VB.NET

Set a Multipart Part Body from a StringBuilder

Demonstrates Rest.SetMultipartBodySb, which sets the text body of the selected multipart part from a StringBuilder.

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.

Chilkat VB.NET Downloads

Download Chilkat for VB.NET

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

'  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","application/json")

'  Set the text body of the selected part from a StringBuilder.
Dim sbBody As New Chilkat.StringBuilder
sbBody.Append("{ ""key"": ""value"" }")
success = rest.SetMultipartBodySb(sbBody)
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)