Add Option to Add Attachment and save it in Gridview ASP.NET & VB.NET -- 2

Hi I need the following points to be added in the project: • In Journal Voucher page, need to allow user to select 1 or more files to be attached to the transaction and save the files in folder in the server ( TRANS_ATTACH table ). It should show a gridview so user can open file dialog and select the file and then enter a description to that file and add other attachment if need. And another button to delete or change the attachment if exist. • In Receive Voucher page, need to add JavaScript code to make the calculation of total price in the details gridview to be done with post back as the current code. And this should be reflected on Total Value and Total Quantity fields. • In Employee Documents page, need to add additional column in the gridview so user can click a button to select the attachment for the document for each row if there is more than one row and then save the files in folder in the server (save file path in AttachmentPath column in HR_EMP_DOCS table ). And another button to delete or change the attachment if exist. • All above pages are already exist in the project. • Programming should be in ASP.NET and VB.NET. • Modification should be in the current VS 2017 project file. • Project file and database is available upon request.