[Solved] Upload file to Stream always give ContentLength 0 in ASP.Net

You are right it has a own class ExtractDocumentJson .Thankfully i solved my problem below this code.

'Parser for making json
Using MemoryStream = New System.IO.MemoryStream
File.InputStream.CopyTo(MemoryStream)
MemoryStream.Position = 0

Using Parser As New PdfParser(QS.IDImportDocumentType, QS.IDProcessType)
Json = Parser.ExtractDocumentJson(MemoryStream)
End Using
End Using