VB.Net CALL rest API using request.AddBody

How do I add body parameters to a rest API request in <a href="https://hkrtrainings.com/vb-net-training"></a>VB.Net using request.AddBody method ?

Below is my code in c#, but I want in VB.Net

 RestClient client = new RestClient("URL of API service");
 RestRequest request = new RestRequest("/MethodName", Method.POST);

request.AddHeader("Accept", "application/json");
request.RequestFormat = DataFormat.Json;
request.AddBody(new SampleClass 
                {
                    Property1 = Guid.NewGuid().ToString(),
                    Property2 = "",
                    Property3 = 123
                });

if (response.StatusCode == System.Net.HttpStatusCode.OK)
{
//Deserialize JSON content string to object
SampleResponse responseObj = JsonConvert.DeserializeObject(response.Content);

if (responseObj == null)
{
 throw new Exception("Error msg");
}

if (responseObj.ResultList != null)
 {
 rVal = responseObj.ResultList.ToList();
                      
}
else
{
throw new exception("Error in API");
}
}