Get /Put Device Alias using Teamviewer REST API - json

Question

Im looking to get a list of all the devices on my work admin teamviewer account using vb.net. I would also like to be able to change the "Alias" of a given device using it's device id. i know very little about API's. i found the following example but i am not sure how to adapt it to get the json response.
instead of the accesstoken, i believe i need to use the client id and secret id along with the authorization code in order to use this. if i run it in it's current start i get a 401 unauthorized error. Any help would be appreciated.
i also have no idea how to use "PUT" to change the Alias using the device id which will both be entered in textboxes. ex alias = textbox1.text and device_id = textbox2.text
Private Sub SurroundingSub()
Dim accessToken As String = "xxxxxxxxxxxxxxxxxxx"
Dim apiVersion As String = "v1"
Dim tvApiBaseUrl As String = "https://webapi.teamviewer.com"
Dim address As String = tvApiBaseUrl & "/api/" & apiVersion & "/devices"
Try
Dim request As HttpWebRequest = TryCast(WebRequest.Create(address), HttpWebRequest)
request.Headers.Add("Bearer", accessToken)
request.Method = "GET"
Dim webResp As WebResponse = request.GetResponse()
Catch __unusedException1__ As Exception
msgbox(__unusedException1__.ToString)
End Try
End Sub

Answer 1

Here is the Get all devices code:
Private Sub get_teamviewer_devices()
Dim accessToken As String = "XXXXXXXXXXXXXXXXXXXXX"
Dim apiVersion As String = "v1"
Dim tvApiBaseUrl As String = "https://webapi.teamviewer.com"
Dim address As String = tvApiBaseUrl & "/api/" & apiVersion & "/devices"
Dim result_json As String = Nothing
Try
Dim request As HttpWebRequest = TryCast(WebRequest.Create(address), HttpWebRequest)
request.Headers.Add("Authorization", "Bearer " & accessToken)
request.Method = "GET"
Dim webResp As WebResponse = request.GetResponse()
Using reader = New StreamReader(webResp.GetResponseStream)
result_json = reader.ReadToEnd()
End Using
TextBox1.Text = result_json
Catch __unusedException1__ As Exception
MsgBox(__unusedException1__.ToString)
End Try
End Sub
Here is the PUT portion to change an alias:
Public Sub change_alias(ByVal device_id As String, ByVal alias_str As String)
Dim accessToken As String = "XXXXXXXXXXXXXXXXXXXXX"
Dim apiVersion As String = "v1"
Dim tvApiBaseUrl As String = "https://webapi.teamviewer.com"
Dim address As String = tvApiBaseUrl & "/api/" & apiVersion & "/devices/" & device_id
Dim result As String
Dim alias_str_ As String = Chr(34) & alias_str & Chr(34)
Try
Dim request As HttpWebRequest = TryCast(WebRequest.Create(address), HttpWebRequest)
request.Headers.Add("Authorization", "Bearer " & accessToken)
request.Method = "PUT"
request.ContentType = "application/json"
Using requestWriter2 As New StreamWriter(request.GetRequestStream())
requestWriter2.Write("{""Alias"" : " & alias_str_ & "}")
End Using
Dim webResp As WebResponse = request.GetResponse()
Using reader = New StreamReader(webResp.GetResponseStream)
result = reader.ReadToEnd()
End Using
TextBox1.Text = (result)
Catch __unusedException1__ As Exception
MsgBox(__unusedException1__.ToString)
End Try
End Sub