Error "Cannot send a content-body with this Verb-type"

Question

Guys, I’m having trouble with the mistake "Cannot send a content-body with this Verb-type.". I’ve changed the method to POST, but the API only accepts if the given method is GET.

I’ve tried to send the body as header, and the API also does not accept.

When searching vi that for Webrequest it is not possible to send a body via the method GET. Can you help me? Below is the code I’m using in Visual Basic.

Dim request As HttpWebRequest = HttpWebRequest.Create(URL)

System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12

request.Headers.Add("Authorization", "Bearer " + base64)
request.Method = "GET"
request.ContentType = "application/json"

Dim httpRequest As HttpWebRequest = TryCast(request, HttpWebRequest)

If Not String.IsNullOrEmpty(body) Then
  Dim requestStream As IO.Stream = request.GetRequestStream()
  Using sw As New IO.StreamWriter(requestStream, New Text.UTF8Encoding(False))
    sw.Write(body)
  End Using
End If

Using response As WebResponse = request.GetResponse()
  Dim responseStream As IO.Stream = response.GetResponseStream()
  Dim sr As New IO.StreamReader(responseStream)
  resultData = sr.ReadToEnd()
End Using