Resolved How to send request body using HTTPWebrequest

[Anonymous]

Hello Finally i found a post api which sends and receives data in XML format.

My API has a request body -

<Person>
<Id>12345</Id>
<Customer>John Smith</Customer>
<Quantity>1</Quantity>
<Price>10.00</Price>
</Person>

I am confused as how I should I hit the api with this body from the code -

I have created a proxy class for this one -

    [System.SerializableAttribute()]
    [System.ComponentModel.DesignerCategoryAttribute("code")]
    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
    [System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]
    public partial class Person
    {

        private ushort idField;

        private string customerField;

        private byte quantityField;

        private decimal priceField;

        /// <remarks/>
        public ushort Id
        {
            get
            {
                return this.idField;
            }
            set
            {
                this.idField = value;
            }
        }

        /// <remarks/>
        public string Customer
        {
            get
            {
                return this.customerField;
            }
            set
            {
                this.customerField = value;
            }
        }

        /// <remarks/>
        public byte Quantity
        {
            get
            {
                return this.quantityField;
            }
            set
            {
                this.quantityField = value;
            }
        }

        /// <remarks/>
        public decimal Price
        {
            get
            {
                return this.priceField;
            }
            set
            {
                this.priceField = value;
            }
        }
    }

The is the code I am writing for hitting the API -

var request = (HttpWebRequest)WebRequest.Create("https://reqbin.com/sample/post/xml");



            Person person = new Person();

         

            Console.WriteLine("Enter ID");

            person.Id = Convert.ToUInt16(Console.ReadLine());



            Console.WriteLine("Enter Name");

            person.Customer = Console.ReadLine();



            Console.WriteLine("Enter Quantity");

            person.Quantity = Convert.ToByte(Console.ReadLine());



            Console.WriteLine("Enter Price");

            person.Price = Convert.ToDecimal(Console.ReadLine());



       

            var data = Encoding.ASCII.GetBytes(person); ----- I am not sure about this one.

How do I proceed ?

 

[Skydiver]

Serialize your Person object into an XML string. Send that string as the request body.

Why did you abandon the idea of using an HttpClient from your previous threads?

 

[Anonymous]

Serialize your Person object into an XML string. Send that string as the request body.

Why did you abandon the idea of using an HttpClient from your previous threads?

I want to learn both. I am first trying it with HttpWebRequest then I will try with HttpClient.

I serialized the object but now I am getting

System.Net.ProtocolViolationException:
You must provide a request body if you set ContentLength>0 or SendChunked==true.
Do this by calling [Begin]GetRequestStream before [Begin]GetResponse.

I did the following -

    // Serialize the person into an XML string
            var serializer = new XmlSerializer(typeof(Person));
            var sb = new StringBuilder();
            using (XmlWriter xmlWriter = XmlWriter.Create(sb))
            {
                serializer.Serialize(xmlWriter, person);
            }

            // Byte array data to send
            var data = Encoding.ASCII.GetBytes(sb.ToString());


            request.Method = "POST";
            request.ContentType = "application/xml";
            request.ContentLength = data.Length;

            var response = (HttpWebResponse)request.GetResponse();

            var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();

            Console.WriteLine(responseString);

            XmlSerializer deserializer = new XmlSerializer(typeof(Response));

            Response result = new Response();

            using (TextReader reader = new StringReader(responseString))
            {
                result = (Response)serializer.Deserialize(reader);
            }

            //Console.WriteLine(name);

            Console.WriteLine("Finally we received " + result.ResponseMessage);



            response.Close();

 

[JohnH]

As it says, call GetRequestStream before GetResponse. Copy the post data to the the request stream.

 

[Anonymous]

As it says, call GetRequestStream before GetResponse. Copy the post data to the the request stream.

But im doing all the request stuff before the response stuff ? What exactly i have to do before the response?

 

[JohnH]

You have to get the request stream and copy your post data to it.

 

[Skydiver]

The error was telling you exactly what you needed to do. If you checked the documentation for the GetRequestStream() method, it even has sample code.

 

[Anonymous]

The error was telling you exactly what you needed to do. If you checked the documentation for the GetRequestStream() method, it even has sample code.

Thanks it works now but I am getting a System.NotSupportedException for Length and Position. Its not that its stopping my application . My application is working but I saw it while debugging.

 

[Skydiver]

Yes, that is normal for some of the debugging visualizers. Some streams are write only, and so some properties are not supported for such streams.