title: How add the POST data in the json request body of REST services Using C#
body: <pre><code>private void CreateNewTasklist(string TasklistTitleValue)
      {
          AuthenticationProcess objUri = new AuthenticationProcess();
  
          if (string.IsNullOrEmpty(TasklistTitleValue))
          {
              MessageBox.Show("Please Enter the Tasklist Title.");
          }
          else
          {
              //Read the Token result in Isolated storage.
              string TokenResult = TasklistManager.ReadTokenResult();
              var Token = Auth.ParseAuthJsonString(TokenResult);
  
              var request = new RestRequest(objUri.CreateTasklist, Method.POST);
              request.AddHeader("content-type", "application/json");
  
  
  
  
  
              RestClient client = new RestClient("https://www.googleapis.com");
              client.Authenticator = new OAuth2AuthorizationRequestHeaderAuthenticator(Token.access_token);
              client.ExecuteAsync&lt;TasklistManager&gt;(request, TaskListsLoaded);
          }
      }
  </code></pre>
  
  <p>Here I get string TasklistTitleValue value .. i want to POST it. How to add it to request body as content-type is application/json. </p>