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VB.NET UWP/WinRT Examples

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(VB.NET UWP/WinRT) Google Contacts - Adding/Updating a photo for a contact

Demonstrates how to upload a photo for a Google Contact.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

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

'  --------------------------------------------------------------------------------------------------------
'  Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
'  Once connected, the REST object may be re-used for many REST API calls.
'  (It's a good idea to put the connection setup code in a separate function/subroutine.)
'  --------------------------------------------------------------------------------------------------------

'  It is assumed we previously obtained an OAuth2 access token.
'  This example loads the JSON access token file
'  saved by this example: Get Google Contacts OAuth2 Access Token

Dim jsonToken As New Chilkat.JsonObject
Dim success As Boolean = jsonToken.LoadFile("qa_data/tokens/googleContacts.json")
If (success <> True) Then
    Debug.WriteLine("Failed to load googleContacts.json")
    Exit Sub
End If


Dim gAuth As New Chilkat.AuthGoogle
gAuth.AccessToken = jsonToken.StringOf("access_token")

Dim rest As New Chilkat.Rest

'  Connect using TLS.
Dim bAutoReconnect As Boolean = True
success = Await rest.ConnectAsync("www.google.com",443,True,bAutoReconnect)

'  Provide the authentication credentials (i.e. the access token)
rest.SetAuthGoogle(gAuth)

'  ----------------------------------------------
'  OK, the REST connection setup is completed..
'  ----------------------------------------------

'  To upload a photo for the contact, send the following:

'  	PUT /m8/feeds/photos/media/default/contactId
'  	If-match: Etag
'  	Content-Type: image/*
'  	...
'  	[Photo data bytes]

rest.AddHeader("GData-Version","3.0")
rest.AddHeader("If-Match","*")
rest.AddHeader("Content-Type","image/*")

Dim sbPath As New Chilkat.StringBuilder
sbPath.Append("/m8/feeds/photos/media/default/{contactId}")
'  Upload a photo for the contact having contactId = "1ea2e4fe0ef24e09"
Dim numReplacements As Integer = sbPath.Replace("{contactId}","1ea2e4fe0ef24e09")

'  Let's get our photo data..
Dim pngData As New Chilkat.BinData
success = pngData.LoadFile("qa_data/png/dude.png")

Dim sbResponseBody As New Chilkat.StringBuilder
success = Await rest.FullRequestBdAsync("PUT",sbPath.GetAsString(),pngData,sbResponseBody)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


'  A successful response will have a status code equal to 200.
If (rest.ResponseStatusCode <> 200) Then
    Debug.WriteLine("response status code = " & rest.ResponseStatusCode)
    Debug.WriteLine("response status text = " & rest.ResponseStatusText)
    Debug.WriteLine("response header: " & rest.ResponseHeader)
    Debug.WriteLine("response body: " & sbResponseBody.GetAsString())
    Exit Sub
End If


'  If the 200 success response was received.
Debug.WriteLine("Response Body:")
Debug.WriteLine(sbResponseBody.GetAsString())
Debug.WriteLine("Success.")

 

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