C#使用TcpClient請求Api

TcpClient client = new TcpClient();
                String hostName = "192.168.1.159";//主機名稱|域名
                int portNumber = 8002;//端口號


                client.Connect(hostName, portNumber);//建立連接
                NetworkStream clientStream = client.GetStream();
                StreamWriter writeStream = new StreamWriter(clientStream);
                writeStream.Write("POST /api/Product/AddProduct HTTP/1.1\r\n"  //http請求內容
+"User-Agent: Fiddler\r\n"
+ "Host: 192.168.1.159:8002\r\n"
+ "Content-Length: 1107\r\n"
+ "Content-Type: application/json\r\n"
+ "\r\n"
+ "{"
+"\"P_Code\":\"\","
+"\"P_ImgUrl\":\"www.baidu.com\","
+"\"P_VideoUrl\":\"www.baidu.com\","
+"\"P_Title\":\"測試\","
+"\"P_TypeCode\":\"20181515212\","
+"\"P_Brand\":\"測試品牌\""
+"        }");
                writeStream.Flush();
                String text = "";
                byte[] buffer = new byte[1024];
                while (clientStream.Read(buffer,0,1024)>0)
                {
                    text += Encoding.UTF8.GetString(buffer);

                }

//text爲接口返回的Response數據