(VB.NET) REST File Upload (multipart/form-data)

Demonstrates how to upload a file using multipart/form-data.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim rest As New Chilkat.Rest

' Connect to the HTTP server using TLS.
Dim bTls As Boolean = True
Dim port As Integer = 443
Dim bAutoReconnect As Boolean = True
' Make sure to replace "www.chilkatsoft.com" with your domain..
Dim success As Boolean = rest.Connect("www.chilkatsoft.com",port,bTls,bAutoReconnect)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


Dim fileStream As New Chilkat.Stream
fileStream.SourceFile = "qa_data/jpg/starfish.jpg"

rest.AddHeader("Content-Type","multipart/form-data")

rest.PartSelector = "1"
rest.AddHeader("Content-Type","image/jpg")
rest.AddHeader("Content-Disposition","form-data; name=""filename""; filename=""starfish.jpg""")
rest.SetMultipartBodyStream(fileStream)
rest.PartSelector = "0"

Dim responseBody As String = rest.FullRequestMultipart("POST","/the_uri_path_to_receive_the_upload")
If (rest.LastMethodSuccess <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


If (rest.ResponseStatusCode <> 200) Then
    Debug.WriteLine("Received error response code: " & rest.ResponseStatusCode)
    Exit Sub
End If


Debug.WriteLine("File uploaded")