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VB.NET UWP/WinRT Examples

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(VB.NET UWP/WinRT) Get a List of Message IDs in GMail User's Mailbox

Demonstrates how to get a list of message IDs in a GMail mailbox. The "userId" can be either the user's email address or the special value "me" to indicate the authenticated user.

For more information, see https://developers.google.com/gmail/api/v1/reference/users/messages/list

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.

Dim http As New Chilkat.Http

http.AuthToken = "ACCESS_TOKEN"

http.Accept = "application/json"


Dim resp As Chilkat.HttpResponse = Await http.QuickRequestAsync("GET","https://www.googleapis.com/gmail/v1/users/userId/messages")
If (http.LastMethodSuccess <> True) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Response Status Code: " & resp.StatusCode)

Dim jsonResponse As New Chilkat.JsonObject
jsonResponse.Load(resp.BodyStr)
jsonResponse.EmitCompact = False
Debug.WriteLine(jsonResponse.Emit())

If (resp.StatusCode <> 200) Then
    Debug.WriteLine("Failed.")

    Exit Sub
End If





' {
'   "messages": [
'     users.messages Resource
'   ],
'   "nextPageToken": string,
'   "resultSizeEstimate": unsigned integer
' }



Dim id As String
Dim threadId As String

Dim resultSizeEstimate As Integer = jsonResponse.IntOf("resultSizeEstimate")
Dim i As Integer = 0
Dim count_i As Integer = jsonResponse.SizeOfArray("messages")
While i < count_i
    jsonResponse.I = i
    id = jsonResponse.StringOf("messages[i].id")
    threadId = jsonResponse.StringOf("messages[i].threadId")
    i = i + 1
End While

 

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