Convert DOC To PDF From Uploaded File | VB.NET | DOC To PDF APIByteScout PDF SDK

Convert DOC To PDF From Uploaded File | VB.NET | DOC To PDF API

Module1.vb:

VB
Imports System.IO
Imports System.Net
Imports Newtonsoft.Json.Linq

Module Module1

    ' The authentication key (API Key).
    ' Get your own by registering at https://app.pdf.co/documentation/api
    Const API_KEY As String = "***********************************"

    ' Source DOC or DOCX file
    const SourceFile as string = ".\sample.docx"
    ' Destination PDF file name
    const DestinationFile as string = ".\result.pdf"

    Sub Main()

        ' Create standard .NET web client instance
        Dim webClient As WebClient = New WebClient()

        ' Set API Key
        webClient.Headers.Add("x-api-key", API_KEY)

        ' 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
        ' * If you already have a direct file URL, skip to the step 3.

        ' Prepare URL for `Get Presigned URL` API call
        Dim query As string = Uri.EscapeUriString(string.Format(
            "https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name={0}", 
            Path.GetFileName(SourceFile)))

        Try
            ' Execute request
            Dim response As string = webClient.DownloadString(query)

            ' Parse JSON response
            Dim json As JObject = JObject.Parse(response)

            If json("error").ToObject(Of Boolean) = False Then
                ' Get URL to use for the file upload
                Dim uploadUrl As string = json("presignedUrl").ToString()
                ' Get URL of uploaded file to use with later API calls
                Dim uploadedFileUrl As string = json("url").ToString()

                ' 2. UPLOAD THE FILE TO CLOUD.

                webClient.Headers.Add("content-type", "application/octet-stream")
                webClient.UploadFile(uploadUrl, "PUT", SourceFile) ' You can use UploadData() instead if your file is byte array or Stream

                ' 3. CONVERT UPLOADED CSV FILE TO PDF

                ' Prepare URL for `DOC To PDF` API call
                query = Uri.EscapeUriString(String.Format(
                    "https://api.pdf.co/v1/pdf/convert/from/doc?name={0}&url={1}",
                    Path.GetFileName(DestinationFile),
                    uploadedFileUrl))

                ' Execute request
                response = webClient.DownloadString(query)

                ' Parse JSON response
                json = JObject.Parse(response)

                If json("error").ToObject(Of Boolean) = False Then

                    ' Get URL of generated PDF file
                    Dim resultFileUrl As string = json("url").ToString()

                    ' Download PDF file
                    webClient.DownloadFile(resultFileUrl, DestinationFile)

                    Console.WriteLine("Generated PDF file saved as ""{0}"" file.", DestinationFile)

                Else 
                    Console.WriteLine(json("message").ToString())
                End If

            End If

        Catch ex As WebException
            Console.WriteLine(ex.ToString())
        End Try

        webClient.Dispose()


        Console.WriteLine()
        Console.WriteLine("Press any key...")
        Console.ReadKey()

    End Sub

End Module