如何使用wcf rest(starter kit)创建http post请求正文内容

我正在集成一个应用程序 ZenDesk . 他们有一个 REST API . 我需要在请求体中发送pox。我在用wcf rest启动套件。

如何以编程方式将XML添加到请求正文中?

这是我的单元测试:

        [Test]
        public void Can_create_user()
        {
            // Arrange
            http = new HttpClient("http://myapp.zendesk.com/");
            http.TransportSettings.Credentials = new NetworkCredential
                                               ("joe@admin.com", "passW0rd");
            http.DefaultHeaders.Accept.Add("application/xml");
            var form = new HttpUrlEncodedForm();
            var expectedStatusCode = 201;

            var request = new XDocument(
                new XElement("user",
                             new XElement("email", "joe@user.com"),
                             new XElement("name", "Joe User"),
                             new XElement("roles", "4"),
                             new XElement("restriction-id", "4")));

            form.Add("body", request.ToString());

            // Act
            var response = http.Post("users.xml", form.CreateHttpContent());
            var content = response.Content.ReadAsString();

            // Assert
            response.EnsureStatusIs(expectedStatusCode);