(Visual Basic 6.0) Asynchronous HTTP Upload

Demonstrates how to do an HTTP upload asynchronously in a background thread.

A server-side C# example showing how to receive an upload is located at C# ASP.NET Code to Receive Upload

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim upload As New ChilkatUpload

' Specify the page (ASP, ASP.NET, Perl, Python, Ruby, CGI, etc)
' that will process the HTTP Upload.
upload.Hostname = "www.mywebserver.com"
upload.Path = "/receiveUpload.aspx"

' Add one or more files to be uploaded.
upload.AddFileReference "file1","dude.gif"
upload.AddFileReference "file2","pigs.xml"
upload.AddFileReference "file3","sample.doc"

' Begin the HTTP upload in a background thread:
Dim success As Long
success = upload.BeginUpload()
If (success <> 1) Then
    Debug.Print upload.LastErrorText
Else
    Debug.Print "Upload started..."
End If

' Wait for the upload to finish.
' Print the progress as we wait...
Do While (upload.UploadInProgress = 1)
    ' We can abort the upload at any point by calling:
    ' upload.AbortUpload();

    ' Display the percentage complete and the number of bytes uploaded so far..
    ' The total upload size will become set after the upload begins:
    Debug.Print upload.PercentUploaded & "% " & upload.NumBytesSent & "/" & upload.TotalUploadSize

    ' Sleep 2/10ths of a second.
    upload.SleepMs 200

Loop

' Did the upload succeed?
If (upload.UploadSuccess = 1) Then
    Debug.Print "Files uploaded!"
Else
    Debug.Print upload.LastErrorText
End If