VB.NET

Set a Multipart Part Body from BinData

Demonstrates Rest.SetMultipartBodyBd, which sets the binary body of the selected multipart part from a BinData.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background. A multipart request is assembled part by part: the part selector chooses the part being built, header fields describe it, and a SetMultipartBody method supplies its content. The request is then sent with a multipart send or full-request method.

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VB.NET

Dim success As Boolean = False

Dim rest As New Chilkat.Rest
Dim bTls As Boolean = True
Dim bAutoReconnect As Boolean = True
success = rest.Connect("example.com",443,bTls,bAutoReconnect)
If (success = False) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If

'  The file paths are relative to the application's current working directory.  Absolute paths
'  may also be used.  Supply the paths appropriate to your own environment.

'  Select the multipart part to build, and set its header fields.
rest.PartSelector = "1"
rest.AddHeader("Content-Disposition","form-data; name=""field1""")
rest.AddHeader("Content-Type","image/png")

'  Set the binary body of the selected part from a BinData.
Dim bdBody As New Chilkat.BinData
Dim bLoaded As Boolean = bdBody.LoadFile("qa_data/image.png")
If (bLoaded <> True) Then
    Debug.WriteLine("Failed to load the part body file.")
    Exit Sub
End If

success = rest.SetMultipartBodyBd(bdBody)
If (success = False) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


Dim responseText As String = rest.FullRequestMultipart("POST","/api/upload")
If (rest.LastMethodSuccess = False) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If

Debug.WriteLine(responseText)