ (or 2, etc - Create a QR code to include the reference number - Create a PDF for each document with the QR code; the filename is reference number followed by the date (yymmdd) and ‘-1’ or ‘-2’ as a suffix and - Print a receipt for the ‘batch’, showing fixed information, the date, reference number, number of documents, and the QR code Note. Once a freelancer is selected a full specification will be supplied. Note. Previous success in this area essential