VB.NET UWP/WinRT Google Drive: Create a New Comment on a File

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Creates a new comment on a file. The file is specified by file ID. This example creates a comment on the file having id = "0B5drHSd5ZHwgc3RhcnRlcl9maWxlX2Rhc2hlclYw".

Documentation: https://developers.google.com/drive/v3/reference/comments/create

Dim rest As New Chilkat.Rest
Dim success As Boolean

'   Provide a previously obtained OAuth2 access token.
Dim oauth2 As New Chilkat.OAuth2
oauth2.AccessToken = "OAUTH2_ACCESS_TOKEN"
rest.SetAuthOAuth2(oauth2)

success = Await rest.ConnectAsync("www.googleapis.com",443,True,True)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


rest.AddQueryParam("fields","author,content")


'  The following code creates the JSON request body.
'  The JSON created by this code is shown below.
Dim jsonReq As New Chilkat.JsonObject
jsonReq.UpdateString("content","This is a test comment about this file...")


Dim sbReq As New Chilkat.StringBuilder
jsonReq.EmitSb(sbReq)

rest.AddHeader("Content-Type","application/json")

Dim sbJson As New Chilkat.StringBuilder
success = Await rest.FullRequestSbAsync("POST","/drive/v3/files/0B5drHSd5ZHwgc3RhcnRlcl9maWxlX2Rhc2hlclYw/comments",sbReq,sbJson)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


If (rest.ResponseStatusCode <> 200) Then
    Debug.WriteLine("Received error response code: " & rest.ResponseStatusCode)
    Debug.WriteLine("Response body:")
    Debug.WriteLine(sbJson.GetAsString())
    Exit Sub
End If


Dim json As New Chilkat.JsonObject
json.LoadSb(sbJson)

'  The following code parses the JSON response.
'  A sample JSON response is shown below the sample code.
Dim authorKind As String
Dim authorDisplayName As String
Dim authorPhotoLink As String
Dim authorMe As Boolean
Dim content As String

authorKind = json.StringOf("author.kind")
authorDisplayName = json.StringOf("author.displayName")
authorPhotoLink = json.StringOf("author.photoLink")
authorMe = json.BoolOf("author.me")
content = json.StringOf("content")


Debug.WriteLine("Example Completed.")

Sample JSON Request Body

{
  "content": "This is a test comment about this file..."
}

Sample JSON Response Body

{
  "author": {
    "kind": "drive#user",
    "displayName": "Matt Fausey",
    "photoLink": "//ssl.gstatic.com/s2/profiles/images/silhouette96.png",
    "me": true
  },
  "content": "This is a test comment about this file..."
}